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GB2622899A - Outdoor spray cooling system and method - Google Patents

Outdoor spray cooling system and method Download PDF

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Publication number
GB2622899A
GB2622899A GB2300654.7A GB202300654A GB2622899A GB 2622899 A GB2622899 A GB 2622899A GB 202300654 A GB202300654 A GB 202300654A GB 2622899 A GB2622899 A GB 2622899A
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United Kingdom
Prior art keywords
spray
spray cooling
controller
cooling system
outdoor
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Application number
GB2300654.7A
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GB2622899B (en
GB202300654D0 (en
Inventor
Meng Xi
Meng Li
Gao Yi
Gao Weijun
Gao Yanna
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Qingdao University of Technology
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Qingdao University of Technology
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Publication of GB202300654D0 publication Critical patent/GB202300654D0/en
Publication of GB2622899A publication Critical patent/GB2622899A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F24F6/14—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
    • 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
    • F24F2110/12—Temperature of the outside air
    • 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
    • F24F2110/22—Humidity of the outside air
    • 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
    • F24F2110/30—Velocity
    • F24F2110/32—Velocity of the outside air

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Dispersion Chemistry (AREA)
  • Photovoltaic Devices (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

An outdoor spray cooling system and method. The system comprises a solar cell panel 1, a controller 2, a meteorological parameter detection sensor 3, a semiconductor refrigeration system (4, fig 1) and a spray cooling system (5). The solar cell panel, the controller, the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system are installed in an area to be cooled in an outdoor thermal environment. The meteorological parameter detection sensor comprises a temperature and humidity sensor and a wind speed sensor. The system and the method utilize the solar cell panel to supply power. The controller receives temperature, humidity and wind speed signals collected by the meteorological parameter detection sensor, calculates the human comfort index, judges whether the human comfort index is greater than a preset overheating threshold value or not, and if so, turns on the semiconductor refrigeration system and the spray cooling system for outdoor cooling.

Description

OUTDOOR SPRAY COOLING SYSTEM AND METHOD
TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of outdoor cooling, in particular to an outdoor spray cooling system and method.
BACKGROUND
[0002] In recent years, with the continuous development of cities, urban heat island has seriously affected the thermal environment of outdoor travel. In order to alleviate the negative impacts of urban heat island and local overheating, it is of great significance for future urban development to improve the outdoor thermal environment and the human thermal comfort. The severe high-temperature weather seriously affects the human health and comfort, but the traditional cooling technology is difficult to maintain the requirement of outdoor space for thermal environment and the energy consumption is high. Therefore, the spray cooling system is widely used in outdoor environment as an active cooling technology with obvious and significant transient cooling benefits for specific environments. However, in the current operation process of the spray system, the spray system often runs continuously, resulting in the waste of resources. Moreover, the evaporation process of spray may be finished before spray reaches the cooling area, and the cooling effect felt by the human body is not obvious, but excessive spray can aggravate the humidity feeling of the human body in the spray environment, so that the thermal comfort of the human body is reduced. Therefore, at present, the spray cooling equipment often has the problems that resources are wasted caused by continuous operation, and the cooling effect under the spray system is not obvious.
SUMMARY
[0003] The present disclosure aims to provide an outdoor spray cooling system and method. Solar photovoltaic power generation and semiconductor refrigeration technology are combined to optimize the initial spray water temperature, so that significant cooling effect is achieved while the waste of resources is reduced.
[0004] In order to achieve the-mentioned purpose, the present disclosure provides the following scheme [0005] An outdoor spray cooling system comprises a solar cell panel, a controller, a meteorological parameter detection sensor, a semiconductor refrigeration system and a spray cooling system, wherein the solar cell panel, the controller, the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system are installed in an area to be cooled in an outdoor thermal environment; the meteorological parameter detection sensor comprises a temperature and humidity sensor and a wind speed sensor; [0006] the solar cell panel is respectively connected with the controller, the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system for power supply; and [0007] the controller is respectively connected with the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system.
[0008] Optionally, the spray cooling system comprises a water tank, a spray device, a spray pipeline and a spray nozzle; the water inlet of the water tank is connected with a city water pipe; the water outlet of the water tank is connected with the inlet of the spray device; the outlet of the spray device is connected with a spray pipeline; the spray nozzle is arranged on the spray pipeline; and the semiconductor refrigeration system is connected with the spray pipeline. [0009] Optionally, the outdoor spray cooling system further comprises a storage battery, wherein the storage battery is connected with the solar cell panel and used for storing surplus electric energy generated by the solar cell panel; and the storage battery is further respectively connected with the controller, the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system for standby power supply.
[0010] An outdoor spray cooling method, based on the outdoor spray cooling system, comprises the following steps: [0011] using the solar cell panel to supply power for a controller, a meteorological parameter detection sensor, a semiconductor refrigeration system and a spray cooling system, respectively; 100121 receiving temperature, humidity and wind speed signals collected by the meteorological parameter detection sensor by the controller; 100131 calculating the human comfort index according to the temperature, humidity and wind speed signals by the controller; 100141 judging whether the human comfort index is greater than a preset overheating threshold value or not by the controller; [0015] if the human comfort index is greater than the preset overheating threshold value, turning on the semiconductor refrigeration system and the spray cooling system for outdoor cooling by the controller, and returning the step of judging whether the human comfort index is greater than a preset overheating threshold value or not; and [0016] if the human comfort index is less than or equal to the preset overheating threshold value, not turning on the semiconductor refrigeration system and the spray cooling system or stopping the operation of the semiconductor refrigeration system and the spray cooling system by the controller.
[0017] Optionally, the step of calculating the human comfort index according to the temperature, humidity and wind speed signals by the controller specifically comprises the following steps: [0018] substituting the values of the temperature, humidity and wind speed signals into a thermal comfort regression evaluation model fc,/th = 0. 8t + 32)-0.550 - (i.8t -26)-3. 2 VT by the controller to calculate the human comfort index Li-HB t is temperature, f is humidity and V is wind speed.
100191 Optionally, in the step of judging whether the human comfort index is greater than a preset overheating threshold value or not by the controller, the preset overheating threshold value is 75.
100201 Optionally, the step of turning on the semiconductor refrigeration system and the spray cooling system for outdoor cooling by the controller specifically comprises the following sub steps: [0021] turning on the semiconductor refrigeration system and the spray cooling system by the controller, sucking water in the water tank into the spray pipeline through a high-pressure water pump by the spray device in the spray cooling system, refrigerating the water in the spray pipeline by the semiconductor refrigeration system, and spraying the cooled water from the spray nozzle for outdoor cooling.
[0022] Optionally, the outdoor spray cooling method further comprises the following step: [0023] using a storage battery to store surplus electric energy generated by the solar cell panel for standby power supply.
[0024] According to the specific embodiments provided by the present disclosure, the present disclosure has the following technical effects.
[0025] The present disclosure provides an outdoor spray cooling system and method. The outdoor spray cooling system comprises a solar cell panel, a controller, a meteorological parameter detection sensor, a semiconductor refrigeration system and a spray cooling system, wherein the solar cell panel, the controller, the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system are installed in an area to be cooled in an outdoor thermal environment; and the meteorological parameter detection sensor comprises a temperature and humidity sensor and a wind speed sensor. The solar cell panel is used for supplying power for the controller, the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system, respectively. The controller receives temperature, humidity and wind speed signals collected by the meteorological parameter detection sensor, calculates the human comfort index, and judges whether the human comfort index is greater than the preset overheating threshold value or not. If the human comfort index is greater than the preset overheating threshold value, the semiconductor refrigeration system and the spray cooling system are turned on for outdoor cooling. The system and the method can quickly improve the regional thermal environment under the condition of ensuring the comfort of human body, and have obvious cooling effect. In addition, by using solar photovoltaic power generation and semiconductor refrigeration technology, energy consumption and environmental pollution are reduced, and the purposes of energy conservation and emission reduction are achieved.
BRIEF DESCRIPTION OF THE DRAWINGS
100261 To describe the technical scheme in the embodiments of the present disclosure or in the prior art more clearly, the following briefly introduces the attached figures required for describing the embodiments. Apparently, the attached figures in the following description show merely some embodiments of the present disclosure, and those skilled in the art may still derive other attached figures from these attached figures without creative efforts.
[0027] FIG. I is a structural schematic diagram of an outdoor spray cooling system in the present disclosure.
[0028] FIG. 2 is a circuit connection schematic diagram of an outdoor spray cooling system in the present disclosure.
100291 FIG. 3 is a schematic diagram of an outdoor spray cooling method in the present disclosure.
[0030] FIG. 4 is a schematic diagram of a specific implementation mode of an outdoor spray cooling in the present disclosure.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0031] The following clearly and completely describes the technical scheme in the embodiments of the present disclosure with reference to the attached figures in the embodiments of the present disclosure. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present disclosure. Based on the embodiment in the present disclosure, all other embodiments obtained by the ordinary technical staff in the art under the premise of without contributing creative labor belong to the scope protected by the present disclosure.
[0032] The present disclosure aims to provide an outdoor spray cooling system and method. Solar photovoltaic power generation and semiconductor refrigeration technology are combined to optimize the initial spray water temperature, so that significant cooling effect is achieved while the waste of resources is reduced.
[0033] To make the foregoing objective, features and advantages of the present disclosure clearer and more comprehensible, the present disclosure is further described in detail below with reference to the attached figures and specific embodiments.
[0034] FIG. 1 is a structural schematic diagram of an outdoor spray cooling system in the present disclosure. FIG. 2 is a circuit connection schematic diagram of an outdoor spray cooling system in the present disclosure. Referring to FIG. 1 and FIG. 3, the outdoor spray cooling system comprises a solar cell panel 1, a controller 2, a meteorological parameter detection sensor 3, a semiconductor refrigeration system 4 and a spray cooling system 5, wherein the solar cell panel 1, the controller 2, the meteorological parameter detection sensor 3, the semiconductor refrigeration system 4 and the spray cooling system 5 are installed in an area 7 to be cooled in an outdoor thermal environment. The meteorological parameter detection sensor 3 comprises a temperature and humidity sensor and a wind speed sensor (usually an anemometer). The semiconductor refrigeration system 4 and the spray cooling system 5 together fonn a semiconductor refrigeration spray system. According to the outdoor spray cooling system, solar photovoltaic power generation is matched with semiconductor refrigeration technology, and the system can be applied to open or semi-open outdoor thermal environment in summer, so an area 7 to be cooled in an outdoor thermal environment can be a bus stop waiting area, a high-speed rail platform waiting area, a semi-outdoor restaurant or a square rest pavilion. In the specific implementation mode as shown in FIG. 4, the area 7 to be cooled is a bus stop waiting area.
[0035] Referring to FIG. 2, the solar cell panel I is respectively connected with the controller 2, the meteorological parameter detection sensor 3, the semiconductor refrigeration system 4 and the spray cooling system 5 for power supply. The controller 2 is respectively connected with the meteorological parameter detection sensor 3, the semiconductor refrigeration system 4 and the spray cooling system 5.
[0036] In practical application, the outdoor spray cooling system further comprises a storage battery 6, wherein the storage battery 6 is connected with the solar cell panel 1 and used for storing surplus electric energy generated by the solar cell panel 1. The storage battery 6 is further respectively connected with the controller 2, the meteorological parameter detection sensor 3, the semiconductor refrigeration system 4 and the spray cooling system 5 for standby power supply. [0037] The photovoltaic power generation of the solar cell panel 1 supplies power to the whole system. After the solar cell panel 1 converts solar energy into electric energy, one part of electric energy is used for driving the meteorological parameter detection sensor 3, the semiconductor refrigeration system 4 and the spray cooling system 5, and the other part of electric energy enters an energy storage device (such as the storage battery 6) for storage, so that electric energy can be used in cloudy days or at night, and the system can be convenient to run normally all day.
[0038] According to the outdoor spray cooling system based on solar system power supply and semiconductor refrigeration technology refrigeration, the solar cell panel 1 is used for outputting electric energy, and the storage battery 6 is used for storing surplus electric energy. The temperature, humidity and wind speed are monitored by the meteorological parameter detection sensor 3. The controller 2 calculates and analyzes captured meteorological parameters to obtain the human thermal comfort index in the current environment, then judges whether the human thermal comfort index exceeds the preset threshold value or not, and if so, turns on the semiconductor refrigeration system 4 and the spray cooling system 5 for outdoor cooling;. The meteorological parameters are continuously monitored. If the meteorological parameters meet the thermal comfort range of human body in the thermal environment, the semiconductor refrigeration and spraying are turned off and continuous monitoring of the meteorological parameters is carried out circularly.
[0039] Referring to FIG. 4, the spray cooling system 5 specifically comprises a water tank 501, a spray device 502, a spray pipeline 503 and a spray nozzle 504. The water inlet of the water tank 501 is connected with a city water pipe 8. The water outlet of the water tank 501 is connected with the inlet of the spray device 502. The outlet of the spray device 502 is connected with a spray pipeline 503. The spray nozzle 504 is arranged on the spray pipeline 503. The semiconductor refrigeration system 4 is also arranged on the spray pipeline 503 and connected with the spray pipeline 503.
[0040] Based on the outdoor spray cooling system, the present disclosure further provides an outdoor spray cooling method. Referring to FIG. 3, the outdoor spray cooling method comprises the following steps.
[0041] SI, using the solar cell panel 1 to supply power for a controller 2, a meteorological parameter detection sensor 4, a semiconductor refrigeration system 4 and a spray cooling system 5, respectively.
[0042] The solar cell panel 1 can carry out photoelectric conversion to generate electric energy, and the solar cell panel 1 is connected in series to an inverter battery terminal, and solar photovoltaic is used for supplying power for system equipment.
[0043] S2, receiving temperature, humidity and wind speed signals collected by the meteorological parameter detection sensor 3 by the controller 2.
[0044] The meteorological parameter detection sensor 3 comprises a temperature and humidity sensor and a wind speed sensor (usually an anemometer), and can collect environmental parameters such as air temperature, relative humidity and wind speed.
100451 S3, calculating the human comfort index according to the temperature, humidity and wind speed signals by the controller 2.
[0046] In the hot summer outdoor thermal environment, the standard of human thermal comfort is difficult to reach. Based on the obtained regional environmental parameters (temperature, humidity and wind speed), the human thermal comfort index /CHB is calculated by the following thermal comfort regression evaluation model: /culi = 0.8/ + 32)-0.55(1-)* (1.81 -26)-3.2.11; [0047] In summer, ); [0048] Wherein IcHB is human comfort index, t is air temperature and also called temperature ('C), f is humidity and usually relative humidity (%), and V is wind speed (m/s) [0049] According to the grade standard of the human comfort index of China Meteorological Bureau, the human comfort index is divided into nine grades, such as chill, cold, cool, pleasantly cool, comfortable, warm, hot and burning hot grades, which correspond to the corresponding somatosensory states. The comfort grade (/, is larger than 55 and less than or equal to 70) is the fifth grade (comfortable, most people feel comfortable), and the comfort grade ( /c_IIB is larger than 70 and less than or equal to 75) is the sixth grade (warm, most people feel comfortable). Therefore, the preset comfort threshold value c"ii is set to be larger than 55 and less than or equal to 75, and the preset overheating threshold value is set to be 75, that is, when um is larger than 75, it is judged that the human thermal comfort index exceeds the preset threshold value, that is, refrigeration spray needs to be turned on to cool down, and then the human thermal comfort index reaches the comfort range.
[0050] S4, judging whether the human comfort index is greater than a preset overheating threshold value or not by the controller 2; and the preset overheating threshold value is 75 [0051] The meteorological parameter detection sensor 3 can continuously monitor the regional thermal environment, and if the regional thermal environment does not meet the human thermal comfort range, step S5 is executed When the regional thermal environment meets the human thermal comfort range, the spray cooling system 5 and the semiconductor refrigeration system 4 are turned off and 54 is returned for continuous monitoring [0052] 55, if the human comfort index is greater than the preset overheating threshold value, turning on the semiconductor refrigeration system 4 and the spray cooling system 5 for outdoor cooling by the controller 2, and returning the step S4.
[0053] SG, if the human comfort index is less than or equal to the preset overheating threshold value, not turning on the semiconductor refrigeration system 4 and the spray cooling system 5 or stopping the operation of the semiconductor refrigeration system 4 and the spray cooling system 5 by the controller 2.
100541 Specifically, the controller 2 turns on the semiconductor refrigeration system 4 and the spray cooling system 5, the spray device 502 in the spray cooling system 5 sucks water in the water tank 501 into the spray pipeline 503 through a high-pressure water pump in the device, the semiconductor refrigeration system 4 refrigerates the water in the spray pipeline 503, and the cooled water is sprayed from the spray nozzle 504 for outdoor cooling.
[0055] In practical application, the outdoor spray cooling method further comprises the following step: 100561 using a storage battery 6 to store surplus electric energy generated by the solar cell panel 1 for standby power supply.
100571 According to the system and the method, by using solar photovoltaic power generation and semiconductor refrigeration technology, the energy consumption can be reduced while the spraying effect is greatly improved. The controller 2 can control the meteorological parameter detection sensor 3 to automatically collect and capture current regional thermal environment parameters, including outdoor environmental temperature t, spatial relative humidity f and wind speed 12, the three parameters are respectively substituted into the thermal comfort regression evaluation model (1), and then the environmental parameters are analyzed and calculated. Whether the current outdoor thermal environment meets the human thermal comfort index is determined or not. If the calculation result does not meet the comfort index, semiconductor refrigeration and spray cooling are turned on. In the spraying period, the sensor continuously monitors the environmental parameters and gives feedback.
100581 The system and the method have prominent advantages in the technology of optimizing the spraying effect, and the initial temperature of the spray is reduced in advance by the semiconductor refrigeration technology. The unobvious cooling effect caused by too small spray amount and early evaporation can be avoided, the moist feeling of the skin on the human surface caused by large spray amount can also be avoided, and the development and utilization of clean energy are promoted by photoelectric conversion while the spraying efficiency is obviously improved. On the other hand, the controller 2 can effectively calculate the thermal comfort index of the current environment, and give an electric signal to instruct the start and stop of the system in time, so that unnecessary machine damage and maintenance cost caused by long-term operation of the machine are avoided. Therefore, the outdoor spray cooling system and method based on solar photovoltaic power generation and semiconductor refrigeration technology can be well applied to the cooling of outdoor or semi-outdoor space in summer.
100591 FIG. 4 is a schematic diagram of a specific implementation mode of an outdoor spray cooling in the present disclosure. As shown in FIG. 4, a solar photovoltaic cell (namely, a solar panel 1) is installed above a bus waiting area 7 to provide power support for the controller 2, the environmental monitoring sensor (namely, the meteorological parameter detection sensor 3), the semiconductor refrigeration system 4 and the spray device 502 installed on one side of the bus waiting area 7. On cloudy days or at night, the electric energy stored in the storage battery 6 can be used for standby power supply. The water tank 501 of the spray cooling system 5 is connected with the city water pipe 8. The spray device 502 is installed above the water tank 501. The spray pipeline 503 leads out from the spray device 502, extends to the upper part of the bus waiting area 7, and sprays spray droplets through the spray nozzle 504. The controller 2 and the meteorological parameter detection sensor 3 are installed above the spray device 502.
100601 The environmental monitoring sensor 3 comprises a temperature and humidity sensor and a wind speed sensor which can capture the meteorological information of the current small regional thermal environment. Through information collection and processing, the controller 2 and the sensor 3 calculate and analyze the meteorological parameters, that is, the human thermal comfort index71B s calculated by the following formula: CITE * =(1 8t +32)-0.55(1 -f)* .8t -26) -3.2g), 100611 (1) 100621 Wherein CHB is human comfort index, t is air temperature and also called temperature ('C), is humidity and usually relative humidity (%), and V is wind speed (m/s).
100631 According to the grade standard of the human comfort index of China Meteorological Bureau, the human comfort index is divided into nine grades, such as chill, cold, cool, pleasantly cool, comfortable, warm, hot and burning hot grades, which correspond to the corresponding somatosensory states. The comfort grade (I is larger than 55 and less than or equal to 70) is
C
HE fifth grade (comfortable, most people feel comfortable), and the comfort grade ( / CHB is larger than 70 and less than or equal to 75) is the sixth grade (warm, most people feel comfortable). Therefore, the preset comfort threshold value "" is set to be larger than 55 and less than or equal to 75, and the preset overheating threshold value is set to be 75, that is, when I CHB is larger than 75, it is judged that the human thermal comfort index exceeds the preset threshold value, the controller 2 can give an electric signal, and the spray cooling system 5 is turned on to generate spray. Meanwhile, the semiconductor refrigeration system 4 is turned on to refrigerate, so that the initial water temperature of the spray is reduced, and the optimization effect of the spraying effect is achieved [0064] When the cooled initial droplets are sprayed out through the spray nozzle 504, the air temperature of the regional thermal environment can be gradually decreased, and the thermal sensation and comfort of human body can be improved. At the same time, the temperature and humidity sensor and the anemometer for capturing the meteorological parameters also collect new environmental information at all times, and the new environmental information is fed back to the controller 2 in real time. If after a period of spraying, the local temperature, relative humidity f and the wind speed V in the bus waiting area are substituted into the thermal comfort regression evaluation model (I), and the calculated values are controlled within the human thermal comfort range ( cHB is larger than 55 and less than or equal to 75), then the controller 2 can send an electric signal to the semiconductor refrigeration system 4 and the spray cooling system 5, and then spray and semiconductor refrigeration equipment are turned off After a period of downtime, the captured meteorological parameters can be continuously calculated and fed back to the controller 2. If the environmental temperature is increased again, the thermal comfort range of human body is repeatedly calculated. If the thermal comfort range of human body is not met, the controller 2 can transmit the electric signal to the semiconductor refrigeration equipment (namely, the semiconductor refrigeration system 4) and the spray equipment (namely, the spray cooling system 5) to issue an on command.
[0065] According to the outdoor spray cooling system and method based on solar photovoltaic power generation and semiconductor refrigeration technology, solar photovoltaic power generation is used for outputting and storing electric energy. The temperature, humidity and wind speed are monitored by using the meteorological parameter detection sensor. The captured meteorological parameters are calculated and analyzed to obtain the human thermal comfort index in the current environment, then whether the human thermal comfort index exceeds the preset threshold value or not is judged, and if so, the semiconductor refrigeration system and the spray cooling system are turned on for outdoor cooling. The meteorological parameters are continuously monitored, and if meteorological parameters meet the thermal comfort range of human body in the thermal environment, refrigeration and spraying are turned off. According to the system and the method, the regional thermal environment under the condition of ensuring the comfort of human body can be quickly improved. By using solar photovoltaic power generation and semiconductor refrigeration technology, energy consumption and environmental pollution are reduced, and the purposes of energy conservation and emission reduction are achieved.
100661 All embodiments in this specification are described in a progressive manner. Each embodiment focuses on differences from other embodiments. For the part that is the same or similar between different embodiments, reference may be made between the embodiments.
100671 Several examples are used for illustration of the principles and implementation methods of the present disclosure. The description of the embodiments is used to help illustrate the method and the core principles of the present disclosure; and meanwhile, those skilled in the art can make various modifications in terms of specific embodiments and scope of application in accordance with the teachings of the present disclosure. In conclusion, the content of this specification shall not be consulted as a limitation to the present disclosure.

Claims (8)

  1. WHAT IS CLAIMED IS: 1. An outdoor spray cooling system, comprising a solar cell panel, a controller, a meteorological parameter detection sensor, a semiconductor refrigeration system and a spray cooling system, wherein the solar cell panel, the controller, the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system are installed in an area to be cooled in an outdoor thermal environment; the meteorological parameter detection sensor comprises a temperature and humidity sensor and a wind speed sensor; the solar cell panel is respectively connected with the controller, the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system for power supply; and the controller is respectively connected with the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system.
  2. 2. The outdoor spray cooling system according to claim 1, wherein the spray cooling system comprises a water tank, a spray device, a spray pipeline and a spray nozzle; the water inlet of the water tank is connected with a city water pipe; the water outlet of the water tank is connected with the inlet of the spray device; the outlet of the spray device is connected with a spray pipeline; the spray nozzle is arranged on the spray pipeline; and the semiconductor refrigeration system is connected with the spray pipeline.
  3. 3. The outdoor spray cooling system according to claim 1, further comprising a storage battery, wherein the storage battery is connected with the solar cell panel and used for storing surplus electric energy generated by the solar cell panel; and the storage battery is further respectively connected with the controller, the meteorological parameter detection sensor, the semiconductor refrigeration system and the spray cooling system for standby power supply.
  4. 4. An outdoor spray cooling method, based on the outdoor spray cooling system according to any one of claims 1 to 3, comprising the following steps: using the solar cell panel to supply power for a controller, a meteorological parameter detection sensor, a semiconductor refrigeration system and a spray cooling system, respectively; receiving temperature, humidity and wind speed signals collected by the meteorological parameter detection sensor by the controller; calculating the human comfort index according to the temperature, humidity and wind speed signals by the controller; judging whether the human comfort index is greater than a preset overheating threshold value or not by the controller; if the human comfort index is greater than the preset overheating threshold value, turning on the semiconductor refrigeration system and the spray cooling system for outdoor cooling by the controller, and returning the step of judging whether the human comfort index is greater than a preset overheating threshold value or not; and if the human comfort index is less than or equal to the preset overheating threshold value, not turning on the semiconductor refrigeration system and the spray cooling system or stopping the operation of the semiconductor refrigeration system and the spray cooling system by the controller,
  5. 5. The outdoor spray cooling method according to claim 4, wherein the step of calculating the human comfort index according to the temperature, humidity and wind speed signals by the controller specifically comprises the following substeps: substituting the values of the temperature, humidity and wind speed signals into a thermal comfort regression evaluation model /cHR = 0.8t + 32)-0.550 _./). 0.8t_26)-3.2j by the controller to calculate the human comfort index / CHB; and I is temperature, f humidity and V is wind speed.
  6. 6. The outdoor spray cooling method according to claim 4, wherein in the step of judging whether the human comfort index is greater than a preset overheating threshold value or not by the controller, the preset overheating threshold value is 75.
  7. 7. The outdoor spray cooling method according to claim 4, wherein the step of turning on the semiconductor refrigeration system and the spray cooling system for outdoor cooling by the controller specifically comprises the following substeps: turning on the semiconductor refrigeration system and the spray cooling system by the controller, sucking water in the water tank into the spray pipeline through a high-pressure water pump by the spray device in the spray cooling system, refrigerating the water in the spray pipeline by the semiconductor refrigeration system, and spraying the cooled water from the spray nozzle for outdoor cooling.
  8. 8. The outdoor spray cooling method according to claim 4, further comprising the following step: using a storage battery to store surplus electric energy generated by the solar cell panel for standby power supply.
GB2300654.7A 2022-09-27 2023-01-17 Outdoor spray cooling system and method Active GB2622899B (en)

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JP5795722B2 (en) * 2011-05-26 2015-10-14 公立大学法人名古屋市立大学 Control method for spraying device for temperature drop, device therefor and multi-temperature drop system
CN104566705A (en) * 2013-10-19 2015-04-29 上海炯歌电子科技有限公司 Mist cooling equipment for solar electronic refrigeration
CN110131814B (en) * 2019-03-01 2021-04-20 中南大学 Method for automatically controlling outdoor spray cooling based on human body thermal sensation in outdoor environment
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US20030073401A1 (en) * 2001-10-16 2003-04-17 Gautney` James Cameron Outdoor fan system
CN209556438U (en) * 2018-08-02 2019-10-29 南京林业大学 A microclimate pavilion
CN112856642A (en) * 2021-03-18 2021-05-28 宁波工程学院 Portable spray refrigeration fan

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