WO2024008642A1 - Système de déshumidification de l'air au sein d'une structure de culture close et structure de culture close équipée d'un tel système de déshumidification - Google Patents
Système de déshumidification de l'air au sein d'une structure de culture close et structure de culture close équipée d'un tel système de déshumidification Download PDFInfo
- Publication number
- WO2024008642A1 WO2024008642A1 PCT/EP2023/068224 EP2023068224W WO2024008642A1 WO 2024008642 A1 WO2024008642 A1 WO 2024008642A1 EP 2023068224 W EP2023068224 W EP 2023068224W WO 2024008642 A1 WO2024008642 A1 WO 2024008642A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- condenser
- air
- evaporator
- heat transfer
- transfer fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/153—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/246—Air-conditioning systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
Definitions
- the present invention relates to an air dehumidification system within a closed cultivation structure. It also concerns a closed culture structure equipped with a dehumidification system.
- the field of the invention is the field of air dehumidification in closed culture structures.
- Humidity is a common problem for crops in closed structures. In fact, excess humidity condenses on the crop and degrades its quality. Additionally, damp areas encourage the development of diseases, fungi, parasites and mold.
- thermodynamic dehumidification systems There are also thermodynamic dehumidification systems or hygroscopic dehumidification systems.
- the temperature of the air leaving current dehumidification systems is higher than the desired temperature for the crops, which generates hot zones within the crop structures that they dehumidify, which is detrimental to the cultivation of plants present in said hot zones.
- An aim of the present invention is to remedy at least one of the aforementioned drawbacks.
- Another aim of the present invention is to propose a solution for dehumidifying the air within a closed culture structure allowing better control of the temperature within said structure and thus making it possible to obtain better cultivation conditions.
- Another aim of the present invention is to propose a dehumidification solution capable of dehumidifying without increasing the temperature of the air in the structure.
- thermodynamic circuit comprising:
- thermodynamic circuit an evaporator, to cool and dehumidify the air located in said culture structure by heat exchange with a heat transfer fluid from the thermodynamic circuit
- thermodynamic circuit further comprises a second condenser, supplying said first condenser with heat transfer fluid, to at least partially condense said heat transfer fluid by heat exchange with a first flow, said first flow being:
- the invention proposes an air dehumidification system making it possible to evacuate part of the heat found in the circuit thermodynamic, either outside the culture structure closed by exchange with a first flow of air coming from outside the culture structure, or in a tank provided for this purpose.
- a first flow of air coming from outside the culture structure or in a tank provided for this purpose.
- the solution according to the invention therefore allows better control of the air temperature of the closed culture structure during dehumidification thereof. In fact, it is possible to control the temperature of the air leaving the first condenser.
- the system according to the invention therefore makes it possible to reduce the temperature difference between the air leaving the first condenser and the rest of the air included in the closed culture structure. Consequently, it is possible to avoid the presence of hot zones in said culture structure, in particular at the outlet of the first condenser.
- a closed culture structure equipped with such a system does not need to be opened to replace hot air with cold air coming from outside.
- a closed cultivation structure equipped with a system of the invention can remain closed during cultivation, which reduces the risk of allowing insects and other parasites that could harm the crops to enter the structure.
- the system according to the invention allows better control of the cultivation environment within a closed cultivation structure.
- the first flow may be an air flow coming from outside the closed cultivation structure and discharged outside.
- the dehumidification of the air in the closed structure is carried out with the outside air and discharged outside after dehumidification.
- the first flow may be a flow of heat transfer liquid, such as for example water, discharged into a tank.
- the latter can be located outside said closed culture structure, or inside the closed culture structure.
- the heat transfer liquid is loaded with calories, coming from the closed culture structure, and which are transferred to it within the second condenser.
- This first flow of heat transfer liquid is stored in a tank or in a tank. These calories can then be used, immediately or later, directly or indirectly, to heat the air inside the closed structure, if necessary, such as for example in mid-season.
- system according to the invention may comprise a combination of what has just been described, namely:
- a second condenser crossed by a first flow of heat transfer liquid, such as for example water, discharged into a tank.
- the second condenser can be equipped with at least one fan, and more generally a drive means, to generate and control the first flow.
- the system is capable of regulating the heat exchange in the second condenser, and therefore of regulating the proportion of the heat transfer fluid passing through the second condenser which is condensed by said second condenser. Consequently, it is possible to regulate the proportion of the heat transfer fluid remaining to be condensed by the first condenser.
- the second condenser supplies the first condenser with a heat transfer fluid only in the liquid state.
- the heat exchanges in the first condenser, between the heat transfer fluid and air leaving the evaporator are negligible, or even non-existent. Consequently, it is possible not to heat the air flow leaving the evaporator and therefore to maximize the cooling of the air included in the closed culture structure.
- the air in the closed cultivation structure needs to be heated, for example in winter and/or during the night or when cultivation lamps are turned off, it is possible to reduce the speed of the drive means, and in particular of a fan, fitted to the second condenser so as to reduce the heat exchanges within said second condenser.
- the heat transfer fluid leaving the second condenser is less condensed and the proportion of the heat transfer fluid in the gaseous state is increased. Consequently, the heat exchanges in the first condenser, between the heat transfer fluid and air leaving the evaporator, are increased.
- the cold air leaving the evaporator is further heated and the temperature of the air included in the closed culture structure can be increased.
- the system can include at least one fan to generate and control the air flow, passing through the first condenser and the evaporator.
- At least one fan can be positioned:
- the system according to the invention can comprise at least one fan with constant speed to generate an air flow, passing through the first condenser and the evaporator.
- the speed of this air flow is constant. Consequently, the heat exchanges of the heat transfer fluid in the first condenser are not regulated by this flow. Indeed, in this embodiment the heat exchanges in the first condenser are dependent on the proportion of the heat transfer fluid remaining to be condensed at the outlet of the second condenser.
- the constant speed fan can be dimensioned to generate an air flow allowing the first condenser to condense the proportion of the heat transfer fluid remaining to be condensed at the outlet of the second condenser even when the fan fitted the second condenser is stopped.
- at least one fan of said system can be provided to be activated and/or controlled manually.
- system can further comprise:
- control unit to adjust the speed of:
- At least one probe for measuring a temperature and/or a humidity level can be provided to be positioned:
- the evaporator can be provided to be arranged outside the closed culture structure and the first condenser can be provided to be arranged inside the closed culture structure.
- the evaporator must be arranged so as to allow the air located in the structure to pass through the evaporator then the first condenser without this air, coming from inside the structure is not mixed with the air outside the structure.
- dedicated conduits can be used.
- the evaporator and the first condenser can be provided to be arranged outside the closed culture structure.
- the evaporator and the first condenser must be arranged so as to allow the air located in the structure to pass through the evaporator then the first condenser without this air, coming from inside the structure. structure is mixed with air outside the structure.
- dedicated conduits can be used.
- the first condenser and the evaporator can be provided to be arranged inside the closed culture structure.
- the second condenser can be provided to be arranged inside the structure.
- the second condenser must be arranged so as to allow said first flow to pass through said second condenser without this first flow being mixed with the air within the structure.
- conduits dedicated to the first flow can be used.
- the second condenser can be provided to be arranged outside the closed culture structure.
- thermodynamic circuit can further comprise a heat transfer fluid reservoir, disposed between the first condenser and the expander.
- thermodynamic circuit can comprise at least one constant pressure valve placed downstream of the first condenser.
- the first condenser can be supplied with a heat transfer fluid at a temperature too low to be condensed by heat exchange with the air included in the closed culture structure.
- the heat transfer fluid can have a condensation temperature of around 10°C. Furthermore, under these conditions, the heat transfer fluid leaving the second condenser and supplying the first condenser can be at a temperature of approximately 10°C. Consequently, the heat transfer fluid cannot be condensed by heat exchange with the air included in the structure, at a temperature of 20°C.
- the use of a constant pressure valve downstream of the first condenser makes it possible to increase the condensation temperature of said heat transfer fluid and therefore makes it possible to condense the latter in the first condenser even when the temperature at exterior of the structure is lower than that inside the structure.
- the constant pressure valve can be designed to close when the compressor is turned off.
- the constant pressure valve can act as a check valve. This is particularly advantageous for embodiments comprising a heat transfer liquid reservoir, placed between the first condenser and the expander. Indeed, in such an embodiment, the constant pressure valve makes it possible to avoid the migration of the heat transfer fluid from the tank towards the first condenser when the system is stopped.
- thermodynamic circuit may comprise a non-return valve disposed between the first condenser and the second condenser.
- the compressor can be a fixed speed compressor.
- the compressor can be a variable speed compressor.
- variable speed compressor can be controlled by said control unit.
- a closed cultivation structure is provided equipped with a system according to the invention.
- the closed culture structure can be:
- the closed cultivation structure can for example be a structure intended to be placed outdoors or a structure intended to be placed inside a building.
- the closed culture structure can be a fixed, non-movable structure, or a movable or even mobile structure.
- the closed cultivation structure can be equipped with cultivation lamps.
- the closed culture structure can be a so-called opaque structure, each of the walls of which is opaque to light, so that light coming from outside the closed culture structure cannot penetrate the structure. inside said closed culture structure. Furthermore, when such an opaque structure is equipped with grow lights, the light generated inside the opaque structure is contained therein. That is particularly advantageous for structures located inside buildings or homes.
- the structure may comprise at least one transparent or translucent wall, so as to allow light coming from outside the closed culture structure to penetrate inside said structure.
- FIGURE 1 is a schematic representation of a non-limiting embodiment of an air dehumidification system within a closed culture structure
- FIGURE 2 is a schematic representation of another non-limiting embodiment of an air dehumidification system within a closed cultivation structure
- FIGURE 3a and 3b are schematic and partial representations of a non-limiting example of a closed culture structure equipped with a dehumidification system
- FIGURE 4a and 4b are schematic and partial representations of a building including another non-limiting example of a closed culture structure equipped with a dehumidification system.
- FIGURE 1 is a schematic representation of a non-limiting embodiment of an air dehumidification system within a closed culture structure.
- the air dehumidification system 100 of a closed culture structure comprises a thermodynamic circuit comprising a heat transfer fluid.
- thermodynamic circuit comprises an evaporator 102, to cool and dehumidify the air within said culture structure by heat exchange with the heat transfer fluid of the thermodynamic circuit.
- thermodynamic circuit further comprises a first condenser 104 for heating the air leaving the evaporator 102 by heat exchange with said heat transfer fluid.
- thermodynamic circuit comprises an expander 106, downstream of said first condenser 104 and upstream of said evaporator 102 as well as a compressor 108, downstream of said evaporator 102 and upstream of said first condenser 104.
- thermodynamic circuit further comprises a second condenser 110, supplying said first condenser 104 with heat transfer fluid.
- This second condenser 110 of the system 100 is designed to at least partially condense said heat transfer fluid, coming from the compressor 108, by heat exchange with a first flow of air 112, coming from the outside of said closed culture structure and discharged to the outside of said closed culture structure.
- the air dehumidification system 100 is capable of evacuating part of the heat found in the thermodynamic circuit outside the closed culture structure. Thus, it is possible to dehumidify the air in a closed culture structure without increasing the air temperature inside the structure, evacuating the excess heat from the dehumidification system 100 outside the closed culture structure.
- the system 100 is capable of not increasing the air temperature within the closed culture structure.
- the first condenser 104 supplies the expander 106 with heat transfer fluid in the liquid state.
- the regulator 106 lowers the pressure of the heat transfer fluid and modulates the flow of heat transfer fluid at the inlet of the evaporator 102.
- the heat transfer fluid is thus converted to the gaseous state in the evaporator 102 by heat exchange with the air 114 located inside the structure.
- the compressor 108 increases the pressure of the heat transfer fluid coming from the evaporator 102.
- the excess heat from the system 100 can then be evacuated from the closed culture structure by the second condenser 110 by condensing part of the heat transfer fluid by heat exchange with the first air flow 112.
- the second condenser 110 then supplies the first condenser 104 with heat transfer fluid which condenses the part of the heat transfer fluid still in the gaseous state, by heat exchange with the flow 114.
- FIGURE 2 is a schematic representation of another non-limiting embodiment of an air dehumidification system within a closed culture structure.
- the system 200 of FIGURE 2 includes all the elements of the device 100 of FIGURE 1.
- the system 200 further comprises a first fan 202 fitted to the second condenser 110 to generate and control said first air flow 112 passing through the second condenser 110.
- the first fan 202 is positioned so as to push air through the second condenser 110.
- the system 200 may include a fan positioned to draw air through the second condenser 110.
- the system 200 further comprises a second fan 204 to generate and control the second air flow 114 passing through the first condenser 104 and the evaporator 102.
- the second fan 204 is positioned between the evaporator 102 and the first condenser 104, so as to draw air through the evaporator 102 and push air through the first condenser 104.
- the system 200 may comprise a fan positioned upstream of the evaporator 102 so as to push air into the evaporator 102 then into the first condenser 104 and/or downstream of the first condenser 104 so as to draw air into the evaporator 102 and into the first condenser 104.
- the system 200 includes a probe 206 for measuring a temperature in the closed culture structure as well as a probe 208 for measuring a humidity level in the closed culture structure.
- the system 200 comprises a control unit 210 for adjusting the speed of the first fan 202 and the second fan 204 as a function of at least one temperature and/or a humidity level measured by the probe 206 and/or probe 208 respectively.
- the control unit 210 of the system 200 is capable of regulating the heat exchange in the second condenser 110, and therefore of regulate the proportion of the heat transfer fluid passing through the second condenser 110 which is condensed by said second condenser 110. Consequently, it is possible to regulate the proportion of the heat transfer fluid remaining to be condensed by the first condenser 104.
- the system 200 is capable to control the proportion of the heat transfer fluid in the gaseous state and in the liquid state at the outlet of the second condenser 110 supplying the first condenser 104.
- control unit 210 is capable of adapting the speed of the fan 204 and therefore of regulating the flow 114 so as to allow the first condenser 104 to condense the proportion of the heat transfer fluid in the gaseous state into outlet of the second condenser 110.
- control unit 210 when the control unit 210 reduces the rotation speed of the first fan 202 in order to reduce the proportion of the heat transfer fluid condensed by the second condenser 110, the control unit can increase the rotation speed of the second fan 204.
- the control unit 210 when the control unit 210 increases the rotation speed of the first fan 202 in order to increase the proportion of the heat transfer fluid condensed by the second condenser 110, the control unit can reduce the rotation speed of the second fan 204.
- a minimum rotation speed of the second fan 204 can be predefined. This minimum rotation speed makes it possible to guarantee a flow 114 allowing proper operation of the evaporator 102.
- the control unit 210 cannot reduce the speed of the second fan 204 below this predefined minimum speed.
- this minimum rotation speed may be a function of a humidity level measured in the closed culture structure. Thus, it is possible that the minimum rotation speed is adapted to the desired amount of dehumidification.
- control unit 210 is capable of adapting the speed of the second fan 204 and therefore of regulating the flow 114 so as to control the heat exchanges within the evaporator 102. Thus, it is possible to control the quantity of dehumidification provided by the system 200.
- the second fan 204 can be a constant speed fan, configured to generate an air flow 114 allowing the first condenser 104 to condense the proportion of the heat transfer fluid remaining to be condensed at the outlet of the second condenser 110 even when the first fan 202 equipping the second condenser 110 is stopped.
- the compressor 108 of the system 200 is a variable speed compressor provided to be controlled by the control unit 210.
- the system 200 is capable of regulating dehumidification. Indeed, by controlling the speed of the compressor 108 it is possible to control the quantity of heat transfer fluid drawn into the expander 106 and into the evaporator 102. Thus regulating the quantity of fluid passing through the evaporator 102 makes it possible to regulate the possible heat exchanges. in the evaporator 102 and therefore regulate dehumidification.
- the system 200 comprises a constant pressure valve 212 placed directly downstream of said first condenser 104. Controlling and setting the pressure required at the outlet of the first condenser 104 makes it possible to control the condensation temperature of the heat transfer fluid.
- the first condenser 104 can be supplied with a heat transfer fluid at a temperature too low to be condensed by heat exchange with the air 114 included in the closed culture structure.
- the system 200 comprises a non-return valve 214 disposed between said first condenser 104 and said second condenser 110.
- This valve 214 prevents the heat transfer fluid from migrating from the first condenser 104 to the second condenser 110.
- This is particularly advantageous when the second condenser 110 is intended to be arranged outside the culture structure, as described below in relation to FIGURE 3a and 3b. Indeed, in such an embodiment, when the system is stopped and the exterior temperature of the closed culture structure is lower than the interior temperature of the closed structure, the heat transfer fluid has a higher temperature and pressure in the first condenser than in the second, which can lead to migration of the fluid from the first condenser to the second condenser.
- the system 200 comprises a liquid reservoir 216 with heat transfer liquid, disposed between said first condenser 104 and the regulator 106, more precisely between the constant pressure valve 212 and the regulator 106.
- the system 200 is thus capable of guaranteeing proper operation of the regulator 106 and therefore of the evaporator 102.
- the use of a reservoir 216 upstream of the regulator 106 makes it possible to guarantee that the heat transfer fluid is always available.
- the constant pressure valve 212 can be designed to close when the compressor 108 is turned off.
- the constant pressure valve 212 can act as a check valve.
- the constant pressure valve 212 makes it possible to avoid the migration of the heat transfer fluid from the tank 216 to the second condenser 104 when the system is stopped.
- FIGURE 3a and 3b are schematic and partial representations of a non-limiting embodiment of a closed culture structure equipped with a dehumidification system.
- FIGURE 3a illustrates an overview of the closed culture structure 300 equipped with a dehumidification system 302 according to the invention.
- FIGURE 3b illustrates, through an enlarged view, the elements included in frame A-A of FIGURE 3a, such as the dehumidification system 302 of the closed culture structure 300.
- the enclosed cultivation structure 300 is an immobile structure of the cultivation greenhouse type.
- This closed culture structure 300 comprises an interior volume 304 delimited by walls 306, a ceiling 308 and a floor 310.
- the closed cultivation structure 300 is equipped with a cultivation lamp 312 attached to the ceiling 308.
- plants 314 are present inside the cultivation structure 300 .
- FIGURE 3a and 3b the air dehumidification system 302 of closed culture structure 300 is partially illustrated in FIGURE 3a and 3b. Indeed, only the evaporator 102, the first condenser 104, the second condenser 110 and the circuit connecting them are illustrated.
- the dehumidification system 302 can be a system 100 or 200 as described above in relation to FIGURES 1 and 2, or more generally, a system according to the invention.
- the evaporator 102 and the first condenser 104 are arranged inside the culture structure 300 while the second condenser 110 is arranged outside it.
- the first air flow 112 conveys outside air to the second condenser 110 then rejects this air outside the closed culture structure 300
- FIGURE 3a and 3b are schematic and partial representations of a building 400 including another non-limiting example of a closed culture structure 401 equipped with a dehumidification system 402.
- FIGURE 4a illustrates an overview of the building
- FIGURE 4b illustrates, through an enlarged view, the elements included in frame B-B of FIGURE 4a, such as the dehumidification system 402 of the closed culture structure 300.
- the closed culture structure 401 is a movable structure of the culture chamber or culture tent type. This closed culture structure
- FIGURES 4a and 4b includes all the elements of the closed culture structure 300 of FIGURES 3a and 3b.
- FIGURE 4a and 4b For the sake of readability, the air dehumidification system 402 of closed culture structure 401 is partially illustrated in FIGURE 4a and 4b. Indeed, only the evaporator 102, the first condenser 104, the second condenser 110 and the circuit connecting them are illustrated.
- the dehumidification system 402 can be a system 100 or 200 as described above in relation to FIGURES 1 and 2, or more generally, a system according to the invention.
- the evaporator 102, the first condenser 104 and the second condenser 110 of the system 402 are arranged inside the closed culture structure 401.
- the air flow 114, of air included in the closed culture structure 300, passing through the evaporator 102 then the first condenser 104 is easy to generate.
- the second condenser 110 is connected to the outside of the closed culture structure by air ducts 404 and 406.
- air ducts 404 and 406 it is possible to generate the first air flow 112 conveying the air outside the second condenser 110 then reject it outside the closed culture structure 401 without this outside air being mixed with the air located inside the closed culture structure 401.
- the outside air can enter the first air duct 404 through a first opening 408 in the wall 306, pass through the second condenser 110 then be directed by the second duct 406 towards the outside of the structure 401 through a second opening 408.
- the system according to the invention comprises a second condenser 110 crossed by a first flow which is a flow of air coming from outside the structure of closed culture and released into the outside atmosphere.
- the first flow can be a flow of water, or generally a flow of heat transfer liquid, discharged into a tank, placed outside or inside the closed cultivation structure.
- the heat transfer liquid is loaded with calories, coming from the closed culture structure, and which are transferred to it within the second condenser.
- This first flow of heat transfer liquid loaded with calories can then be stored, for example in a tank or in a tank. These calories can then be used, immediately or later, directly or indirectly, to heat the air inside the closed structure, if necessary, such as for example in mid-season.
- the system according to the invention can comprise a combination of what has just been described, namely: - a second condenser crossed by a first flow of air coming from outside the closed culture structure and rejected outside, as shown in the FIGURES, and
- the two second condensers can be arranged one behind the other in any order, between the compressor 108 and the first condenser 104.
- the invention is not limited to the examples detailed above.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Greenhouses (AREA)
- Central Air Conditioning (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23739486.1A EP4551871A1 (fr) | 2022-07-05 | 2023-07-03 | Système de déshumidification de l'air au sein d'une structure de culture close et structure de culture close équipée d'un tel système de déshumidification |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2206869 | 2022-07-05 | ||
| FR2206869A FR3137534B1 (fr) | 2022-07-05 | 2022-07-05 | Système de déshumidification de l’air au sein d’une structure de culture close et structure de culture close équipée d’un tel système de déshumidification. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024008642A1 true WO2024008642A1 (fr) | 2024-01-11 |
Family
ID=83355270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/068224 Ceased WO2024008642A1 (fr) | 2022-07-05 | 2023-07-03 | Système de déshumidification de l'air au sein d'une structure de culture close et structure de culture close équipée d'un tel système de déshumidification |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4551871A1 (fr) |
| FR (1) | FR3137534B1 (fr) |
| WO (1) | WO2024008642A1 (fr) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190141911A1 (en) * | 2017-10-11 | 2019-05-16 | GS Thermal Solutions Inc. | Climate control system and method for indoor horticulture |
| EP3633290A1 (fr) * | 2017-05-31 | 2020-04-08 | Daikin Industries, Ltd. | Climatiseur |
| CN113840645A (zh) * | 2019-05-27 | 2021-12-24 | 三菱电机株式会社 | 除湿装置 |
-
2022
- 2022-07-05 FR FR2206869A patent/FR3137534B1/fr active Active
-
2023
- 2023-07-03 EP EP23739486.1A patent/EP4551871A1/fr active Pending
- 2023-07-03 WO PCT/EP2023/068224 patent/WO2024008642A1/fr not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3633290A1 (fr) * | 2017-05-31 | 2020-04-08 | Daikin Industries, Ltd. | Climatiseur |
| US20190141911A1 (en) * | 2017-10-11 | 2019-05-16 | GS Thermal Solutions Inc. | Climate control system and method for indoor horticulture |
| CN113840645A (zh) * | 2019-05-27 | 2021-12-24 | 三菱电机株式会社 | 除湿装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3137534A1 (fr) | 2024-01-12 |
| EP4551871A1 (fr) | 2025-05-14 |
| FR3137534B1 (fr) | 2025-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1857363A1 (fr) | Dispositif de régulation de température | |
| FR2478274A1 (fr) | Pompe a chaleur | |
| WO2024008642A1 (fr) | Système de déshumidification de l'air au sein d'une structure de culture close et structure de culture close équipée d'un tel système de déshumidification | |
| EP3721703A1 (fr) | Système de culture autonome | |
| WO2010004134A1 (fr) | Procédé et dispositif de régulation de la température et de l'hygrométrie a l'intérieur d'un bâtiment | |
| EP3213004A1 (fr) | Hub de distribution modulée d'air neuf | |
| WO2021053227A1 (fr) | Unité de conditionnement d'air pour aéronef | |
| EP1695010A1 (fr) | Appareil de chauffage et de climatisation | |
| CA2504138A1 (fr) | Machine de traitement thermodynamique d'air, procede de traitement de produits en vrac par de l'air traite par une telle machine et sechoir automatique mettant en oeuvre un tel procede | |
| EP2442041B1 (fr) | Installation de ventilation mécanique par insufflation hygrorégulée et procédé associé | |
| FR2974404A1 (fr) | Systeme de ventilation | |
| FR3059086A1 (fr) | Systeme de production de chauffage et/ou d'eau chaude sanitaire, couplant une pompe a chaleur avec un puits enthalpique | |
| FR2778456A1 (fr) | Dispositif de sechage pour l'agriculture | |
| WO2003081149A1 (fr) | L'air liquide societe anonyme a directoire et conseil de surveillance pour l'etude et l'exploitation des procedes georges claude | |
| EP3581853B1 (fr) | Module de transfert thermique pour la production d'eau chaude | |
| EP1124097B1 (fr) | Système de Chauffage et de climatisation | |
| FR2842588A1 (fr) | Procede d'evacuation de chaleur degagee a l'interieur d'un local, par ventilation a debit variable, et systeme de mise en oeuvre | |
| FR3073273B1 (fr) | Installation de chauffage et/ou de production d'eau chaude sanitaire dans un batiment | |
| FR3065062B1 (fr) | Procede et installation pour le controle de la qualite et/ou de la temperature de l'air d'un batiment | |
| FR2966226A1 (fr) | Installation de ventilation mecanique par insufflation hygroregulee et procede associe | |
| EP2282136A1 (fr) | Installation de ventilation mécanique contrôlée à double flux d'un bâtiment | |
| EP0155718B1 (fr) | Installation pour le maintien à température avec de l'air chaud, de locaux tels que des halles, hangars, bâtiments d'usine, etc. | |
| LU84915A1 (fr) | Dispositif et moyens de controle d'installations de conditionnement de locaux | |
| WO2025168648A1 (fr) | Ensemble réfrigérant et procédé de conservation et de présentation du poisson | |
| CA2063882A1 (fr) | Kit pour convertir une unite de climatisation en pompe thermique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23739486 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023739486 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023739486 Country of ref document: EP Effective date: 20250205 |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023739486 Country of ref document: EP |