CN112400569A - Progressive efficient cooling and dehumidifying system and regulating and controlling method - Google Patents
Progressive efficient cooling and dehumidifying system and regulating and controlling method Download PDFInfo
- Publication number
- CN112400569A CN112400569A CN202011373468.7A CN202011373468A CN112400569A CN 112400569 A CN112400569 A CN 112400569A CN 202011373468 A CN202011373468 A CN 202011373468A CN 112400569 A CN112400569 A CN 112400569A
- Authority
- CN
- China
- Prior art keywords
- water
- wet curtain
- temperature
- coil
- humidity
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 73
- 230000000750 progressive effect Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000001276 controlling effect Effects 0.000 title claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 230000007613 environmental effect Effects 0.000 claims abstract description 17
- 238000007791 dehumidification Methods 0.000 claims description 17
- 238000009833 condensation Methods 0.000 claims description 13
- 241001465754 Metazoa Species 0.000 claims description 12
- 230000005494 condensation Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 12
- 230000012010 growth Effects 0.000 claims description 6
- 230000008635 plant growth Effects 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 241000283973 Oryctolagus cuniculus Species 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 1
- 240000003768 Solanum lycopersicum Species 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Images
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K1/00—Housing animals; Equipment therefor
- A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
- A01K1/0082—Water misting or cooling systems
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Zoology (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a progressive efficient cooling and dehumidifying system and a regulating and controlling method, belonging to the field of facility agricultural engineering environment control. The system faces to a high-temperature and high-humidity environment; wherein the fin coil is positioned behind the wet curtain system; a water supply pipe provided with a flowmeter is connected with a water inlet at the lower side of the fin coil pipe; the lower side of the fin coil is provided with a V-shaped diversion trench which is connected with a wet curtain water circulation system through a pipeline; the outside air enters the room through the wet curtain system and the fin coil system in sequence. The invention utilizes the fin coil system to further cool and dehumidify the air passing through the curtain; the condensed water of the fin coil enters the wet curtain water circulation system, so that the utilization rate of water resources is improved. According to the invention, the flow velocity of water flow in the fin coil is changed according to the environmental requirements, the operation energy consumption is reduced, and the cooling and dehumidifying efficiency of the system is improved.
Description
Technical Field
The invention belongs to the technical field of environmental control of facility agricultural engineering, and particularly relates to a progressive efficient cooling and dehumidifying system and a regulating and controlling method.
Background
The wet curtain is used as a mechanical cooling device with low cost and obvious cooling effect, and is widely applied to the fields of facility gardening and facility cultivation in China. The system consists of a wet curtain, a water supply and return system, a filtering device, a control system and the like; the operation of the system needs the cooperation of a fan to promote air to flow through the surface of the wet curtain; the principle of air cooling is to utilize the characteristic that the sensible heat in the flowing air is converted into latent heat when the water on the surface of the wet curtain is evaporated. The cooling range of the wet curtain fan cooling system is limited by the saturated vapor pressure of air, and the temperature of the dry bulb in the greenhouse can be only reduced to a level slightly higher than the temperature of the wet bulb in the greenhouse by 1-2 ℃. In actual operation, the evaporation cooling efficiency of the wet curtain is generally 60-80% under the influence of factors such as air flow rate and wet curtain heat exchange efficiency. The characteristic determines that the system has obvious temperature reduction effect in the dry climate environment in the north of China, but has slightly insufficient temperature reduction effect in the high-temperature and high-humidity environment in the south.
The effective cooling distance of the wet curtain fan system in the northern area is about 48m generally, and the effective cooling distance can be changed according to the actual temperature and humidity conditions in the southern area. Experimental studies of the Zhao Cheng Shanghai area at Tongji university showed that: when the outdoor air temperature rises by 1 ℃, the length of an effective cooling area is reduced by 7.8 m; when the relative humidity is increased by 1%, the effective cooling area of the greenhouse is shortened by 1 m; that is, under high temperature and high humidity conditions, only an effective cooling area of about 25m can be provided. The experiment of Zhaoshumei et al in the productive modern greenhouse of Beijing, Shanghai and Japanese Aizhi county shows that in the relatively dry Beijing area, the average cooling amplitude reaches 6.1 ℃, and the cooling effect is the best; in the Shanghai and Aizhi areas with relatively high temperature and high humidity, the average cooling amplitude is respectively 5.8 ℃ and 3.5 ℃, and is slightly reduced. Experiments of Liupeng and the like in Zhejiang and Chongqing rabbit farms show that when the temperature of the Chongqing wet curtain cooling rabbit hut is 27-40 ℃ outside the hut, the temperature of the interior of the hut can be stably maintained at 25-27 ℃, and when the temperature of the Hangzhou wet curtain cooling rabbit hut is 37-38 ℃ outside the hut, the temperature of the interior of the hut is 30-31 ℃. But for the high humidity problem brought by temperature reduction, besides a large amount of ventilation, no effective solution is provided; meanwhile, under the condition of high temperature and high humidity, the cooling effect is also influenced. Therefore, in many areas in the south, the cooling mode still needs to be improved, and the application effect is improved.
As for the dehumidification method, temperature rise dehumidification, ventilation dehumidification, condensation dehumidification, solution dehumidification, and the like are principally classified. The method for cooling and dehumidifying mainly comprises condensation dehumidifying and solution dehumidifying, wherein the dehumidifying amount is large. The condensation dehumidification is mainly used for household and industrial dehumidifiers, wherein moist air is pumped into the dehumidifier by a fan, moisture in the air is condensed into liquid water by a heat exchanger, and dry air is discharged out of the dehumidifier, so that the indoor humidity is reduced by circulation. The initial investment and the operation cost of the equipment are high, and the equipment is difficult to popularize in large-area greenhouse production. Zhaoqing and the like provide a dehumidification cooling system additionally arranged at the front end of the air inlet of a wet curtain, and 45 percent of calcium chloride solution is used as a desiccant, so that the relative humidity of air at an air outlet can be reduced from 80 percent to about 50 percent, and the cooling amplitude of a wet curtain fan system is improved by about 3 ℃; however, the dehumidifying agent needs a heat source for regeneration treatment, the daily operation management requirement of the system is high, and the dehumidifying agent is not popularized in actual production at present.
A heat exchanger is a device for transferring heat energy, which transfers part of the heat of a hot fluid to a cold fluid, and is also called a heat exchanger. Common heat exchangers include tubular heat exchangers, spiral plate heat exchangers, plate fin heat exchangers, tube fin heat exchangers, and the like. The finned coil has a large heat exchange surface area and can enhance heat transfer, so that the finned coil has the advantages of strong heat transfer capacity and compact structure and is widely applied.
In view of the above, the present invention intends to improve the application effect of the system under high temperature and high humidity conditions by combining the wet curtain fan system and the finned coil.
Disclosure of Invention
The invention aims to provide a progressive efficient cooling and dehumidifying system and a regulating and controlling method, and is characterized in that the progressive efficient cooling and dehumidifying system has the structure that: the upper side of the wet curtain 1 is connected with a wet curtain water inlet pipe 2, and the lower side of the wet curtain 1 is connected with a wet curtain water outlet pipe 3; the lower side of the fin coil pipe 5 is connected with a V-shaped diversion trench 6, and a condensation drain pipe 7 is connected with the lower side of the V-shaped diversion trench 6; the water inlet pipe 2, the water outlet pipe 3 and the condensation water outlet pipe 7 of the wet curtain system are all inserted into the water tank 4; the coil water inlet pipe 9 is connected to the lower part of the finned coil 5, and the coil water inlet pipe 9 is provided with a first water pump 11 for controlling the flow of water entering the finned coil 5 and a flow meter 10 for displaying the flow speed; the first water pump 11 is connected with a relay 16 arranged in a control box 17; the device is used for controlling and displaying the flow and the flow speed of water entering the finned coil 5; the coil pipe drain pipe 8 is connected to the upper part of the fin coil pipe 5, and water in the fin coil pipe 5 is drained through the coil pipe drain pipe 8; the second water pump 12 is communicated with the wet curtain 1 through a water inlet pipe 2; and is connected with a control box 17, and a pipeline control valve 13 is connected on one side surface of the water tank 4 and is connected with the control box 17; the fan 14 is mounted directly in front of and adjacent to the wet curtain system; a temperature and humidity sensor 15 is installed at a suitable location of the test environment, which temperature and humidity sensor 15 is used for real-time measurement of environmental parameters.
The V-shaped diversion trench 6 is a condensed water collecting device.
The finned coil is made of metal pipes with large heat conductivity coefficient, good heat transfer performance, high strength, small flow loss and strong corrosion resistance; the metal pipe is copper alloy, stainless steel or aluminum alloy.
A regulation and control method of a progressive efficient cooling and dehumidifying system is characterized in that when outside air sequentially passes through a wet curtain system and a fin coil system to enter a room; the temperature and humidity sensor 15 measures environmental parameters in real time, data are transmitted to the control box 17, the first water pump 11 and the second water pump 12 are opened or closed through the relay 16 according to data information processed by the control box, and the first water pump 11 independently controls the opening, closing and flow rate of the finned coil water supply system; the second water pump 12 independently controls the opening and closing of the wet curtain water supply system; according to the requirements of specific environment, time-sharing segmented regulation and control are realized, and the regulation and control method comprises the following steps:
(1) when the environmental temperature is in a low-temperature environment of 10-28 ℃, the growth state of plants or animals in the facility is good, and a cooling and dehumidifying means is not needed, the system is completely closed;
(2) when the ambient temperature is higher than 30 ℃ and the humidity is moderate, the high temperature is not suitable for the growth of plants or animals in the facility, but the humidity is in a comfortable range, only the wet curtain system is opened for cooling;
(3) when the environmental temperature and humidity are both in a high-temperature high-humidity condition and are not suitable for the growth of plants or animals in facilities, the wet curtain system and the fin coil system are opened to carry out progressive efficient cooling and dehumidification; meanwhile, the flow rate of water flowing into the fin coil can be changed by using the flow meter according to specific conditions of the environment, and when the temperature and the humidity of the environment are higher than the requirements of crop growth, the flow rate is increased, and the cooling and dehumidifying effects are improved.
The regulation and control system comprises: control box, temperature measurement humidity transducer, relay, pipeline control valve and flowmeter.
The invention has the beneficial effects that the progressive high-efficiency cooling and dehumidifying system provided by the invention faces to a high-temperature and high-humidity environment, the primary cooling is realized by the wet curtain system, and the secondary cooling and dehumidifying is realized by the fin coil system positioned at the air outlet of the wet curtain system, and the progressive high-efficiency cooling and dehumidifying system has the following characteristics:
(1) by utilizing the characteristics of wet air, a condensation dehumidification process is added after evaporation cooling, the temperature and the humidity of air at an air outlet of the whole system are reduced, the comprehensive performance of the system is improved, and the problem of insufficient cooling effect of the current wet curtain fan system in a high-temperature high-humidity environment is solved;
(2) the wet curtain cooling system and the fin coil system are separately and independently controlled, and the fin coil is provided with a flow control valve, so that graded regulation and control can be realized, and the environmental requirements of different weathers are met;
(3) the condensed water collecting device is combined with the wet curtain system, and water vapor is condensed on the surface of the fin coil pipe and then flows back to the water tank of the wet curtain system, so that the utilization efficiency of water resources is improved;
(4) the water discharged by the finned coil system is used for irrigating farmlands and increasing the temperature of crop roots, or is used for cultivation production management after disinfection treatment, so that the stress of animals and plants caused by low water temperature can be avoided.
Drawings
Fig. 1 is a structural diagram of a progressive efficient cooling and dehumidifying system facing a high-temperature and high-humidity environment.
FIG. 2 is a side view of the progressive high-efficiency cooling and dehumidifying system facing high-temperature and high-humidity environment.
The reference numbers in the figures illustrate: 1-wet curtain; 2-wet curtain water inlet pipe; 3-wet curtain drain pipe; 4-a water tank; 5-finned coil pipe; 6-V type guiding gutter; 7-condensation drain pipe; 8-coil pipe drain pipe; 9-coil pipe water inlet pipe; 10-a flow meter; 11-a first water pump; 12-a second water pump; 13-a pipeline control valve; 14-a fan; 15-temperature and humidity sensor; 16-a relay; 17-control box.
Detailed Description
The invention provides a progressive efficient cooling and dehumidifying system and a regulating method, wherein the progressive efficient cooling and dehumidifying system faces to a high-temperature high-humidity environment, the primary cooling is realized by a wet curtain system, and the secondary cooling and dehumidifying is realized by a fin coil system and a regulating system which are positioned at an air outlet of the wet curtain system; wherein, the regulation and control system includes: control box, temperature measurement humidity transducer, relay, pipeline control valve and flowmeter. The fin coil pipe condensate water collecting system is connected with the wet curtain water circulating system through a pipeline, and the negative pressure fan in the wet curtain provides pressure difference to form airflow, namely a progressive efficient cooling and dehumidifying system is formed; the cooling and dehumidifying effect is related to the flow velocity of water flow in the fin coil, and the relative humidity and the dew point temperature of the air are both increased after the air is cooled by the wet curtain mainly according to the characteristics of damp and hot air, at the moment, when the air subjected to primary cooling and humidifying passes through a fin coil system arranged at the air outlet of the wet curtain, the air is subjected to heat exchange with the surface of the fin coil through which low-temperature water is introduced, the dew point temperature is easily reached, and then gaseous water in the air is condensed into liquid water to be separated out into condensate water; the process of condensation and separation is a dehumidification process with equal moisture content, and the air temperature is further reduced as a result; the gaseous water is condensed into liquid water, and the liquid water enters a condensate water collecting device arranged at the lower part of the fin coil and enters a wet curtain water circulating system, so that the condensate water is recycled, and water resources are saved; in addition, circulating water in the fin coil pipe can absorb heat from hot and humid air in a condensation and dehumidification process, the water temperature can be increased, and the water can be used as water for facility agricultural production management. The structure and operation of the progressive high-efficiency cooling and dehumidifying system facing high-temperature and high-humidity environment will be described in detail with reference to fig. 1 and 2.
As shown in fig. 1 and 2. The structure of the progressive efficient cooling and dehumidifying system is as follows: the upper side of the wet curtain 1 is connected with a wet curtain water inlet pipe 2, and the lower side of the wet curtain 1 is connected with a wet curtain water outlet pipe 3; the lower side of the fin coil pipe 5 is connected with a V-shaped diversion trench 6, and a condensation drain pipe 7 is connected with the lower side of the V-shaped diversion trench 6; the water inlet pipe 2, the water outlet pipe 3 and the condensation water outlet pipe 7 of the wet curtain system are all inserted into the water tank 4; the coil water inlet pipe 9 is connected to the lower part of the finned coil 5, and the coil water inlet pipe 9 is provided with a first water pump 11 for controlling the flow of water entering the finned coil 5 and a flow meter 10 for displaying the flow speed; the first water pump 11 is connected with a relay 16 arranged in a control box 17; the device is used for controlling and displaying the flow and the flow speed of water entering the finned coil 5; the coil pipe drain pipe 8 is connected to the upper part of the fin coil pipe 5, and water in the fin coil pipe 5 is drained through the coil pipe drain pipe 8; the second water pump 12 is communicated with the wet curtain 1 through the wet curtain water inlet pipe 2; and is connected with a control box 17, and a pipeline control valve 13 is connected on one side surface of the water tank 4 and is connected with the control box 17; the fan 14 is mounted directly in front of and adjacent to the wet curtain system; a temperature and humidity sensor 15 is installed at a suitable location in the test environment, and the temperature and humidity sensor 15 is used for measuring environmental parameters in real time.
When the outside air sequentially passes through the wet curtain system and the fin coil system to enter the room; the temperature and humidity sensor 15 measures environmental parameters in real time, data are transmitted to the control box 17, the data information processed by the control box opens or closes the first water pump 11 and the first water pump 12 through the relay 16, and the first water pump 11 independently controls the opening and closing of the finned coil system and the flow rate; the second water pump 12 independently controls the opening and closing of the wet curtain system; according to the requirements of specific environment, time-sharing segmented regulation and control are realized, and the regulation and control method comprises the following steps:
(1) when the environmental temperature is in a low-temperature environment of 10-28 ℃, the growth state of plants or animals in the facility is good, and a cooling and dehumidifying means is not needed, the system is completely closed;
(2) when the ambient temperature is higher than 30 ℃ and the humidity is moderate, the high temperature is not suitable for the growth of plants or animals in the facility, but the humidity is in a comfortable range, only the wet curtain system is opened for cooling;
(3) when the environmental temperature and humidity are both in a high-temperature high-humidity condition and are not suitable for the growth of plants or animals in facilities, the wet curtain system and the fin coil system are opened to carry out progressive efficient cooling and dehumidification; meanwhile, the flow rate of water flowing into the fin coil can be changed by using the flow meter according to specific conditions of the environment, and when the temperature and the humidity of the environment are higher than the requirements of crop growth, the flow rate is increased, and the cooling and dehumidifying effects are improved.
Different plant animals have different requirements on temperature and humidity, and specific control targets and control ranges need to be set according to actual conditions. Taking the daytime environment regulation and control of the tomatoes cultivated in the multi-span greenhouse as an example, when the temperature in the facility is lower than 28 ℃, no cooling measures need to be taken, and the system is completely closed; when the temperature in the facility is higher than 28 ℃ and the relative humidity is lower than 75%, starting a wet curtain fan system; when the temperature in the facility is higher than 28 ℃ and the relative humidity is higher than 75%, the wet curtain system and the fin coil system are started simultaneously to carry out progressive efficient cooling and dehumidification. When the temperature in the facility is not higher than 30 ℃, the flow speed of the water flowing into the finned coil is set to be 1L min-1When the temperature in the facility is higher than 30 ℃, the flow speed of the water flowing into the finned coil is set to be 1.5L min-1。
The invention adds a fin coil system, a condensed water collecting device, a temperature and humidity measuring module and a control system in a wet curtain fan system. The progressive efficient cooling and dehumidifying system is divided into a wet curtain fan system and a fin coil system which are independent cooling systems, and each cooling system is provided with an independent water pump and can be independently operated and controlled; a fin coil system is arranged at an air outlet of the wet curtain, so that secondary cooling and dehumidification of the system are realized, and the problems that the cooling amplitude is limited in a high-temperature and high-humidity environment and the indoor environment humidity is too high in the original system are solved; a condensed water collecting device is arranged to enable condensed water to flow back to a water tank of the wet curtain system, so that the utilization efficiency of water in the system is improved; the temperature and humidity measurement module can monitor and collect environmental parameters in the facility in real time; the control system can control the on-off of the two water pumps according to the set and measured parameters.
The invention does not make specific requirements on the material and the size of the system component, and can determine the length and the pipe diameter according to the requirements. All pipes are not specified except for the requirement that the joint be able to withstand the necessary water pressure.
Claims (6)
1. The utility model provides a high-efficient cooling dehumidification system of progressive, its characterized in that, the structure of high-efficient cooling dehumidification system of progressive is: the upper side of the wet curtain (1) is connected with a wet curtain water inlet pipe (2), and the lower side of the wet curtain (1) is connected with a wet curtain water outlet pipe (3); the lower side of the fin coil (5) is connected with a V-shaped diversion trench (6), and a condensation drain pipe (7) is connected with the lower side of the V-shaped diversion trench (6); the water inlet pipe (2), the water outlet pipe (3) and the condensation water outlet pipe (7) of the wet curtain system are all inserted into the water tank (4); the coil water inlet pipe (9) is connected to the lower part of the fin coil (5), and a first water pump (11) for controlling the flow of water entering the fin coil (5) and a flow meter (10) for displaying the flow speed are arranged on the coil water inlet pipe (9); the first water pump (11) is connected with a relay (16) arranged in a control box (17); the device is used for controlling and displaying the flow and the flow speed of water entering the finned coil (5); the coil pipe drain pipe (8) is connected to the upper part of the fin coil pipe (5), and water in the fin coil pipe (5) is drained through the coil pipe drain pipe (8); the second water pump (12) is communicated with the wet curtain (1) through the wet curtain water inlet pipe (2); and is connected with a control box (17), a pipeline control valve (13) is connected on one side surface of the water tank (4) and is connected with the control box (17); the fan (14) is arranged right in front of the position near the wet curtain system; the temperature and humidity sensor (15) is installed at a proper position of a test environment, and the temperature and humidity sensor (15) is used for measuring environmental parameters in real time.
2. The progressive efficient cooling and dehumidifying system of claim 1 wherein the V-shaped guide groove (6) is a condensate water collecting device.
3. The progressive efficient cooling and dehumidifying system of claim 1 wherein the finned coil is made of metal tubing having a high thermal conductivity, good heat transfer performance, high strength, low flow loss, and high corrosion resistance; the metal pipe is copper alloy, stainless steel or aluminum alloy and the like.
4. A regulation and control method of a progressive efficient cooling and dehumidifying system is characterized in that when outside air sequentially passes through a wet curtain system and a fin coil system to enter a room; the temperature and humidity sensor (15) measures environmental parameters in real time, data are transmitted to the control box (17), the first water pump (11) and the second water pump (12) are opened or closed through the relay (16) according to data information processed by the control box, and the first water pump (11) independently controls the opening and closing and the flow rate of the finned coil water supply system; the second water pump (12) independently controls the opening and closing of the wet curtain water supply system; according to the requirements of specific environment, time-sharing segmented regulation and control are realized, and the regulation and control method comprises the following steps:
(1) when the environmental temperature is in a low-temperature environment of 10-28 ℃, the growth state of plants or animals in the facility is good, and a cooling and dehumidifying means is not needed, the system is completely closed;
(2) when the ambient temperature is higher than 28 ℃ and the humidity is moderate, the high temperature is not suitable for the growth of plants or animals in the facility, but the humidity is still in the comfortable range, only the wet curtain system is opened for cooling;
(3) when the environmental temperature and humidity are both in a high-temperature high-humidity condition and are not suitable for the growth of plants or animals in facilities, the wet curtain system and the fin coil system are opened to carry out progressive efficient cooling and dehumidification; meanwhile, the flow rate of water flowing into the finned coil can be changed by using a flow meter according to the specific environment condition; when the environmental temperature and humidity are higher than the growth needs of crops, the flow speed is increased, and the cooling and dehumidifying effects are improved; different plant animals have different requirements on temperature and humidity, and specific control targets and control ranges need to be set according to actual conditions.
5. The method for regulating the progressive efficient cooling and dehumidifying system of claim 4, wherein the regulating system comprises: control box, temperature measurement humidity transducer, relay, pipeline control valve and flowmeter.
6. The method for regulating and controlling a progressive efficient cooling and dehumidifying system as claimed in claim 4, wherein the wet curtain system and the coil system are independently controlled according to the specific environment setting target and the actual environment condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011373468.7A CN112400569A (en) | 2020-11-30 | 2020-11-30 | Progressive efficient cooling and dehumidifying system and regulating and controlling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011373468.7A CN112400569A (en) | 2020-11-30 | 2020-11-30 | Progressive efficient cooling and dehumidifying system and regulating and controlling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112400569A true CN112400569A (en) | 2021-02-26 |
Family
ID=74828869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011373468.7A Pending CN112400569A (en) | 2020-11-30 | 2020-11-30 | Progressive efficient cooling and dehumidifying system and regulating and controlling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112400569A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113875461A (en) * | 2021-05-13 | 2022-01-04 | 山东建筑大学 | Brackish water desalination system suitable for greenhouse in summer |
| CN114405046A (en) * | 2022-02-28 | 2022-04-29 | 中国科学院长春应用化学研究所 | Cooling device based on vacuum sublimation purification equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2886447Y (en) * | 2006-04-29 | 2007-04-04 | 东莞市大昌冷冻机电工程有限公司 | Evaporation pre-cooling type water chiller |
| CN203116203U (en) * | 2013-02-21 | 2013-08-07 | 浙江商业职业技术学院 | Air cooling air-conditioning system provided with condenser cooling supercooling device |
| CN103615916A (en) * | 2013-12-11 | 2014-03-05 | 杨公明 | Efficient air dehumidification and stepless temperature regulation device |
| CN204345834U (en) * | 2014-09-01 | 2015-05-20 | 广西钧富凰建筑环境技术有限公司 | A kind of water evaporation coupling earth source heat pump refrigeration system |
| CN204739703U (en) * | 2015-05-26 | 2015-11-04 | 浙江海洋学院 | Independent dehumidification adds full air ship air conditioning device of refrigerator cooling cascade regulation |
| CN105021058A (en) * | 2015-07-10 | 2015-11-04 | 上海酷仑冷却技术有限公司 | Energy-saving, water-saving and environment-friendly type technological adiabatic air cooler |
| CN105157168A (en) * | 2015-08-24 | 2015-12-16 | 合肥美的暖通设备有限公司 | Dehumidification control method for air conditioner, controller and air conditioner |
| CN211011722U (en) * | 2019-10-04 | 2020-07-14 | 云南师范大学 | Solar evaporative cooling air-conditioning system based on dehumidification heat exchanger |
| CN211233186U (en) * | 2019-09-17 | 2020-08-11 | 云南师范大学 | Evaporative refrigeration air-conditioning system based on solid adsorbent dehumidification |
-
2020
- 2020-11-30 CN CN202011373468.7A patent/CN112400569A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2886447Y (en) * | 2006-04-29 | 2007-04-04 | 东莞市大昌冷冻机电工程有限公司 | Evaporation pre-cooling type water chiller |
| CN203116203U (en) * | 2013-02-21 | 2013-08-07 | 浙江商业职业技术学院 | Air cooling air-conditioning system provided with condenser cooling supercooling device |
| CN103615916A (en) * | 2013-12-11 | 2014-03-05 | 杨公明 | Efficient air dehumidification and stepless temperature regulation device |
| CN204345834U (en) * | 2014-09-01 | 2015-05-20 | 广西钧富凰建筑环境技术有限公司 | A kind of water evaporation coupling earth source heat pump refrigeration system |
| CN204739703U (en) * | 2015-05-26 | 2015-11-04 | 浙江海洋学院 | Independent dehumidification adds full air ship air conditioning device of refrigerator cooling cascade regulation |
| CN105021058A (en) * | 2015-07-10 | 2015-11-04 | 上海酷仑冷却技术有限公司 | Energy-saving, water-saving and environment-friendly type technological adiabatic air cooler |
| CN105157168A (en) * | 2015-08-24 | 2015-12-16 | 合肥美的暖通设备有限公司 | Dehumidification control method for air conditioner, controller and air conditioner |
| CN211233186U (en) * | 2019-09-17 | 2020-08-11 | 云南师范大学 | Evaporative refrigeration air-conditioning system based on solid adsorbent dehumidification |
| CN211011722U (en) * | 2019-10-04 | 2020-07-14 | 云南师范大学 | Solar evaporative cooling air-conditioning system based on dehumidification heat exchanger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113875461A (en) * | 2021-05-13 | 2022-01-04 | 山东建筑大学 | Brackish water desalination system suitable for greenhouse in summer |
| CN113875461B (en) * | 2021-05-13 | 2023-02-14 | 山东建筑大学 | Brackish water desalination system suitable for greenhouse in summer |
| CN114405046A (en) * | 2022-02-28 | 2022-04-29 | 中国科学院长春应用化学研究所 | Cooling device based on vacuum sublimation purification equipment |
| CN114405046B (en) * | 2022-02-28 | 2023-08-29 | 中国科学院长春应用化学研究所 | Cooling device based on vacuum sublimation purification equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107307683A (en) | A kind of diffusion absorbing cultural relics display case constant humidity control system with self-watering function | |
| CN112400569A (en) | Progressive efficient cooling and dehumidifying system and regulating and controlling method | |
| CN201285120Y (en) | Cold air cooling type air conditioner and air conditioner with air cooler | |
| CN103510573B (en) | Refrigeration water making device and water making method through collection of water resource in air | |
| CN100472167C (en) | Circulation cooling system | |
| CN202254205U (en) | Direct expansion type air conditioning unit adopting tubular indirect evaporative cooling air side economizer | |
| CN104791932B (en) | Evaporation cooling with automatic control system-mechanical refrigeration joint air-conditioner set | |
| CN212930256U (en) | Humidification system and air conditioner | |
| CN204513626U (en) | A kind of thermostatic type solution dehumidification regeneration cycle system | |
| CN204272824U (en) | A kind of green house energy-saving temperature-control system | |
| CN112710038B (en) | Unpowered cooling and heat storage wall system and working method | |
| CN205372794U (en) | Refrigeration equipment | |
| CN112763250A (en) | Performance test system and test method for air-cooled evaporation composite type transverse flow closed cooling tower | |
| CN206959630U (en) | Save reclaiming type cooling tower | |
| CN103486672B (en) | A kind of air-conditioning system for crops culturing room | |
| CN215301911U (en) | Greenhouse dehumidifying device | |
| CN112189492B (en) | Indoor dehumidification system in low-temperature high-humidity environment | |
| CN207230814U (en) | A kind of air-conditioning system based on underground energy conversion | |
| CN204513851U (en) | A kind of earth source heat pump heating power actified solution dehumidifying unit | |
| CN117308227B (en) | Temperature and humidity regulating system based on radiation air conditioner | |
| CN218388985U (en) | Bidirectional jet constant-temperature dehumidification unit applied to greenhouse and breeding house | |
| CN220521458U (en) | Runner adsorption auxiliary steam compression refrigeration air water intake device | |
| CN218959619U (en) | Closed plant factory water-saving circulation system | |
| CN215912713U (en) | A environment control device for big-arch shelter | |
| CN220986885U (en) | Greenhouse system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |