CN102277819A - Ground temperature-regulating and snow-melting device by using natural terrestrial heat and application thereof - Google Patents
Ground temperature-regulating and snow-melting device by using natural terrestrial heat and application thereof Download PDFInfo
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- CN102277819A CN102277819A CN2010102007469A CN201010200746A CN102277819A CN 102277819 A CN102277819 A CN 102277819A CN 2010102007469 A CN2010102007469 A CN 2010102007469A CN 201010200746 A CN201010200746 A CN 201010200746A CN 102277819 A CN102277819 A CN 102277819A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/40—Geothermal collectors operated without external energy sources, e.g. using thermosiphonic circulation or heat pipes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention discloses a ground temperature-regulating and snow-melting device by using natural terrestrial heat and application thereof, belonging to a terrestrial heat utilizing system and particularly relating to a snow melting device for removing snow and ice. The ground temperature-regulating and snow-melting device comprises a heat collecting part and a heat radiating part, wherein the heat collecting part is communicated with the heat radiating part through an output pipe and a reflow pipe to form a hermetic loop. The ground temperature-regulating and snow-melting device is characterized in that a loop is filled with a work medium with low boiling point; the heat radiating part comprises at least one heat radiating pipe and one current collecting pipe; the heat radiating pipe is connected with the current collecting pipe through a return part; the current collecting pipe is positioned under the heat radiating pipe; two ends of the heat radiating pipe are respectively communicated with the output pipe and the return part; two ends of the current collecting pipe are respectively communicated with the return part and the upper end of the reflow pipe; and the current collecting pipe downwards continuously inclines towards the direction of the reflow pipe from the return part, wherein the inclination of the current collecting pipe is smaller than 1:10. According to the ground temperature-regulating and snow-melting device disclosed by the invention, underground heat energy is absorbed by using heat media with low boiling point in a heat collector; the heat is directly transmitted to a heat radiator arranged on the ground or under the pavement by using the heat media subjected to heat absorption and gasification so as to prevent frost and snow on the ground or pavement from being reserved or melt the frost and snow; and no extra energy source is consumed, economy and environment friendliness are achieved and the smoothness of road can be ensured.
Description
Technical field
The invention belongs to a kind of geothermal utilization system, relate in particular to a kind of ground temperature adjustment device for melting snow that utilizes natural underground heat energy to remove snow and ice.
Background technology
In recent years, along with the high speed development of China's economic, the input of country in infrastructure construction continues to increase, and completes for use in succession in many expressways, speedway and airport, provides great convenience quick for people's productive life and trip.But at the winter-spring season of some northern area, because snowfall is frequent, and day and night temperature is big, easily forms accumulated snow or freezing phenomenon on the road surface, has a strong impact on the driving safety of vehicle or aircraft, causes great potential safety hazard.In the past for road table accumulated snow, mainly be to utilize artificial or snow removing vehicle carries out snow-removing operation or salting, not only expend lot of manpower and material resources, the vehicle fuel emission also forms environment and pollutes, the more important thing is that these conventional method efficient are lower, the energy consumption height needs the long time usually, cause traffic jam easily, the speedway sealing, socked-in, railway is stopped transport, delay people's normal trip, cause the tremendous economic loss.On March 23rd, 2005, the disclosed patent No. was 03120732.4 Chinese patent, a kind of ground temperature adjustment device for melting snow that utilizes underground heat is provided, by vertically being embedded in underground heating device, and the non freezing solution that circulation is supplied with between heat interchanger is gathered underground heat, the underground heat that collects, transfer to by heat interchanger on the secondary non freezing solution between the heat release pipe that circulates in this heat interchanger and be layed in the snow melt place, discharge the device that this heat energy melts accumulated snow in the snow melt place.Between heating device and heat interchanger, be provided with toward road and loop in order to make a non freezing solution circulation, be that a non freezing solution circulation is provided with circulation pump on this loop.This technical scheme is utilized underground heat melting road surface accumulated snow at any time, and operating efficiency improves.But, because this technical scheme uses non freezing solution as heat-exchange medium,,, make system can't realize normal heat circulation with blocking pipeline once non freezing solution generation sex change freezes, therefore necessary periodic replacement non freezing solution, expense is higher.And this technical scheme also utilizes heat exchange device to carry out exchange heat one time halfway, and this process produces thermal loss inevitably, reduces the utilization rate of geothermal energy.In addition, circulation pump is set in pipeline, the consumption that has strengthened the energy has also brought new pollution on the other hand on the one hand.Therefore, no matter this technical scheme is still considered from environmental angle from economic angle, all exists some significantly not enough.
In addition, need utilize winter native heating installation fire coal to light a fire when the green house of vegetables temperature is low and improve ground temperature canopy temperature, waste energy, increase discharging.The orchard living cigarette of need lighting a fire when cold current comes prevents frost, and grassland, ground heavy snow in winter such as Inner Mongol, Xinjiang cover the grassland, and cattle and sheep are gone to sleep nowhere and hide oneself, and cause a large amount of cattle and sheep to freeze to death.These all need a kind of economy to make things convenient for the temperature adjustment measure of environmental protection.
Summary of the invention
One of purpose of the present invention is to overcome above-mentioned defective, a kind of geothermal utilization rate height, no any pollution is provided and need not the ground temperature adjustment device for melting snow that utilizes natural underground heat of other energy of additive decrementation.
The present invention realizes like this, comprise thermal-arrest portion and radiating part, radiating part is higher than thermal-arrest portion, thermal-arrest portion is connected with radiating part by efferent duct and return duct, form airtight loop, it is characterized in that being equipped with in the loop low boiling working fluid as heat-transfer working medium, radiating part is made up of at least one radiating tube and a header, radiating tube links to each other through the portion of returning with header, header is positioned at the radiating tube below, and the radiating tube two ends are connected with the efferent duct and the portion of returning respectively, and the header two ends are connected respectively with on returning portion and return duct, header is directed downwards continuous tilt from returning portion to return duct, and its gradient was less than 1: 10.
Described low boiling working fluid is meant and is at normal temperatures can change liquid working medium into when being lower than its boiling point, as liquefied ammonia, freon or its environment-friend substitution product by gaseous state.In actual applications, can select for use the material of different boiling as heat-transfer working medium according to the temperature characteristics in area.One, the boiling point of selected low boiling working fluid should not be higher than-10 ℃.
In order to realize the smooth circulation of heat-transfer working medium material in the loop, can utilize at least one afflux arm thinner to keep being communicated with between the radiating tube of radiating part and the header than header.In addition, can also adopt radiating tube to be directed downwards the technical scheme of continuous tilt from junction surface to the portion of returning of efferent duct and radiating tube, according to practical engineering experience, one situation has a down dip gradient less than 4: 100.In order to improve the radiating efficiency of radiating part, radiating part can comprise the radiating tube that is arranged in parallel in the horizontal direction more than two or two, the two ends of radiating tube are connected by connecting pipe respectively, the connecting pipe of radiating tube arrival end is connected with efferent duct, and the connecting pipe of the radiating tube port of export is connected with header through returning portion.In addition, fin can also be set on the radiating tube of radiating part and further improve heat-sinking capability.Because low boiling working fluid volume after radiating tube heat radiation condensation significantly reduces, therefore also can be corresponding two or two above radiating tubes a header is set, header can be thinner during the corresponding header of radiating tube.
For the ease of in the loop, adding low boiling working fluid at any time, the perfusing hole and the corresponding perfusion switch valve of low boiling working fluid is set in the loop.In addition, in order to discharge the gaseous impurity of sneaking into the loop with low boiling working fluid at any time, exhaust opening and corresponding exhaust switch valve can also be set in the loop.
The form of thermal-arrest portion can be varied among the present invention, and as required, thermal-arrest portion can be a U-shaped pipe, and the two ends of U-shaped pipe link to each other with return duct with efferent duct respectively; Thermal-arrest portion also can be a blind pipe, and the lower end of efferent duct is positioned at the blind pipe top, and the return duct lower end is positioned at the blind pipe bottom.
In order to reduce the thermal loss in the cyclic process, can in the loop, take some insulation measures, for example, to small part efferent duct and return duct, insulation layer etc. is being set.
The consideration of safeguarding for convenience and controlling, at efferent duct or/and switch valve is set on the return duct.Described switch valve can also be provided with remote control with convenient management.
The present invention utilizes the ground temperature adjustment device for melting snow of natural underground heat, utilize the low boiling working fluid in the thermal-arrest portion to absorb underground heat energy as heat-transfer working medium, carburation by evaporation, take away a large amount of latent heat, working substance steam mainly rises in the radiating part that is arranged in ground or the road surface along efferent duct, meets condensation and becomes liquid state, discharges a large amount of latent heats of condensation, liquid refrigerant finally is back to heat collector along return duct through the header guiding, realizes interchange of heat circulation.By constantly repeating above-mentioned thermal cycle process automatically, need not any electric power or fuel, just underground heat can be transported to continuously the face of land or road surface near the radiating part, the temperature maintenance on the face of land above zero, is played and prevents to retain frost and snow on ground or the road surface, prevents the effect of freezing or melting frost and snow.Because do not have secondary heat exchange in entire work process, so system architecture is simpler, the geothermal utilization rate is higher, thermal loss is few in the transport process.Again because the present invention does not relate to any auxiliary power unit in the course of the work, the therefore additive decrementation energy not, i.e. environmental protection is economical again.In addition, the present invention utilizes the carrier of low-boiling heat-transfer working medium as exchange heat, no converting member, maintenance realizes easily, when having avoided using in the conventional art non freezing solution to transmit carrier as heat, easy frozen plug pipeline after the non freezing solution sex change, cleaning maintenance difficult, easily cause environment pollution after the seepage, frequently change upkeep cost than problems such as height.
In addition, in order to make full use of radiating part, as a kind of special case, can also set up cooling end in the present invention, the position of cooling end is higher than radiating part, and be interconnected with radiating part, cooling end is made up of at least one cooling tube that has fin, and switch valve is set respectively on the connecting line between cooling end and radiating tube and the header.The present invention of this structure utilizes the ground temperature adjustment device for melting snow of natural underground heat can also be embodied as the effect of road cooling.Its principle is: overheated season on the road surface, switch valve between radiating part and the thermal-arrest portion all cuts out, open the switch valve on the connecting line between cooling end and radiating tube and the header, like this, form independently loop between cooling end and the radiating part, in radiating part, pour into low boiling working fluid, make it to be full of radiating part.Road surface is after reasons such as solar radiation heat up, and the low boiling working fluid in the radiating part is subjected to thermal evaporation to enter cooling end, and cooling end flow back into after the low boiling working fluid condensation in the radiating part after externally dispelling the heat again, realizes interchange of heat circulation.By constantly repeating above-mentioned thermal cycle process automatically, just can reduce the face of land or pavement temperature, play the overheated effect in ground or road surface that prevents.
Second purpose of the present invention is to provide a kind of above-mentioned temperature adjustment earth construction that utilizes the ground temperature adjustment device for melting snow of natural underground heat of using, it is characterized in that the described bearing of trend platoon setting that utilizes the ground temperature adjustment device for melting snow of natural underground heat along road, the radiating part of ground temperature adjustment device for melting snow places below ground, thermal-arrest portion is arranged in the geothermal well of both sides, temperature adjustment ground or below setting, the degree of depth of thermal-arrest portion in geothermal well reaches the geological stratification that ground temperature is not less than 10 ℃ throughout the year at least, geothermal well top is provided with active well, the efferent duct of connection radiating part and thermal-arrest portion and return duct and respective switch valve are located in the active well, and the upper port of active well is provided with well lid.
Studies show that arriving certain depth downwards from the face of land is exactly thermostat layer, its temperature changes with regard to the variation that is not subjected to extraneous four seasons temperature.The degree of depth that arrives thermostat layer varies in different localities, and one is for the most of area of northern China, and initial about underground 10-15 rice greatly, ground temperature just can remain on more than 14 ℃ throughout the year, and in certain depth, 100 meters of every intensifications, ground temperature increases about 3 ℃.For China northeast, the temperature of thermostat layer will be hanged down relatively, and for example document shows that the thermostat layer temperature of Daqing Area has only 2 ℃.The shallow earth that thermal-arrest portion gathers can be usually located at the following 10-200 rice of epigeosphere alternating temperature band with in the interior soil or basement rock; its heat energy is mainly from the interior warm in earth deep; innumerable; nexhaustible; very environmental protection, for these reasons, the depth of burying of thermal-arrest portion upper edge is generally below ground below 10 meters; the thermal-arrest minister degree of imbedding is directly proportional according to pairing ground heating surface (area) (HS and the face of land is directly proportional with the ground temperature temperature difference.As long as can reach the ground temperature of requirement of the present invention around the thermal-arrest portion, and the thermal-arrest minister degree of imbedding is enough, just can guarantee the operate as normal of apparatus of the present invention.
For farthest bringing into play temperature adjustment and snow melt effect, the time spent can valve-off at ordinary times, prevents that underground heat inaction ground scatters and disappears; When snowing preceding or icing, frost tendency is arranged, in time open valve.For preventing that heat scatters and disappears to the top layer ground, can also be in the temperature adjustment earth construction insulation layer be set below the radiating tube of corresponding radiating part.In addition, for the ease of management and operation, the remote control of the switch valve in one or more active wells can link.It is to be noted, earth construction of the present invention not only refers to avenue, road surface, sub-district, fabrication facility floor, sports field, common road or speedway, also comprises concrete forms such as airfield runway, railway ballast, green house of vegetables soil, fruit tree surrounding soil, ground, pasture, grassland.
Earth construction of the present invention is owing to used the ground temperature adjustment device for melting snow that utilizes natural underground heat, can regulate surface temperature, surface temperature is higher than above zero all the time, snowflake be landed promptly change, ponding flows away or evaporates to do and disappears, and prevents that effectively the road surface from retaining the traffic safety hidden danger that ice and snow brings.Particularly grow or more remote road for mileage, can alleviate greatly because of the bust frost and snow can't be with the smooth phenomenon of the road that artificial cleaning in time causes, ensure carrying out smoothly of communications and transportation, the massive losses of thoroughly avoiding speedway sealing behind the northern heavy snow, socked-in etc. that national economy is caused.Can keep not accumulated snow of railway roadbed for railway, not freeze, if high-power intensive layout can also be melted the accumulated snow on rail and the track switch, the railway of avoiding railway accumulated snow or track switch freezing to cause interrupts.Because apparatus of the present invention do not need outside power, no commodity energy consumption does not have discharging, and the maintaining workload is little, therefore very practical and very environmental protection.
For green house of vegetables and fruit tree, utilize the present invention to heat soil with underground heat, improve the gentle canopy temperature in ground, make the fruit and vegetables suitable growth phase longer, reply frost and cold current.For the domestic animals anti-snow, can temperature adjustment ground be set at cattle and sheep canopy underground, prevent that cattle and sheep from freezing to death.Or utilize the present invention to set up the open-air grassland of a slice temperature adjustment, when snowing heavily like this, grass can not covered by accumulated snow, can pasture for during the cattle and sheep snow disaster.Certainly this also needs the high-power intensive layout of temperature adjustment device for melting snow of the present invention, and thermal-arrest portion wants long enough, and well is enough close, and radiating tube is enough close.
The present invention utilizes the ground temperature adjustment device for melting snow of natural underground heat, pipeline structure is simple, construction costs is low, by special construction design of the present invention, under the minimum condition of radiating part design height, make working medium along the roughly unidirectional circulation of closed pipeline, guaranteed higher heat transfer efficiency, therefore geothermal utilization rate height, not only energy-conservation but also environmental protection simultaneously, no running gear, the later period maintenance upkeep cost is low, can be widely used in avenue, highway, speedway, airfield runway, the stadium, the ice-melt snow melt of railway ballast based on know-why of the present invention, can also be used for green house of vegetables with the present invention, the orchard, the face of land ice-melt snow melt and the ground insulating in places such as pasture.
Description of drawings
Fig. 1 is one of structural representation of the present invention.
Fig. 2 utilizes the application schematic diagram of the ground temperature adjustment device for melting snow of natural underground heat for the present invention shown in Figure 1.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is two of a structural representation of the present invention.
Fig. 5 utilizes the application schematic diagram of the ground temperature adjustment device for melting snow of natural underground heat for the present invention shown in Figure 4.
Fig. 6 is the B-B sectional view of Fig. 5.
Fig. 7 is three of a structural representation of the present invention.
Fig. 8 utilizes the application schematic diagram of the ground temperature adjustment device for melting snow of natural underground heat for the present invention shown in Figure 7.
Fig. 9 is four of a structural representation of the present invention.
Figure 10 is five of a structural representation of the present invention.
Figure 11 is six of a structural representation of the present invention.
Figure 12 utilizes the application schematic diagram of the ground temperature adjustment device for melting snow of natural underground heat for the present invention shown in Figure 11.
Figure 13 is seven of a structural representation of the present invention.
Figure 14 utilizes the application schematic diagram of the ground temperature adjustment device for melting snow of natural underground heat for the present invention shown in Figure 13.
The specific embodiment
Embodiment one
The present invention utilizes the ground temperature adjustment device for melting snow of natural underground heat as shown in Figure 1, comprise thermal-arrest portion 1, thermal-arrest portion 1 is a U-shaped pipe, and link to each other with radiating part 2 with return duct 7 by efferent duct 6, form airtight loop, low boiling working fluid is housed in the loop---liquefied ammonia (not specifically illustrating among the figure) is as heat-transfer working medium, and it is full of most of space of heat collector inside.Radiating part 2 is made up of a radiating tube 3 and a header 4, and radiating tube 3 is higher than header 4 and is interconnected by returning portion 5 with header, and the inlet that radiating tube 3 links to each other with efferent duct 6 in the radiating part 2 is higher than the outlet that header 4 links to each other with return duct 7.In order to realize the smooth circulation of heat-transfer working medium material in the loop, radiating tube 3 is directed downwards continuous tilt from inlet to returning portion 5, and header 4 is from returning portion to the downward continuous tilt of Way out, and in this example, the gradient of radiating tube and header is 3: 100.In order to prevent in the process that heat-transfer working medium rises that release heat is given surperficial ground too early in efferent duct 6, it is dirty to cause shifting to an earlier date condensation liquefaction, influence the realization of whole heat circulation, on efferent duct 6 surfaces insulation layer 12 is set, in view of this consideration, one, utilize in the ground temperature adjustment device for melting snow of natural underground heat in the present invention, efferent duct 6 surfaces must be incubated processing, except that insulation layer is set, also can directly select for use the tubing with heat preservation property as efferent duct.In addition,, switch valve 8 and switch valve 9 are set respectively on efferent duct 6 and return duct 7, can block whole thermal cycle process at any time by these two switch valves for the ease of control and maintenance, or control thermal cycle total amount.In addition, for the ease of in the loop, adding low boiling working fluid, the perfusing hole 10 and the corresponding perfusion switch valve 11 of low boiling working fluid is set on efferent duct top.For guaranteeing high conduction efficient, before the working medium perfusion, should with vacuum pump the air in the closed pipeline be vacuumized earlier.Certainly, perfusing hole 10 and perfusion switch valve 11 also can be arranged on other positions in the loop.
During application, as Fig. 2, highway shown in Figure 3, utilize the ground temperature adjustment device for melting snow of natural underground heat to prolong the staggered platoon setting in bearing of trend compartment of terrain of highway, the radiating part 2 of ground temperature adjustment device for melting snow is located in the concrete structure 16 of road use 14 belows, road surface, thermal-arrest portion 1 is embedded in the geothermal well 100 that is provided with on the sidewalk 13 of road both sides, the efferent duct 6 of connection radiating part 2 and thermal-arrest portion 1 and return duct 7 and respective switch valve are arranged in the active well 17 on geothermal well 100 tops, and the upper port of active well 17 is provided with well lid 15.Wherein, it is throughout the year constant in the geological stratification that is not less than 15 ℃ that the degree of depth of thermal-arrest portion 1 in geothermal well reaches ground temperature, and thermal-arrest portion is arranged in the soil between the underground 10-30 rice in this example, i.e. 20 meters of one-sided pipe ranges in the U type pipe.Utilize the design pitch between the ground temperature adjustment device for melting snow of natural underground heat to set, should not leave the dead angle according to the ground temperature adjustment area that the present invention who is adopted utilizes the ground temperature adjustment device for melting snow of natural underground heat to realize.
During use, close switch valve 8 and 9 summer, prevent the ground heat leakage, in winter,, prepare snow melt at snowfall first time front opening valve.Its snow melt course of work is to realize like this, because thermal-arrest portion 1 is buried in soil 20, thermal-arrest portion surrounding environment ground temperature is higher than 15 ℃ all the time, its inner low boiling working fluid evaporates after absorbing underground heat, steam enters radiating part 2 along efferent duct 6, liquefy after radiating tube 3 external heat releases, condensed liquid comes back to thermal-arrest portion through returning portion 5, header 4 and return duct 7, finishes heat exchange circulation.Special construction design of the present invention can be under the highly very low condition of radiating part global design, make working medium roughly unidirectional circulation in closed pipeline, rising vapours stream mainly walks in efferent duct and radiating tube, condensed fluid mainly walks in header and return duct, prevent the mutual convection current of vapours and condensed fluid, heat-shift each other in conduction way, so conduction efficiency height, the temperature difference of radiating part and thermal-arrest portion has only the several years.As long as the temperature around the thermal-arrest portion is higher than the boiling point of low boiling working fluid and the temperature around the radiating part, this circulation just can be kept, the underground heat of thermal-arrest portion outside is constantly passed around radiating part, so the surface temperature that can guarantee road surface 14 is higher than zero degree at least, and (one are about 3～5 °, apparent wind power is different with temperature), can melt automatically after falling to going up frost and snow, can not accumulate in a large number, and do not freeze all the time, ponding will flow away or evaporate disappearance.When safeguarding, only need open well lid 15, promptly can finish work such as adding low boiling working fluid or adjustment switch valve flow.For keeping heat, also can close switch valve 8 and 9 after the drying of road surface.
The present invention utilizes the ground temperature adjustment device for melting snow of natural underground heat, and its pipeline can use tubing such as steel pipe, PB pipe or PE pipe to constitute, and can realize good effect.Wherein carrier pipe and return duct can adopt the tubing that the lower material of thermal conductivity is made, so that insulation, but thermal-arrest portion tubing and radiating tube must use the high tubing of thermal conductivity to guarantee and can carry out exchange heat efficiently with the outside.The present invention utilizes the ground temperature adjustment device for melting snow of natural underground heat, utilize the low heat-transfer working medium of thermal-arrest portion mid-boiling point to absorb underground heat energy, heat-transfer working medium behind the endothermic gasification directly is sent to heat in the radiating part that is arranged at ground or below, road surface, heat-transfer working medium is finished in radiating tube and is become liquid state after heat discharges, finally be back to thermal-arrest portion through the header guiding, realize interchange of heat circulation along return duct.By constantly repeating above-mentioned thermal cycle process automatically, just can improve the face of land or pavement temperature, play the effect that prevents to retain frost and snow on ground or the road surface or melt frost and snow.Because do not have secondary heat exchange in entire work process, so system architecture is simpler, the geothermal utilization rate is higher, thermal loss is few in the transport process.Again because the present invention does not relate to any auxiliary power unit in the course of the work, the therefore additive decrementation energy not, i.e. environmental protection is economical again.In addition, the present invention utilizes the carrier of low-boiling heat-transfer working medium as exchange heat, need not conversion facility, maintenance realizes easily, when having avoided using in the conventional art non freezing solution to transmit carrier as heat, easy frozen plug pipeline after the non freezing solution sex change, cleaning maintenance difficult, easily produce and pollute, frequently change upkeep cost than problems such as height.And can realize unidirectional circulation basically.
Use the road structure of this ground temperature adjustment device for melting snow, can prevent effectively that the road surface from retaining the traffic safety hidden danger that ice and snow brings.Particularly grow or more remote road for mileage, can alleviate greatly because of the bust frost and snow can't ensure carrying out smoothly of communications and transportation with the artificial road closed phenomenon that causes of in time clearing up, it does not need outside power, the maintaining workload is little, very practical and very environmental protection.
It is pointed out that this example only is that example describes with the highway, in the practical application, based on know-why of the present invention, the concrete road structure of using can also be other road forms such as avenue, speedway, runway.Certainly the technology of the present invention equally also can be applied to the ice-melt snow melt and the ground insulating in large tracts of land places such as stadium, green house of vegetables, orchard and pasture, only need every being set, the present invention utilize the ground temperature adjustment device for melting snow of natural underground heat to get final product at above-mentioned intersite, with the applications similar in road structure, thermal-arrest portion is buried in underground, radiating part places the target floor below, its concrete degree of depth that is positioned at is below ground determined according to actual needs, when for example being applied to the pasture, radiating part top the thickness of the layer should satisfy the needs of tilth.When being applied to the orchard, radiating tube should be arranged in tree down.
In addition, in this example with thermal-arrest portion be embedded in the soil 30 meters dark be that example describes, in the practical application, also can be to be embedded in other geologic structures such as rock or sandstone.According to the difference of region, buried depth also can change to some extent in addition, so long as ground temperature is throughout the year constant in the geological stratification more than 10 ℃, can play good effect.For example, for the abundant area of some geothermal energy resources, possible below ground just can satisfy the application requirements of the present invention to ground temperature for 10 meters, and this situation is used the present invention and can be reduced cost greatly and difficulty of construction.Available low boiling working fluid can also be freon or its environment-friend substitution product, for example HFC-134a, R401A and R407C etc. except that the liquefied ammonia of mentioning.According to theory analysis and practical engineering experience, the gradient of header was less than 1: 10, and the radiating tube gradient was less than 4: 100.In this example, one-sided pipe range is 20 meters in the U type pipe of thermal-arrest portion, different according to concrete weather conditions of territory of use and temperature adjustment expection, thermal-arrest minister degree can be adjusted, its basic principle is that buried thermal-arrest minister degree is directly proportional with pairing ground heating surface (area) (HS, be directly proportional with the ground temperature temperature difference with the face of land, can calculate or determine the thermal-arrest minister degree and the buried depth of optimum in view of the above by theory by test well and trial zone.But under one situation, in order to ensure realize gathering enough underground heat energies, thermal-arrest portion is provided with length and should be no less than 5 meters.Above-mentioned explanation is applicable to all embodiment of the present invention.
Embodiment two
Utilize the ground temperature adjustment device for melting snow of natural underground heat as shown in Figure 4, be that with the difference of embodiment one condensed low boiling working fluids dispel the heat to shallow table ground in the return duct 7 in order to avoid, insulation layer 12 also is set on return duct 7 surfaces.In addition, in order to discharge the gaseous impurity of sneaking into the loop with low boiling working fluid at any time, exhaust opening 18 and exhaust switch valve 19 are set at the radiating tube end.In this example, the gradient of radiating tube and header was respectively 1: 100 and 2: 100, and the radiating part whole height is lower.
Use the road structure of the ground temperature adjustment device for melting snow of above-mentioned natural underground heat as shown in Figure 5 and Figure 6, be that with the difference of embodiment one it is specially the speedway of two-way lane.The bearing of trend platoon setting that utilizes the ground temperature adjustment device for melting snow of natural underground heat to prolong speedway, the radiating part 2 of ground temperature adjustment device for melting snow is arranged at road and uses in the concrete structure 16 of 14 belows, road surface, thermal-arrest portion 1 is embedded in the geothermal well 100 that is provided with on the bank protection 13 of road both sides, the efferent duct 6 of connection radiating part 2 and thermal-arrest portion 1 and return duct 7 and respective switch valve 8 and 9 are arranged in the active well 17 on geothermal well 100 tops, and the upper port of active well 17 is provided with well lid 15.This example is to be example in the abundant region of geothermal energy resources, and the thermal-arrest portion depth of burying is between the 10-50 rice, and ground temperature is not less than 20 ℃ throughout the year around it.For the ease of thermal-arrest portion 1 is put into geothermal well 100 smoothly, during construction, put into engineering plastics pipe 150 earlier after getting out geothermal well, prevent unfavorable phenomenons such as landslide, again thermal-arrest portion 1 is placed in the tube chamber of engineering plastics pipe 150, carry out backfill then, can effectively avoid heat unexpected lost like this.
In addition, inspection operation well 22 is set on the isolation strip between the two-way lane 21, exhaust opening 18 and exhaust opening switch valve 19 place inspection operation well 22, the present invention that below, two tracks is provided with respectively utilizes the shared inspection operation well 22 of ground temperature adjustment device for melting snow of natural underground heat, and inspection operation well 22 upper port are provided with well lid 23.Heat transmission loss around it too much for preventing that radiating tube 3 from transmitting is provided with insulation layer 170 below the radiating tube 3 of corresponding radiating part in the concrete structure of road, so just can guarantee that the heat that radiating tube distributes mainly transmits radiation to the road surface direction.It is pointed out that described insulation layer not only is provided with below radiating tube, its size should be corresponding with the zone, whole road surface of radiating tube radiation, or even be provided with continuously in road concrete structure 16 along road direction.
Owing to below radiating tube, be provided with insulation layer, improved the geothermal utilization rate greatly, so the ice-melt snow melt efficient of this routine described technical scheme be better.The benefit of this structure is to be convenient to thermal-arrest portion is arranged at deep under ground, and the construction facility that is easy to the deep-well pipe laying is arranged, and can realize that length apart from the heat transmission, is not influenced by transmission direction simultaneously.
Studies show that, arrive certain depth (formation temperature is constant) from the face of land downwards, its temperature is with regard to the variation that is not subjected to outside air temperature and change.The degree of depth that arrives thermostat layer varies in different localities, and one is about underground 10～15m.The shallow earth that the present invention uses can be usually located at the following 10-200 rice of epigeosphere alternating temperature band with in interior the Quaternary system soil or basement rock, and its heat energy is mainly from the interior warm in earth deep.This example is selected in the abundant area of geothermal energy resources, only is 50 meters and just can guarantees that ground temperature is not less than 20 ℃ that certainly, according to region difference and actual requirement of engineering, thermal-arrest portion can select with the interior degree of depth at 215 meters so the degree of depth is set.As long as can reach the 10 ℃ of ground temperature that are not less than of requirement of the present invention around the thermal-arrest portion, can guarantee that operate as normal of the present invention carries out.
In same place, though it is dark more that thermal-arrest portion buries underground below epigeosphere alternating temperature band, its surrounding environment ground temperature is just high more, snow melt effect in ground is also good more, but because thermal-arrest portion buries underground dark more, its corresponding connecting line is also long more, the all corresponding raising of cost of goods manufactured and construction cost, therefore should carry out designing and calculating according to the local climate situation in actual applications, or determine by test well and experimental plot, determining the best depth of burying and the length of thermal-arrest portion, and with the thermal power coupling of radiating tube.
Embodiment three
The present invention utilizes the ground temperature adjustment device for melting snow of natural underground heat as shown in Figure 7, is that with the difference of embodiment one thermal-arrest portion 1 is a blind pipe, is provided with low boiling working fluid 25 in the blind pipe, and efferent duct 6 openings are positioned at the blind pipe top, and return duct 7 lower ends are positioned at the blind pipe bottom.In order to improve radiating efficiency, comprise the many radiating tubes that are arranged in parallel 3 in the radiating part, the two ends of radiating tube 3 are connected by connecting pipe 26 respectively, and connecting pipe 26 is communicated with header 4 by returning portion 5 again.Unexpected heat exchange between unexpected lost and efferent duct and the return duct of avoiding heat all is provided with insulation layer 12 outside efferent duct 6 and return duct 7.In addition, for the ease of in the loop, adding low boiling working fluid, the perfusing hole 10 and the corresponding perfusion switch valve 11 of low boiling working fluid is set on connecting pipe 26.When radiating part comprised many radiating tubes, radiating tube spacing each other should be set according to the ground temperature adjustment area that single radiating tube is enough realized, should not leave the dead angle.
Compare with previous embodiment, low boiling working fluid in the thermal-arrest portion 1 evaporates from heat absorption back, the external world by tube wall, steam rises along efferent duct 3, enter radiating part 2, and after extraneous heat release, condense by radiating tube 3, condensed liquid reenters blind pipe bottom centre of thermal-arrest portion by returning portion 5, header 4 and return duct 7, so finishes the heat exchange circulation.
The special construction of present embodiment can make working medium unidirectional circle transmission in the loop, the steam that rises and the condensation working medium of decline walk in respectively in efferent duct 6 and the return duct 7, do not obstruct mutually, not heat exchange mutually, the loop direction of working medium is with upwards heat transfer and the cold loop direction of downward biography are consistent, unidirectional circulation is clearer and more definite, and heat conduction efficiency is higher.
Similar to embodiment one, during use, thermal-arrest portion 1 vertically is embedded in underground, the radiating part of roof shape is embedded in the layer of concrete of road, links to each other with return duct 7 by efferent duct 6 between thermal-arrest portion and the radiating part.The underground heat energy that thermal-arrest portion 1 collects makes the low boiling working fluid 25 heat absorption evaporations that are provided with in the thermal-arrest portion, vapours enters in the radiating part through efferent duct 6, through radiating tube 3 regelation that after outside heat radiation, is cooled, condensed liquid reenters thermal-arrest portion 1 by returning portion 5, header 4 and return duct 7, so finishes the heat exchange circulation.As long as the external temperature of thermal-arrest portion 1 is higher than the external temperature of radiating part, above-mentioned heat circulation can be kept, and with the outside of not dig of underground heat to radiating part, so just can guarantee that snow or the frost on the road surface constantly melted, and can not produce to accumulate.Because radiating part comprises many radiating tubes in this routine described ground temperature adjustment device for melting snow, radiating efficiency is higher, and its area coverage is big in use, and usage quantity is few, and therefore for the ice-melt snow melt of large area regions such as airport, effect is better.When being applied to concrete form and being the road structure of the present invention of airfield runway, as shown in Figure 8, because airfield runway 101 broads, and be that the circulation of assurance heat is carried out smoothly, it is long that radiating tube should not be provided with, and therefore the present invention can be utilized the ground temperature adjustment device for melting snow of natural underground heat to be set up in parallel at the runway width.Wherein, efferent duct and return duct all are arranged in the active well 100, and in the buried geothermal well below active well of thermal-arrest portion, the depth of burying is positioned at underground 10～120 meters, because arrangement is similar to embodiment one or embodiment two, this not other cross section view describe.In this example, radiating part is wide 20 meters, 5 meters of half side heat radiation pipe ranges, and spacing is 0.4 meter, 0.1 meter of highest point buried depth, gradient is 3: 1000, header gradient 1: 100.
It is pointed out that the well lid of active well is arranged to built-in in order to prevent accident, keep highly consistent with the runway road surface.When face of land temperature is higher when not needing snow melt, or when only the part highway section needs snow melt, can utilizes and adjust that switch valve 8 and 9 cuts out ground temperature adjustment device for melting snow or part is closed ground temperature adjustment device for melting snow.Only to utilize the ground temperature adjustment device for melting snow of natural underground heat be that example describes to be set up in parallel two groups of the present invention among Fig. 8, in actual applications, according to the developed width on road surface, also can be set up in parallel three groups, four groups even more.
Compare with the thermal-arrest portion of U-shaped tubular structure, when construction, the thermal-arrest portion of dead-pipe type described in this example is thinner than the required geothermal well size of the thermal-arrest portion of U-shaped tubular type, is easier to constructing operation.This routine described technical scheme, because thermal-arrest portion has adopted the blind pipe structure, more compact structure, it is buried to be very suitable for punching, and construction is convenient, need not backfill substantially, and engineering quantity is little, good economy performance.
Efferent duct and return duct surface are provided with insulation layer substantially all in this example, based on the degree of depth of thermostat layer one in underground theory below 10～15 meters, can only below the face of land, to efferent duct and return duct surface insulation layer be set in the scope about 10 meters, the part that is deeper than 10 meters no longer is provided with insulation layer, reduces cost with this.
Embodiment four
The present invention utilizes the ground temperature adjustment device for melting snow of natural underground heat as shown in Figure 9, be with the difference of embodiment three, for improving utilization ratio, the thermal-arrest portion 30 of another group ground temperature adjustment device for melting snow is set in the blind pipe of thermal-arrest portion 1, thermal-arrest portion 30 is a U-shaped pipe, be provided with low boiling working fluid (not specifically illustrating) in the U-shaped pipe, the two ends of U-shaped pipe link to each other with return duct 7 with efferent duct 6 respectively, and efferent duct 6 and return duct 7 surfaces all are provided with insulation layer 12.In addition, on the radiating tube 3 of radiating part fin 27 is set and further improves heat-sinking capability.Corresponding many radiating tubes 3 are provided with a header 4, for ease of water conservancy diversion, a plurality of portions 5 that return are set, and link to each other with header 4 by connecting pipe 26.In addition,, can utilize network technology, utilize that computer system 31 is long-range to be controlled switch valve 8 and switch valve 9 for ease of control.Certainly according to this principle, use the road structure of the ground temperature adjustment device for melting snow of a plurality of the described natural underground heat of example and can also realize a plurality of the present invention are utilized the interlock control of the ground temperature adjustment device for melting snow of natural underground heat, even the work that the external temperature sensing device carries out Based Intelligent Control ground temperature adjustment device for melting snow can be set.Utilize this control mode can realize at an easy rate can saving the Artificial Control cost greatly to adjustment at any time arbitrary or several ground temperature adjustment device for melting snow, convenient efficient.Similar when it specifically is applied to road structure to embodiment three, at this no longer other description of drawings.
In this example, owing to set up fin on radiating tube, area of dissipation significantly improves, so radiating efficiency is improved, and snow melt ice-melt performance significantly promotes.
Embodiment five
The present invention utilizes the ground temperature adjustment device for melting snow of natural underground heat as shown in figure 10, be with the difference of embodiment two, radiating part a side (roadside or intermediate isolating band) top cooling end 200 is set, the position of cooling end 200 is higher than radiating part 2, cooling end is made up of the many cooling tubes that have fin, cooling end is communicated with by tedge and down-comer with radiating part, wherein radiating tube is communicated with by tedge with the cooling end upper end, header is communicated with by down-comer with the cooling end lower end, on the connecting line between cooling end 200 and efferent duct 6 and the header 4 switch valve 202 and 201 is set respectively.During application, basic identical with embodiment two, thermal-arrest portion is embedded in underground, and cooling end is placed on the ground, is exposed among the air, at this description of drawings no longer in addition.When being used for snow melt, switch valve 202 and 201 cuts out, open switch valve 8 and 9, its thermal cycle process and embodiment two are identical.In addition, the present invention of this structure utilizes the ground temperature adjustment device for melting snow of natural underground heat can also be embodied as the effect of road cooling.When being applied to lower the temperature, switch valve 8 and 9 between radiating part and the thermal-arrest portion all cuts out, open the switch valve 201 and 202 on the connecting line between cooling end 200 and radiating tube 3 and the header 4, like this, form independently loop between cooling end 200 and the radiating part 2, in radiating part, pour into low boiling working fluid, make it to be full of radiating part.Road surface is after reasons such as solar radiation heat up, and the heat-transfer working medium in the radiating part is subjected to thermal evaporation to enter cooling end, and after cooling end externally dispelled the heat, the heat-transfer working medium condensation returned in the radiating part, realizes interchange of heat circulation.By constantly repeating above-mentioned thermal cycle process automatically, just can reduce the face of land or pavement temperature, play the overheated effect in ground or road surface that prevents.
Working medium also roughly unidirectional circle transmission in the loop when special construction of present embodiment can make the road cooling, the steam that rises and the condensation working medium of decline walk in respectively in tedge 300 and the down-comer 301, do not obstruct mutually, not heat exchange mutually, the loop direction of working medium is with upwards heat transfer and the cold loop direction of downward biography are consistent, and heat conduction efficiency is higher.
Embodiment six
The present invention utilizes the ground temperature adjustment device for melting snow of natural underground heat as shown in figure 11, be with the difference of embodiment two, in order to realize the smooth circulation of heat-transfer working medium material in the loop, can utilize many to keep being communicated with between the radiating tube 3 of radiating part 2 and the header 4 than header 4 thinner afflux arms 160.Radiating tube is parallel with the face of land, aclinal.In addition, insulation layer 170 is arranged on the below of header 4.
Though radiating tube aclinal, can not stop up yet, because be provided with afflux arm 160, can flow in the header 4 along afflux arm 160 nearby after the heat-transfer working medium condensation in the radiating tube 3, and then gather through return duct 7 by header and to get back in the thermal-arrest portion 1, therefore the present invention of this structure utilizes the ground temperature adjustment device for melting snow efficiency of cycle of natural underground heat higher, radiating tube is parallel to ground and is easy to construction, it is very low that the global design of radiating part highly can be controlled, the snow melt better effects if, especially suitable airfield runway, the temperature adjustment ground that the square equidimension is bigger.
It is worthy of note that header also can be parallel to ground or adopt extremely low gradient in the present embodiment, for example 1: 1000, also impact effect not.Even because be full of condensed liquid refrigerant in the header, it is unimpeded that the liquid level discrepancy in elevation of afflux arm can guarantee that also header refluxes.Because the overall height of the radiating part of this structure is extremely low, can accomplish below 0.1 meter that therefore this structure can be used for the transformation to existing road surface, during transformation, earlier at the road surface cross drilling, for example aperture 120mm inserts radiating part in the transverse holes then, with other pipeline field Welding, pressure testing, vacuumize back perfusion low boiling working fluid, use then from the levelling non-shrinkage cement hole is tamped, solidifying the road surface, back can use.
As shown in figure 12, be with the difference of embodiment two, when being applied to Northeast Cold Area during application, the thermostat layer temperature is lower, and for gathering underground heat energy better, heat collector 1 is arranged at and reaches under the face of land in 25～150 meters dark geothermal wells 100, not backfill of geothermal well utilizes well water to conduct heat to thermal-arrest portion.In addition, only to carrier pipe 6 and return duct 7 surfaces in 25 meters scopes below the face of land insulation layer 12 is set on the face of land.
It is pointed out that according to this routine described thermal-arrest portion depth of burying, have underground water in the geothermal well, do not specifically illustrate in diagram, the underground water that may occur in also not to geothermal well in embodiment is before represented explanation hereby.
Embodiment seven
The present invention utilizes the ground temperature adjustment device for melting snow of natural underground heat as shown in figure 13, is with the difference of embodiment three, in order to adapt to the road surface broad, needs the long demand of radiating part length, and radiating tube 3 and thermal-collecting tube 4 are respectively only to the lopsidedness setting.Like this, under the identical respectively situation of the caliber of connecting pipe 26, radiating tube 3 and header 4, it is longer that radiating tube in this routine described structure and header can be provided with, and is applicable to more that therefore the temperature adjustment of broad earth constructions such as airfield runway is used.When being applied to runway, the mode platoon is arranged in the runway below as shown in figure 14.
Claims (17)
1. ground temperature adjustment device for melting snow that utilizes natural underground heat, comprise thermal-arrest portion and radiating part, radiating part is higher than thermal-arrest portion, thermal-arrest portion is connected with radiating part by efferent duct and return duct, form airtight loop, it is characterized in that being equipped with in the loop low boiling working fluid as heat-transfer working medium, radiating part is made up of at least one radiating tube and a header, radiating tube links to each other through the portion of returning with header, header is positioned at the radiating tube below, and the radiating tube two ends are connected with the efferent duct and the portion of returning respectively, and the header two ends are connected respectively with on returning portion and return duct, header is directed downwards continuous tilt from returning portion to return duct, and its gradient was less than 1: 10.
2. be communicated with by at least one afflux arm thinner between the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 1, the radiating tube that it is characterized in that radiating part and header than header.
3. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 1 is characterized in that radiating tube is directed downwards continuous tilt from junction surface to the portion of returning of efferent duct and radiating tube, and gradient was less than 4: 100.
4. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 1, it is characterized in that comprising in the radiating part radiating tube that is arranged in parallel in the horizontal direction more than two or two, the two ends of radiating tube are connected by connecting pipe respectively, the connecting pipe of radiating tube arrival end is connected with efferent duct, and the connecting pipe of the radiating tube port of export is connected with header through returning portion.
5. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 4 is characterized in that two of correspondences or two above radiating tubes are provided with a header.
6. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 1 is characterized in that thermal-arrest portion is a U-shaped pipe, and the two ends of U-shaped pipe link to each other with return duct with efferent duct respectively.
7. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 1 is characterized in that thermal-arrest portion is a blind pipe, and the efferent duct lower end is positioned at the blind pipe top, and the return duct lower end is positioned at the blind pipe bottom.
8. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 1 is characterized in that being provided with in the loop perfusing hole of low boiling working fluid and pours into switch valve.
9. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 1 is characterized in that being provided with in the loop exhaust opening and exhaust switch valve.
10. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 1 is characterized in that to small part efferent duct and return duct insulation layer being set.
11. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 1 is characterized in that efferent duct or/and switch valve is set on the return duct.
12. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 11 is characterized in that switch valve is provided with remote control.
13. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 1 is characterized in that the radiating tube of radiating part is provided with fin.
14. the ground temperature adjustment device for melting snow that utilizes natural underground heat according to claim 11, it is characterized in that also being provided with cooling end, the position of cooling end is higher than radiating part, cooling end and radiating part are interconnected, cooling end is made up of at least one cooling tube that has fin, and switch valve is set respectively on the connecting line between cooling end and radiating tube and the header.
15. an application rights requires the described temperature adjustment earth construction of arbitrary claim among the 1-14, it is characterized in that the described bearing of trend platoon setting that utilizes the ground temperature adjustment device for melting snow of natural underground heat along road, the radiating part of device for melting snow is positioned at below ground, thermal-arrest portion is arranged in the geothermal well that both sides, temperature adjustment ground or temperature adjustment are provided with below ground, the degree of depth of thermal-arrest portion in geothermal well reaches the geological stratification that ground temperature is not less than 10 ℃ throughout the year at least, geothermal well top is provided with active well, the efferent duct of connection radiating part and thermal-arrest portion and return duct and respective switch valve are located in the active well, and the upper port of active well is provided with well lid.
16. temperature adjustment earth construction according to claim 15 is characterized in that the radiating tube below of corresponding radiating part in the road structure is provided with insulation layer.
17. temperature adjustment earth construction according to claim 15 is characterized in that the remote control of the switch valve in one or more active wells can link.
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| CN102630468A (en) * | 2012-04-28 | 2012-08-15 | 北京工业大学 | Method for constructing turf bed by utilizing shallow geothermal energy |
| CN108317757A (en) * | 2018-02-08 | 2018-07-24 | 惠州市俊康电子科技有限公司 | A kind of geothermal industry processing unit (plant) |
| CN108716175A (en) * | 2018-06-21 | 2018-10-30 | 无锡市政设计研究院有限公司 | A kind of road snow-melting system |
| CN111426085A (en) * | 2020-05-13 | 2020-07-17 | 西南科技大学 | A vertical buried tube heat exchanger for preventing subgrade frost heave |
| CN111501476A (en) * | 2020-04-29 | 2020-08-07 | 四川省公路规划勘察设计研究院有限公司 | Asphalt pavement shallow layer snow melting and deicing system and method |
| CN114525709A (en) * | 2022-02-24 | 2022-05-24 | 湖南工程学院 | Device for melting snow by solar heat collection and storage and geothermal energy on road surface |
| CN114687315A (en) * | 2022-04-19 | 2022-07-01 | 玺大建设工程有限公司 | An unattended snow removal station for expressway interchange ramps |
| CN116806591A (en) * | 2023-07-12 | 2023-09-29 | 芜湖金伙伴农业科技有限公司 | Grape planting greenhouse with adjustable heat conduction efficiency |
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| JPH08284106A (en) * | 1995-04-19 | 1996-10-29 | Fujikura Ltd | Heat pipe type snow melting equipment |
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Cited By (12)
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|---|---|---|---|---|
| CN102630468A (en) * | 2012-04-28 | 2012-08-15 | 北京工业大学 | Method for constructing turf bed by utilizing shallow geothermal energy |
| CN108317757A (en) * | 2018-02-08 | 2018-07-24 | 惠州市俊康电子科技有限公司 | A kind of geothermal industry processing unit (plant) |
| CN108716175A (en) * | 2018-06-21 | 2018-10-30 | 无锡市政设计研究院有限公司 | A kind of road snow-melting system |
| CN111501476A (en) * | 2020-04-29 | 2020-08-07 | 四川省公路规划勘察设计研究院有限公司 | Asphalt pavement shallow layer snow melting and deicing system and method |
| CN111501476B (en) * | 2020-04-29 | 2021-12-07 | 四川省公路规划勘察设计研究院有限公司 | Asphalt pavement shallow layer snow melting and deicing system and method |
| CN111426085A (en) * | 2020-05-13 | 2020-07-17 | 西南科技大学 | A vertical buried tube heat exchanger for preventing subgrade frost heave |
| CN111426085B (en) * | 2020-05-13 | 2021-06-22 | 西南科技大学 | A vertical buried tube heat exchanger for preventing subgrade frost heave |
| CN114525709A (en) * | 2022-02-24 | 2022-05-24 | 湖南工程学院 | Device for melting snow by solar heat collection and storage and geothermal energy on road surface |
| CN114525709B (en) * | 2022-02-24 | 2024-05-17 | 湖南工程学院 | Device for road surface solar heat collection and energy storage and geothermal energy snow melting |
| CN114687315A (en) * | 2022-04-19 | 2022-07-01 | 玺大建设工程有限公司 | An unattended snow removal station for expressway interchange ramps |
| CN116806591A (en) * | 2023-07-12 | 2023-09-29 | 芜湖金伙伴农业科技有限公司 | Grape planting greenhouse with adjustable heat conduction efficiency |
| CN116806591B (en) * | 2023-07-12 | 2024-04-23 | 芜湖金伙伴农业科技有限公司 | Grape planting greenhouse with adjustable heat conduction efficiency |
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