CN113606685A - Evaporation air conditioning equipment and machine room air conditioning system - Google Patents
Evaporation air conditioning equipment and machine room air conditioning system Download PDFInfo
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- CN113606685A CN113606685A CN202110908517.0A CN202110908517A CN113606685A CN 113606685 A CN113606685 A CN 113606685A CN 202110908517 A CN202110908517 A CN 202110908517A CN 113606685 A CN113606685 A CN 113606685A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 77
- 238000001704 evaporation Methods 0.000 title claims abstract description 14
- 230000008020 evaporation Effects 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 238000007791 dehumidification Methods 0.000 claims abstract description 15
- 230000008929 regeneration Effects 0.000 claims description 31
- 238000011069 regeneration method Methods 0.000 claims description 31
- 239000007921 spray Substances 0.000 claims description 29
- 238000005507 spraying Methods 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000002274 desiccant Substances 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000003507 refrigerant Substances 0.000 claims description 5
- 230000008901 benefit Effects 0.000 claims description 4
- 239000013589 supplement Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 238000005265 energy consumption Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 230000001172 regenerating effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- 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
- F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
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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
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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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
- 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
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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
- 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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- 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
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
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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
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
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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
- 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
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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
- 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
- F24F3/1411—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 by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
- F24F3/1417—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 by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with liquid hygroscopic desiccants
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Central Air Conditioning (AREA)
Abstract
The invention relates to an evaporation air conditioning device and a machine room air conditioning system. The evaporative air-conditioning equipment comprises an evaporative cooler, an indoor air return pipeline and an indoor air supply pipeline which are communicated with the evaporative cooler, an outdoor air inlet pipeline and an outdoor air exhaust pipeline which are communicated with the evaporative cooler, and also comprises a dehumidifying device and a cooling device; the dehumidification device is arranged between the outdoor air inlet pipeline and the evaporative cooler; the dehumidification device can reduce the humidity of air entering the evaporative cooler from the outdoor air inlet pipeline; the cold compensating device is arranged between the evaporative cooler and the indoor air supply pipeline; the air that the device can enter into indoor supply-air duct from the evaporative cooler cools down. The evaporative air conditioning equipment provided by the invention can reduce the intervention of the cold compensating device less when the cooling requirement is realized, thereby reducing the energy required by the cooling requirement, improving the higher energy efficiency and saving more energy.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an evaporation air conditioning device and a machine room air conditioning system comprising the evaporation air conditioning device.
Background
With the arrival of the big data era, the communication industry rises rapidly, and all flowers are put together in the fields of 5G construction, cloud computing, Internet of things, artificial intelligence and the like. The data center is an important infrastructure in the communication industry, the energy consumption of the data center is increased rapidly along with the development of the communication industry, and according to statistics, the annual power consumption of the data center in 2015 is only 1.5% of the annual power consumption of the whole society. In terms of a data center, the operation of numerous electronic devices of the data center is accompanied by the generation of heat, about 40% of the energy consumption of the data center is the energy consumption of a cooling system, and the energy conservation of the cooling system is a powerful way for reducing the energy consumption of infrastructure in the communication industry.
In order to reduce the energy consumption of the cooling system of the data center, green energy-saving air-conditioning products using natural cold sources appear in the prior art, wherein the air-conditioning systems are evaporative cooling air-conditioning systems which are more common and reliable.
The existing evaporative cooling air conditioner generally consists of an indirect evaporative cooling system and a direct expansion type cold supplement system (DX cold supplement system). In winter and other conditions that the dry bulb temperature and the wet bulb temperature of outdoor air are low, the return air of a machine room of the data center can be cooled by independently depending on an indirect evaporative cooling system, and the return air is supplied into the machine room again after being cooled, so that the cooling requirement of the data center is met in a circulating and reciprocating manner; in summer and other conditions that the dry bulb temperature or the humidity temperature of outdoor air is high, the machine room is cooled by the DX cold supplement system basically and completely.
The structure and the scheme have certain problems that a DX (full Duplex switched Ethernet) cold supplement system is required to be started when the temperature of the outdoor air wet bulb is higher, so that the energy-saving performance of an evaporative cooling air conditioner product is insufficient, and the popularization and the use in high-temperature and high-humidity areas are limited.
Disclosure of Invention
The invention provides an evaporation air conditioning device and a machine room air conditioning system, and aims to solve the technical problem that a DX (full Duplex switched Ethernet) cold supplement system needs to be started when the wet bulb temperature of outdoor air is higher in the prior art, and the consumed energy is higher.
The invention provides evaporative air conditioning equipment, which comprises an evaporative cooler, an indoor air return pipeline and an indoor air supply pipeline which are communicated with the evaporative cooler, and an outdoor air inlet pipeline and an outdoor air exhaust pipeline which are communicated with the evaporative cooler, wherein the evaporative air conditioning equipment also comprises a dehumidifying device and a cooling device; the dehumidification device is arranged between the outdoor air inlet pipeline and the evaporative cooler; the dehumidification device can reduce the humidity of air entering the evaporative cooler from the outdoor air inlet pipeline; the cold compensating device is arranged between the evaporative cooler and the indoor air supply pipeline; the air that enters into indoor supply air duct from the evaporative cooler can be cooled down to the benefit cold charge device.
The dehumidification device is used for spraying a desiccant to the air entering the evaporative cooler from the outdoor air inlet pipeline so as to reduce the humidity of the air entering the evaporative cooler from the outdoor air inlet pipeline.
Wherein, the evaporation air-conditioning equipment also comprises a regeneration device; a first connecting pipeline is arranged between the regeneration device and the dehumidifying device and used for conveying the dehumidifying agent sprayed by the dehumidifying device into the regeneration device; the regeneration device can reduce moisture in the desiccant; and a second connecting pipeline is also arranged between the regeneration device and the dehumidifying device and is used for conveying the dehumidifying agent dried by the regeneration device into the dehumidifying device.
The regeneration device is arranged between the indoor air return pipeline and the evaporative cooler and is provided with a spraying mechanism, and the spraying mechanism is used for spraying a dehumidifying agent to air entering the evaporative cooler from the indoor air return pipeline.
Wherein, the regenerating unit comprises a heat exchanger, and the heat exchanger is arranged on the second connecting pipeline.
The cold compensating device comprises a compressor, a condenser, an expansion valve, an evaporator and a refrigerant pipeline connecting the compressor, the condenser, the expansion valve and the evaporator.
The evaporative air conditioning equipment further comprises a first fan, and the first fan is arranged between the indoor air return pipeline and the evaporative cooler.
The evaporation air conditioning equipment further comprises a second fan, and the second fan is arranged at the air outlet of the outdoor air exhaust pipeline.
The evaporative air conditioning equipment further comprises a spraying device, the spraying device comprises a water tank, a spraying pump and a nozzle, the water tank, the spraying pump and the nozzle are connected through pipelines, and the nozzle is used for spraying water in the evaporative cooler so as to reduce the temperature of air entering the indoor air supply pipeline through the evaporative cooler.
The invention provides a machine room air conditioning system which adopts the evaporative air conditioning equipment.
Compared with the prior art, the evaporative air conditioning equipment and the machine room air conditioning system provided by the embodiment of the invention have the following advantages:
the evaporative air conditioning equipment provided by the embodiment of the invention comprises an evaporative cooler and a dehumidifying device, wherein the dehumidifying device is arranged between an outdoor air inlet pipeline and the evaporative cooler; the dehumidification device can reduce the humidity of the air entering the evaporative cooler from the outdoor air inlet pipeline. According to the arrangement, the humidity of the outdoor air entering the evaporative cooler through the outdoor air inlet pipeline is reduced through the dehumidifying device under the condition that the wet bulb temperature of the outdoor air is high, the dehumidification device is used for exchanging heat with the gas entering the evaporative cooler from the indoor air return pipeline, the temperature of the gas entering the evaporative cooler from the indoor air return pipeline is reduced, the temperature of the part of the gas is reduced to be below a set value, and the requirement of introducing the indoor space to cool the indoor space can be met. Compared with the prior art, the evaporative air conditioning equipment provided by the invention can reduce the temperature of the gas entering the evaporative cooler from the indoor return air pipeline to a range meeting the requirement without depending on a cold supplement system under more scenes, particularly under the environment of high wet bulb temperature of outdoor air, and reduces the intervention of the cold supplement system, so that the energy consumption can be reduced under the condition of meeting the cooling requirement, and higher energy consumption and more energy conservation are realized.
The machine room air conditioning system provided by the embodiment of the invention adopts the evaporative air conditioning equipment, has the same technical effect as the evaporative air conditioning equipment, and is not repeated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an evaporative air conditioning apparatus in embodiment 1 of the present invention.
In the figure:
10-an evaporative cooler; 20-indoor return air duct; 21-indoor air supply pipeline; 22-a first fan; 30-outdoor air inlet pipeline; 31-outdoor exhaust duct; 32-a second fan; 40-a spraying device; 50-a dehumidifying device; 60-a cold compensation device; 70-a regeneration device;
400-a water tank; 401-spray pump; 402-a nozzle; 403-piping;
600-a compressor; 601-a condenser; 602-an expansion valve; 603-an evaporator;
71-a first connecting line; 72-second connecting line; 73-a spraying mechanism; 74-heat exchanger.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Embodiments of an evaporative air conditioning device and a machine room air conditioning system provided by the invention are described below with reference to the accompanying drawings.
(1) Embodiment 1 of evaporative air-conditioning apparatus
Referring to fig. 1, the evaporative air conditioning apparatus includes an evaporative cooler 10, an indoor return duct 20 and an indoor supply duct 21 communicating with the evaporative cooler 10, and an outdoor intake duct 30 and an outdoor discharge duct 31 communicating with the evaporative cooler 10. Wherein, the indoor return air duct 20 is used for extracting air from the cooled indoor space, and the indoor blowing duct 21 is used for inputting air to the cooled indoor space; an outdoor intake duct 30 is used to introduce air from the outside into the evaporative cooler 10, and an outdoor discharge duct 31 is used to discharge air to the outside. The indoor air return duct 20 and the indoor air supply duct 21 are communicated through the evaporative cooler 10, the outdoor air supply duct 30 and the outdoor air exhaust duct 31 are communicated through the evaporative cooler 10, and the indoor air return duct 20, the indoor air supply duct 21, the outdoor air supply duct 30 and the outdoor air exhaust duct 31 are independent from each other in the evaporative cooler 10, so that gas mixing does not occur. In other words, the air in indoor return air duct 20 entirely enters indoor blowing duct 21 and is fed into the cooled indoor space, and the air in outdoor inlet air duct 30 entirely enters outdoor discharge duct 31 and is discharged to the outdoor space.
The evaporative air conditioning apparatus further includes a first fan 22 and a second fan 32. The first fan 22 is disposed between the indoor return duct 20 and the evaporative cooler 10, and the first fan 22 draws air from the indoor space of the space, and sends the drawn air to the evaporative cooler 10 and further to the indoor supply duct 21. The second fan 32 is disposed at the air outlet of the outdoor air exhaust duct 31, and the second fan 32 is configured to discharge the air in the outdoor air exhaust duct 31, and in this process, the air in the outdoor air inlet duct 30 flows into the outdoor air exhaust duct 31, and the outdoor air at the air inlet of the outdoor air inlet duct 30 enters the outdoor air inlet duct 30.
With continued reference to fig. 1, the evaporative air conditioning apparatus further includes a spray device 40, a dehumidification device 50, and a cold supplement device 60.
The spraying device 40 includes a water tank 400, a spraying pump 401 and a nozzle 402, the water tank 400, the spraying pump 401 and the nozzle 402 are connected by a pipeline 403, and the nozzle 402 is used for spraying water in the evaporative cooler 10 to reduce the temperature of the air entering the indoor air supply duct 21 from the indoor air return duct 20 through the evaporative cooler 10. Specifically, the water tank 400 is disposed below the evaporative cooler 10, and a side of the water tank 400 facing the evaporative cooler 10, that is, an upper side of the water tank 400, has an open structure, so that water sprayed from the nozzle 402 in the evaporative cooler 10 can be collected, thereby recycling water and reducing water consumption. The spray nozzle 402 is located at the upper side of the evaporative cooler 10, and the spray pump 401 pumps the water in the water tank 400 to the spray nozzle 402 through the pipe 403, so that the spray nozzle 402 can spray water from the top to the bottom in the evaporative cooler 10 to cool the air flowing from the indoor return air duct 20 to the indoor supply air duct 21.
The dehumidifying device 50 is arranged between the outdoor air inlet pipeline 30 and the evaporative cooler 10; the dehumidifying device 50 can reduce the humidity of the air introduced into the evaporative cooler 10 from the outdoor intake duct 30. Specifically, the dehumidifying device 50 is used to spray dehumidifying agent to the air entering the evaporative cooler 10 from the outdoor air inlet duct 30, so as to reduce the humidity of the air entering the evaporative cooler 10 from the outdoor air inlet duct 30.
The cooling device 60 is arranged between the evaporative cooler 10 and the indoor air supply duct 21; the cooling device 60 can cool the air introduced into the indoor air supply duct 21 from the evaporative cooler 10. The cold-supplement device is a direct expansion cold-supplement system, namely a DX cold-supplement system. Specifically, the cooling device 60 includes a compressor 600, a condenser 601, an expansion valve 602, an evaporator 603, and a refrigerant pipeline connecting the compressor 600, the condenser 601, the expansion valve 602, and the evaporator 603. As can be seen from the above description and the accompanying drawings, the cooling device is a general refrigeration system or air conditioning system, and the structure and the operation principle thereof are known and will not be described herein.
The evaporative air conditioning apparatus further includes a regeneration device 70. A first connecting pipeline 71 is arranged between the regenerating device 70 and the dehumidifying device 50, and the first connecting pipeline 71 is used for conveying the dehumidifying agent sprayed by the dehumidifying device 50 into the regenerating device 70. The regeneration device 70 can reduce moisture in the desiccant. A second connecting pipeline 72 is further provided between the regenerating device 70 and the dehumidifying device 50, and the second connecting pipeline 72 is used for conveying the dehumidifying agent dried by the regenerating device 70 to the dehumidifying device 50. It can be understood that, in the dehumidifying apparatus 50, after the dehumidifying agent is sprayed to the air entering the evaporative cooler 10 through the outdoor air inlet duct 30, the moisture in the air is absorbed by the dehumidifying agent, the moisture content in the dehumidifying agent is increased, and the dehumidifying effect thereof is reduced or even lost in this state. In the present embodiment, the desiccant that has absorbed moisture in the air is collected and delivered to the regeneration device 70 through the first connection line 71. In the regeneration device 70, the moisture in the desiccant is reduced or even removed, so as to recover the dehumidification capability of the desiccant, and the desiccant recovering the dehumidification capability is conveyed to the dehumidification device 50 through the second connecting pipeline 72, so that the recycling of the desiccant is realized, and the amount of the required desiccant is reduced.
Specifically, the regeneration device 70 is disposed between the indoor return air duct 20 and the evaporative cooler 10, and the regeneration device 70 has a spraying mechanism 73, and the spraying mechanism 73 is used to spray a desiccant to the air that will enter the evaporative cooler 10 from the indoor return air duct 20. The arrangement described above allows the moisture contained in the desiccant sprayed by the spraying mechanism 73 to absorb the heat in the air entering the evaporative cooler 10 from the indoor return air duct 20, on the one hand precools the air entering the evaporative cooler 10, reduces the temperature of the air entering the evaporative cooler 10 from the indoor return air duct 20, and on the other hand evaporates the moisture contained in the desiccant by the absorbed heat, and also reduces or even removes the moisture in the desiccant, thereby recovering the dehumidifying capability of the desiccant.
In particular, the regeneration device 70 comprises a heat exchanger 74, the heat exchanger 74 being arranged on the second connecting line 72. The heat exchanger 74 can cool the desiccant in the second connecting pipeline 72, enhance the dehumidifying capability of the desiccant, and perform a certain cooling function while dehumidifying, thereby reducing the temperature of the air in the outdoor air inlet duct 30.
The operation principle and process of the evaporative air conditioning apparatus according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.
The evaporative air conditioning equipment in the embodiment of the invention has different working modes under different temperature and humidity scenes.
Specifically, when the outdoor air dry bulb temperature is low, for example, under the temperature condition in winter, the spray device 40, the dehumidification device 50, and the cold compensation device 60 do not operate, and only the first fan 22, the second fan 32, and the evaporative cooler 10 operate. The first fan 22, when operating, draws the air to be exhausted from the cooled indoor space into the indoor return duct 20 and sends the air to the evaporative cooler 10 and the indoor supply duct 21. The second fan 32, when operating, sends outdoor air into the outdoor intake duct 30 and sends the air to the evaporative cooler 10 and the outdoor exhaust duct 31. In the above process, the temperature of the air entering the evaporative cooler 10 from the indoor return air duct 20 is high, and the temperature of the outdoor air entering the evaporative cooler 10 from the outdoor air inlet duct 30 is low, in the evaporative cooler 10, the air entering from the indoor return air duct 20 exchanges heat with the space entering from the outdoor air inlet duct 30, after the heat exchange, the temperature of the air entering from the indoor return air duct 20 is reduced, and the temperature reduction range of the air entering from the indoor return air duct 20 is large due to the low temperature of the outdoor air, the cooled air meets the requirement of cooling the cooled indoor space, and the part of the air is sent into the indoor air supply duct 21 and further input into the indoor space for cooling and cooling the indoor space. After the heat exchange, the temperature of the air entering from the outdoor intake duct 30 rises, and the air enters the outdoor discharge duct 31 and is further discharged to the external space.
When the dry bulb temperature of the outdoor air is high and the wet bulb temperature is low, the spray device 40 is started to work. The high-temperature gas in the indoor return air duct 20 is input into the evaporative cooler 10, and the nozzle 402 of the spraying device 40 sprays water into the evaporative cooler 10 to exchange heat with the gas input from the indoor return air duct 20; meanwhile, the gas in the outdoor air inlet pipeline 30 is also input into the evaporative cooler 10, so that the water sprayed by the nozzle 402 is evaporated, heat is absorbed more quickly, the temperature of the gas input from the indoor air return pipeline 20 can be quickly reduced to be lower than a set temperature, the requirement of sending the gas into an indoor space for cooling is met, and then the part of the cooled gas enters the indoor air supply pipeline 21 and further enters the indoor space for cooling and cooling the indoor space. As in the previous mode, the air introduced from the outdoor intake duct 30 is still discharged to the external space through the outdoor discharge duct 31.
When the dry bulb temperature and the wet bulb temperature of the outdoor air are high, the spray device 40, the dehumidifying device 50, and the regenerating device 70 are activated. Before the higher-temperature gas in the indoor air return pipeline 20 enters the evaporative cooler 10, the higher-temperature gas firstly passes through the regeneration device 70, the spraying mechanism 73 in the regeneration device 70 sprays the dehumidifying agent to the gas in the indoor air return pipeline 20, and the sprayed dehumidifying agent can absorb the heat of the gas in the indoor air return pipeline 20 and pre-cool the gas in the indoor air return pipeline 20 before entering the evaporative cooler 10. Meanwhile, after the sprayed desiccant absorbs heat, moisture contained therein evaporates, thereby reducing or even eliminating the moisture contained therein. Then, the gas in the pre-cooled indoor return air duct 20 enters the evaporative cooler 10, and in the evaporative cooler 10, on the one hand, the spray nozzles 402 of the spray device 40 spray water to the gas, so as to exchange heat with the gas entering the evaporative cooler 10 from the indoor return air duct 20; meanwhile, the outside air enters the outdoor air inlet duct 30, passes through the dehumidifier 50 before entering the outdoor air inlet duct 30, and sprays a dehumidifier into the dehumidifier 50 to the outdoor air entering the outdoor air inlet duct 30, so that the sprayed dehumidifier can reduce moisture contained in the outdoor space, thereby reducing the humidity of the air entering the outdoor air inlet duct 30. The air in the outdoor air inlet pipeline 30 further enters the evaporative cooler 10, so that the water sprayed by the nozzles 402 of the spraying device 40 absorbs heat and evaporates in an accelerated manner, thereby quickening the reduction of the temperature of the gas entering the evaporative cooler 10 from the indoor air return pipeline 20, and enabling the temperature of the gas input from the indoor air return pipeline 20 to be rapidly reduced to be below a set temperature, so that the requirement of being capable of being sent into an indoor space for cooling is met, and then the partially cooled gas enters the indoor air supply pipeline 21 and further enters the indoor space to cool and cool the indoor space. As in the previous mode, the air introduced from the outdoor intake duct 30 is still discharged to the external space through the outdoor discharge duct 31.
When the dry bulb temperature and the wet bulb temperature of the outdoor air are higher, the cooling device 60 is activated when the temperature of the gas in the indoor return air duct 20 is not sufficiently lowered below the set temperature by the shower device 40, the dehumidifier 50, and the regenerator 70. On the basis that the spraying device 40, the dehumidifying device 50 and the regenerating device 70 operate according to the above modes, before the gas enters the indoor air supply duct 21 from the evaporative cooler 10, the temperature of the gas is not reduced below the set temperature, and the requirement of cooling the gas by introducing the gas into the indoor space cannot be met, at this time, the cooling device 60 further cools the part of the gas, and the part of the gas acts on the refrigerant in the refrigerant pipeline through the compressor 600, the condenser 601, the expansion valve 602 and the evaporator 603 to realize a refrigeration cycle, so as to cool the gas, and reduce the temperature of the gas to be introduced into the indoor air supply duct 21 below the set temperature, so as to meet the requirement of cooling the gas by introducing the gas into the indoor space.
As can be seen from the above description of the respective operation modes of the evaporative air-conditioning apparatus in the present embodiment, not only when the dry bulb temperature of the outdoor air is low, when the dry bulb temperature and the wet bulb temperature of the outdoor air are high and exceed a certain value, the outdoor air is introduced into the evaporative cooler 10 through the outdoor air inlet pipe 30 to exchange heat with the air in the indoor return air pipe 20, and the spray device 40 sprays water into the evaporative cooler 10, and the dehumidifying device 50 dehumidifies the outdoor air entering the outdoor air inlet duct 30, so that the temperature of the air delivered into the evaporative cooler 10 from the indoor return duct 20 can be reduced to below the set value, is supplied to the indoor space through the indoor air supply duct 21, and satisfies the requirement for cooling the indoor space. In the above process, the cooling device 60 does not need to be started, and the energy consumed for satisfying the cooling requirement is small. Therefore, compared with the existing evaporation air-conditioning equipment, the evaporation air-conditioning equipment provided by the embodiment has higher energy efficiency and is more energy-saving.
(2) Embodiment 2 of the evaporative air-conditioning apparatus
In the present embodiment, the evaporative air conditioning apparatus may not include the regeneration device 70, differing from the above-described embodiment 1. Compared with embodiment 1, the evaporative air conditioning apparatus according to the present embodiment cannot pre-cool the gas entering the evaporative cooler 10 from the indoor return air duct 20 by the regeneration device 70, and the entire cooling effect is not as good as that of embodiment 1, and the desiccant cannot be recycled, and therefore, it is necessary to constantly replenish the desiccant. However, compared with the existing evaporative air-conditioning equipment, the evaporative air-conditioning equipment in the embodiment still has the spraying device 40 and the dehumidifying device 50, and can still utilize the spraying device 40 and the dehumidifying device 50 to cool the air in the indoor return air duct 20 more under various operation modes, especially under the condition that the wet bulb temperature of the outdoor air is higher, so that the probability and the time for starting the cooling device 60 are reduced.
(3) Embodiment 3 of the evaporative air-conditioning apparatus
In the present embodiment, the evaporative air conditioning apparatus includes the regeneration device 70, which is different from the above-described embodiments 1 and 2, but the regeneration device 70 may not be provided between the indoor return air duct 20 and the evaporative cooler 10. Compared with embodiment 1, the evaporative air conditioning apparatus according to the present embodiment cannot pre-cool the gas entering the evaporative cooler 10 from the indoor return duct 20 by the regeneration device 70, and is inferior to embodiment 1 in the overall cooling effect. However, compared with the existing evaporative air-conditioning equipment, the evaporative air-conditioning equipment in the embodiment still has the spraying device 40 and the dehumidifying device 50, and can still utilize the spraying device 40 and the dehumidifying device 50 to cool the air in the indoor return air duct 20 more under various operation modes, especially under the condition that the wet bulb temperature of the outdoor air is higher, so that the probability and the time for starting the cooling device 60 are reduced.
In summary, the evaporative air conditioning apparatus provided by the present invention includes an evaporative cooler 10 and a dehumidifier 50, wherein the dehumidifier 50 is disposed between the outdoor air inlet duct 30 and the evaporative cooler 10; the dehumidifier device 50 is capable of reducing the humidity of the air entering the evaporative cooler 10 from the outdoor air inlet duct 30. According to the arrangement, under the condition that the wet bulb temperature of the outdoor air is high, the humidity of the outdoor air entering the evaporative cooler 10 through the outdoor air inlet pipeline 30 is reduced through the dehumidifying device 50, the outdoor air is used for exchanging heat with the air entering the evaporative cooler 10 from the indoor air return pipeline 20, the temperature of the air entering the evaporative cooler 10 from the indoor air return pipeline 20 is reduced, the temperature of the part of air is reduced to be below a set value, and the requirement of introducing the air into the indoor space to cool the indoor space can be met. Compared with the prior art, the evaporative air conditioning equipment provided by the invention can reduce the temperature of the gas entering the evaporative cooler 10 from the indoor return air pipeline 20 to a range meeting the requirement without depending on the cold supplement system 60 under more scenes, particularly under the environment with higher wet bulb temperature of outdoor air, and reduces the intervention of the cold supplement system 60, thereby reducing the energy consumption under the condition of meeting the cooling requirement, realizing higher energy consumption and saving more energy.
(4) Embodiments of air conditioning system for machine room
The invention also provides a machine room air conditioning system, in an embodiment of which, the evaporative air conditioning equipment described in the above embodiment of evaporative air conditioning equipment.
The air conditioning system of the machine room provided by the embodiment, which adopts the evaporative air conditioning equipment described in the above embodiment of the evaporative air conditioning equipment, has the same technical effect as the evaporative air conditioning equipment, and is not described again.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An evaporation air conditioning device comprises an evaporation cooler, an indoor air return pipeline and an indoor air supply pipeline which are communicated with the evaporation cooler, and an outdoor air inlet pipeline and an outdoor air exhaust pipeline which are communicated with the evaporation cooler, and is characterized by further comprising a dehumidifying device and a cooling device;
the dehumidification device is arranged between the outdoor air inlet pipeline and the evaporative cooler; the dehumidification device can reduce the humidity of air entering the evaporative cooler from the outdoor air inlet pipeline;
the cold compensating device is arranged between the evaporative cooler and the indoor air supply pipeline; the air that enters into indoor supply air duct from the evaporative cooler can be cooled down to the benefit cold charge device.
2. The evaporative air conditioning apparatus of claim 1, wherein the dehumidification device is adapted to spray desiccant onto air entering the evaporative cooler from the outdoor air inlet duct to reduce humidity in the air entering the evaporative cooler from the outdoor air inlet duct.
3. Evaporative air conditioning apparatus according to claim 2, further including regeneration means;
a first connecting pipeline is arranged between the regeneration device and the dehumidifying device and used for conveying the dehumidifying agent sprayed by the dehumidifying device into the regeneration device;
the regeneration device can reduce moisture in the desiccant;
and a second connecting pipeline is also arranged between the regeneration device and the dehumidifying device and is used for conveying the dehumidifying agent dried by the regeneration device into the dehumidifying device.
4. The evaporative air conditioning apparatus of claim 3, wherein the regeneration device is disposed between the indoor return air duct and the evaporative cooler, and the regeneration device has a spray mechanism for spraying desiccant onto air entering the evaporative cooler from the indoor return air duct.
5. An evaporative air conditioning apparatus according to claim 3 or claim 4, wherein the regeneration means comprises a heat exchanger, the heat exchanger being provided on the second connecting conduit.
6. The evaporative air conditioning apparatus of claim 1, wherein the cooling device comprises a compressor, a condenser, an expansion valve, an evaporator, and refrigerant lines connecting the compressor, the condenser, the expansion valve, and the evaporator.
7. The evaporative air conditioning apparatus of claim 1, further comprising a first fan disposed between the indoor return air duct and the evaporative cooler.
8. The evaporative air conditioning apparatus of claim 1, further comprising a second fan disposed at the air outlet of the outdoor air exhaust duct.
9. The evaporative air conditioning apparatus of claim 1, further comprising a spray device comprising a water tank, a spray pump and a spray nozzle, the water tank, the spray pump and the spray nozzle being connected by a pipe, the spray nozzle being adapted to spray water within the evaporative cooler to reduce the temperature of air passing through the evaporative cooler into the indoor supply air duct to the indoor return air duct.
10. A machine room air conditioning system, characterized in that the machine room air conditioning system adopts the evaporative air conditioning equipment as claimed in any one of claims 1 to 9.
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| CN115264662A (en) * | 2022-06-21 | 2022-11-01 | 同济大学 | Dehumidification air-conditioning system based on temperature-sensitive gel and indirect evaporative cooling and application method |
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| CN113606685B (en) | 2022-07-12 |
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