CN111295083A - Indirect evaporative cooling air conditioning unit based on solar absorption refrigeration - Google Patents
Indirect evaporative cooling air conditioning unit based on solar absorption refrigeration Download PDFInfo
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- CN111295083A CN111295083A CN202010165685.0A CN202010165685A CN111295083A CN 111295083 A CN111295083 A CN 111295083A CN 202010165685 A CN202010165685 A CN 202010165685A CN 111295083 A CN111295083 A CN 111295083A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/208—Liquid cooling with phase change
- H05K7/20827—Liquid cooling with phase change within rooms for removing heat from cabinets, e.g. air conditioning devices
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
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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
- F24F5/0014—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 absorption or desorption
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
- F25B27/007—Machines, plants or systems, using particular sources of energy using solar energy in sorption type 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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Sustainable Development (AREA)
- Thermal Sciences (AREA)
- Sustainable Energy (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses an indirect evaporative cooling air conditioning unit based on solar absorption refrigeration, which comprises a unit shell, wherein a primary air inlet and a primary air outlet are respectively arranged on two opposite side walls of the unit shell, and an air filter a, an indirect evaporative cooling section, a cooling coil pipe combined unit, a humidifying section, a water baffle b and a primary air feeder are sequentially arranged in the unit shell according to the flowing direction of air after entering; a secondary air outlet is arranged on the unit shell corresponding to the top of the indirect evaporative cooling section, and a secondary air inlet is arranged on the unit shell side wall corresponding to one side surface of the indirect evaporative cooling section; the solar energy absorption type refrigeration module is also included; a control unit is also arranged below the primary air feeder. The air conditioning unit can greatly improve the energy efficiency of the air conditioning unit.
Description
Technical Field
The invention belongs to the technical field of air conditioning system equipment, and particularly relates to an indirect evaporative cooling air conditioning unit based on solar absorption refrigeration.
Background
Nowadays, with the rapid development of the internet and the arrival of the 5G era, the data center for carrying big data and storing and processing cloud computing is coming out all over the country and is exponentially and explosively growing. And the power of the single rack is rapidly improved, and 5G communication and the Internet of things drive the power utilization scale of the single rack to develop from the standard single rack power of 4kw to the scale of 20-30 kw or even higher. Therefore, the power consumption of the data center is rapidly increased, and the power consumption of the air conditioning system of the data center accounts for about 40% of the total power consumption. Aiming at such high energy consumption of the data center, the high-voltage PUE policy corresponding to the industrial and informatization department, the state office affair administration and the state energy source bureau provides high requirements for energy conservation of the air conditioning system of the data center, and the application of the indirect evaporative cooling technology in the data center at present becomes an energy-saving apparatus for reducing the PUE value. Meanwhile, for accelerating the popularization and application of advanced applicable technical products of a green data center, the energy saving and green development level of the data center is promoted to be continuously promoted, energy sources are urgently needed to be promoted, the utilization efficiency of resources and renewable energy sources is needed, and solar energy is inexhaustible green clean renewable energy sources, so that the indirect evaporative cooling technology and the solar renewable energy sources are better combined together under the condition of ensuring the normal use of data center server equipment, the maximum energy-saving potential is exerted, the energy consumption of an air conditioning system in the data center is reduced to the maximum extent, and the technical problem to be solved urgently is solved.
Disclosure of Invention
The invention aims to provide an indirect evaporative cooling air conditioning unit based on solar absorption refrigeration, which adopts the solar absorption refrigeration as an auxiliary cold source, can fully utilize solar energy to prepare chilled water under the condition of not needing a voltage-compression refrigeration device, and greatly improves the energy efficiency of the air conditioning unit.
The technical scheme adopted by the invention is that the indirect evaporative cooling air conditioning unit based on solar absorption refrigeration comprises a unit shell, wherein a primary air inlet and a primary air supply outlet are respectively arranged on two opposite side walls of the unit shell, and an air filter a, an indirect evaporative cooling section, a cooling coil combination unit, a humidifying section, a water baffle b and a primary air feeder are sequentially arranged in the unit shell according to the flowing direction of primary air after entering; a secondary air outlet is arranged on the unit shell corresponding to the top of the indirect evaporative cooling section, and secondary air inlets are arranged on two side walls of the unit shell corresponding to two opposite side surfaces of the indirect evaporative cooling section; the solar absorption type refrigeration module is connected with the cooling coil pipe combination unit through a freezing water pipe to form a circulation loop, and the freezing water pipe is also provided with a freezing water pump; the control unit is arranged below the primary air feeder and is respectively connected with the solar absorption type refrigeration module, the primary air feeder, the humidifying section, the chilled water pump, the cooling coil combined unit and the indirect evaporative cooling section.
The present invention is also characterized in that,
and a secondary air exhaust fan is arranged at the secondary air exhaust port and is connected with the control unit.
The indirect evaporative cooling section comprises a water baffle a, a water distributor, an indirect evaporative cooling heat exchange core body and a water collecting tank a which are sequentially arranged from top to bottom, and the water distributor is connected with the water collecting tank a through a water pipe a; the secondary air inlet is positioned on the side wall of the unit shell corresponding to the space between the indirect evaporative cooling heat exchange core body and the water collecting tank a, the water pipe a is provided with a water pump a, and the water pump a is connected with the control unit.
An air filter b is arranged at the secondary air exhaust outlet.
The cooling coil combination unit comprises two cooling coils which are arranged in a V shape and connected in parallel, an electric air valve is arranged between the two cooling coils and connected with the control unit, and the two cooling coils form a circulation loop with the solar absorption type refrigeration module through a freezing water pipe.
The solar absorption refrigeration module comprises an absorption refrigerator and a solar heat source device which are connected through a first water pipe and form a circulation loop, the absorption refrigerator and the two cooling coil pipes form the circulation loop through a freezing water pipe, and the absorption refrigerator and the solar heat source device are respectively connected with the control unit.
The absorption type refrigerating machine comprises a generator, a condenser, a throttle valve, an evaporator and an absorber which are sequentially connected, wherein the condenser is connected with the evaporator through a refrigerant pipe, the throttle valve is arranged on the refrigerant pipe, a solution heat exchanger is arranged between the generator and the absorber, and the generator, the solution heat exchanger and the absorber are connected through the solution pipe to form an absorbent circulation loop; a solution pump is arranged on a solution pipe in the direction that the liquid flows from the absorber to the heat exchanger, the evaporator is connected with the two cooling coils through a freezing water pipe to form a circulation loop, and the freezing water pump is arranged on the freezing water pipe in the direction that the liquid flows from the evaporator to the two cooling coils; the generator is connected with the solar heat source device through a first water pipe to form a circulation loop, and the solution pump is connected with the control unit.
The solar heat source device comprises a solar heat collector and a heat storage water tank, wherein the solar heat collector is connected with the heat storage water tank through a second water pipe to form a circulating loop; a second water pump is also arranged on a second water pipe in the direction that the liquid flows from the heat storage water tank to the solar heat collector; the heat storage water tank is connected with the generator through a first water pipe to form a circulation loop; a first water pump is also arranged on the first water pipe in the direction that the liquid flows from the generator to the heat storage water tank; an auxiliary heating device and a heating interface are arranged in the heat storage water tank; the first water pump and the second water pump are respectively connected with the control unit.
The humidifying section comprises a high-pressure spraying water distributor vertically arranged in the unit shell, the nozzle direction of the high-pressure spraying water distributor faces a water baffle b, a water collecting tank b is arranged below the high-pressure spraying water distributor, the high-pressure spraying water distributor is connected with the water collecting tank b through a water pipe b, a water pump b is further arranged on the water pipe b, and the water pump b is connected with the control unit.
The invention has the beneficial effects that:
(1) the invention relates to an indirect evaporative cooling air conditioning unit based on solar absorption refrigeration, which combines an indirect evaporative cooling technology with a solar absorption refrigeration technology, takes indirect evaporative cooling as a main part, takes solar absorption refrigeration as an auxiliary part, can fully utilize natural cold sources to carry out free refrigeration in transition seasons and cold winter, fully utilizes renewable energy solar energy as a heat source of an absorption refrigerator in hot summer, provides chilled water for a cooling coil, reduces the PUE value and the power consumption of a data center, and realizes the annual energy-saving operation of the data center.
(2) The indirect evaporative cooling air conditioning unit based on solar absorption refrigeration provided by the invention utilizes the solar heat source device to absorb solar energy, provides a heat source for the absorption refrigerator, and simultaneously provides clean and pollution-free energy for auxiliary buildings such as peripheral offices, operation and maintenance and dormitories and the like matched with a data center for heating, thereby greatly reducing the energy consumption of the data center and saving the energy.
(3) The invention relates to an indirect evaporative cooling air conditioning unit based on solar absorption refrigeration, which adopts a heat storage water tank device, the heat collected by a solar heat collector can be stored in the heat storage water tank firstly, the heat overflow is avoided, the waste is avoided, then the heat in the heat storage water tank is conveyed to an absorption refrigerator to be used as a heat source, and the possibility of utilizing solar energy exists only in the daytime, so that the heat source device does not directly utilize the heat in the solar heat collector, the heat is stored firstly through the heat storage water tank, and meanwhile, an auxiliary heating device is also used as redundancy, thereby ensuring the reliability and the safety of the operation of a data center.
Drawings
FIG. 1 is a schematic system structure diagram of an indirect evaporative cooling air conditioning unit based on solar absorption refrigeration;
fig. 2 is a schematic structural diagram of a solar absorption refrigeration module of an indirect evaporative cooling air conditioning unit based on solar absorption refrigeration.
In the figure, 1, a primary air inlet, 2, an air filter a, 3, an indirect evaporative cooling heat exchange core, 4, a water distributor, 5, a water baffle a, 6, a secondary air exhaust fan, 7, a secondary air exhaust outlet, 8, a cooling coil, 9, an electric air valve, 10, a high-pressure spray water distributor, 11, a water baffle b, 12, a primary air blower, 13, a primary air supply outlet, 14, a control unit, 15, a water collecting tank b, 16, a water pipe b, 17, a water pump b, 18, a water pump a, 19, a water pipe a, 20, a water collecting tank a, 21, an air filter b, 22, a secondary air inlet, 23, a freezing water pipe, 24, a freezing water pump, 000, a solar energy absorption refrigeration module, 100, an absorption refrigeration machine, 200, a solar heat source device, 101, an evaporator, 102, a throttle valve, 103, a condenser, 104, a generator, 105, a solution heat exchanger, 106. the system comprises a solution pump, 107, an absorber, 108, a refrigerant pipe, 109, a solution pipe, 201, a solar heat collector, 202, a heat storage water tank, 203, a heating interface, 204, an auxiliary heating device, 205, a first water pipe, 206, a first water pump, 207, a second water pipe, 208 and a second water pump.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to an indirect evaporative cooling air conditioning unit based on solar absorption refrigeration, which comprises a unit shell, wherein a primary air inlet 1 and a primary air supply outlet 13 are respectively arranged on two opposite side walls of the unit shell, and an air filter a2, an indirect evaporative cooling section, a cooling coil combination unit, a humidifying section, a water baffle b11 and a primary air feeder 12 are sequentially arranged in the unit shell according to the flowing direction of primary air after entering; a secondary air outlet 7 is arranged on the unit shell corresponding to the top of the indirect evaporative cooling section, and secondary air inlets 22 are arranged on two side walls of the unit shell corresponding to two opposite side surfaces of the indirect evaporative cooling section; the solar energy absorption type refrigeration system also comprises a solar energy absorption type refrigeration module 000, the solar energy absorption type refrigeration module is connected with the cooling coil pipe combination unit through a freezing water pipe 23 to form a circulation loop, and a freezing water pump 24 is also arranged on the freezing water pipe 23; a control unit 14 is further arranged below the primary air blower 12, and the control unit 14 is respectively connected with the solar absorption refrigeration module 000, the primary air blower 12, the humidification section, the chilled water pump 24, the cooling coil combination unit and the indirect evaporative cooling section.
The secondary air exhaust fan 6 is arranged at the secondary air exhaust outlet 7, and the secondary air exhaust fan 6 is connected with the control unit 14.
The indirect evaporative cooling section comprises a water baffle a5, a water distributor 4, an indirect evaporative cooling heat exchange core body 3 and a water collecting tank a20 which are sequentially arranged from top to bottom, and the water distributor 4 is connected with the water collecting tank a20 through a water pipe a 19; the secondary air inlet 22 is located on the corresponding side wall of the unit housing between the indirect evaporative cooling heat exchange core body 3 and the water collection tank a20, the water pipe a19 is provided with a water pump a18, and the water pump a18 is connected with the control unit 14.
The indirect evaporative cooling heat exchange core body 3 can be a plate-fin type, horizontal round tube or vertical round tube, and heat exchange is carried out through the indirect evaporative cooling heat exchange core body 3 by an indoor primary air dry channel and an outdoor secondary air wet channel;
the secondary air exhaust outlet 7 is provided with an air filter b21 cooling coil combined unit which comprises two cooling coils 8 which are arranged in a V shape and connected in parallel, an electric air valve 9 is arranged between the two cooling coils 8, the electric air valve 9 is used for controlling primary air passing through the cooling coils 8, the electric air valve 9 is connected with a control unit 14, and the two cooling coils 8 form a circulation loop with a solar absorption type refrigeration module 000 through a freezing water pipe 23.
The solar absorption refrigeration module 000 includes an absorption refrigerator 100 and a solar heat source device 200 connected by a first water pipe 205 and forming a circulation loop, the absorption refrigerator 100 forms a circulation loop with the two cooling coils 8 by a chilled water pipe 23, and the absorption refrigerator 100 and the solar heat source device 200 are respectively connected with the control unit 14.
The absorption refrigerator 100 comprises a generator 104, a condenser 103, a throttle valve 102, an evaporator 101 and an absorber 107 which are sequentially connected, wherein the condenser 103 is connected with the evaporator 101 through a refrigerant pipe 108, the throttle valve 102 is arranged on the refrigerant pipe 108, a solution heat exchanger 105 is arranged between the generator 104 and the absorber 107, the generator 104, the solution heat exchanger 105 and the absorber 107 are connected through a solution pipe 109 to form an absorbent circulation loop, a solution pipe 109 in the direction that liquid flows from the absorber 107 to the heat exchanger 105 is provided with a solution pump 106, the evaporator 101 is connected with two cooling coils 8 through a freezing water pipe 23 to form a circulation loop, and the freezing water pipe 23 in the direction that the liquid flows from the evaporator 101 to the two cooling coils 8 is provided with a freezing water pump 24; the generator 104 is connected to the solar heat source apparatus 200 through a first water pipe 205 to form a circulation loop, and the solution pump 106 is connected to the control unit 14.
The solar heat source device 200 comprises a solar heat collector 201 and a heat storage water tank 202, wherein the solar heat collector 201 is connected with the heat storage water tank 202 through a second water pipe 207 to form a circulation loop; a second water pump 208 is also arranged on the second water pipe 207 in the direction that the liquid flows from the heat storage water tank 202 to the solar heat collector 201; the hot water storage tank 202 is connected with the generator 104 through a first water pipe 205 to form a circulation loop; a first water pump 206 is also arranged on the first water pipe 205 in the direction of the liquid flowing from the generator 104 to the hot water storage tank 202; an auxiliary heating device 204 and a heating interface 203 are arranged in the heat storage water tank 202; the first water pump 206 and the second water pump 208 are connected to the control unit 14, respectively.
The auxiliary heating device 204 is an electric heater or other heating devices utilizing industrial waste heat and waste heat; the heat storage water tank 202 utilizes the solar energy received by the solar heat collector 201, and can provide domestic hot water for peripheral supporting facilities of the data center through the heating interface 203, so that the data center is clean and pollution-free, and the energy consumption is low.
The humidifying section comprises a high-pressure spraying water distributor 10 vertically arranged in the unit shell, the nozzle direction of the high-pressure spraying water distributor 10 faces a water baffle b11, a water collecting tank b15 is arranged below the high-pressure spraying water distributor 10, the high-pressure spraying water distributor 10 is connected with a water collecting tank b15 through a water pipe b16, a water pump b17 is further arranged on the water pipe b16, and a water pump b17 is connected with a control unit 14.
The invention relates to an indirect evaporative cooling air conditioning unit based on solar absorption refrigeration, which comprises the following working processes:
the working process of the indirect evaporative cooling module comprises the following steps:
according to the working process of primary air in a data processing machine room: indoor return air is purified and filtered from a primary air inlet 1 through an air filter a2, and then flows through a dry channel of an indirect evaporative cooling heat exchange core body 3, the indoor return air transfers heat to secondary air on the side of a wet channel, the primary air of the indoor return air is cooled, and then the secondary cooling is carried out through a cooling coil 8, and finally humidification is carried out at a humidification section, power provided by a primary air blower 12 is passed, and finally the primary air which is cooled and humidified is sent into a data processing machine room from a primary air supply outlet 13, so that the primary air is circulated, and the cooling effect of the data processing machine room is achieved.
According to the working process of the water distribution system: by the power provided by the water pump a18, the water in the water collecting tank a20 is conveyed to the water distributor 4 through the water pipe a19 for water distribution; the water distribution system of the humidifying section supplies power through a water pump b17 to convey water in the water collecting tank b15 to the high-pressure spray water distributor 10, humidifies the primary air of return air of the data processing machine room, and the humidifying section is opened according to the humidity requirement.
Working process of the solar absorption refrigeration module 000:
the solar heat collector 201 in the solar heat source device 200 transfers the absorbed solar energy to the heat storage water tank 202 through the second water pump 208, then the heat storage water tank 202 transfers the heat to the generator 104, and when the solar energy is sufficient, the heat storage water tank 202 can continuously store the residual heat after the heat transfer, so that the energy is saved; when the solar radiation is seriously insufficient at night, the auxiliary heating device 204 can be started to ensure that enough heat in the heat storage water tank 202 is transferred to the generator 104 through the first water pump 206, and the stability of the system is improved.
The heat in the hot water storage tank 202 is transferred to the generator 104 through the first water pump 206, because the original concentrated solution has a high boiling point, the refrigerant is evaporated first and flows into the condenser 103; the concentrated solution returns to the absorber 107 through the circulation loop to absorb the evaporated refrigerant, and the solution heat exchanger 105 enables the high-temperature concentrated solution flowing back to the absorber 107 from the generator 104 in the circulation loop to exchange heat with the low-temperature dilute solution flowing to the generator 104 from the absorber 107, so that the energy is effectively utilized, and the working efficiency is improved; in the condenser 103, the refrigerant condenses to release heat, and flows into the throttle valve 102; the throttle valve 102 creates a low pressure environment and the refrigerant has a reduced boiling point at low pressure, meaning that the refrigerant can evaporate at low temperature, then the refrigerant at low pressure flows into the evaporator 101 where it evaporates, thereby producing chilled water at low temperature for supply to the cooling coil 8 for cooling the return air primary air of the data processing room.
Claims (9)
1. An indirect evaporative cooling air conditioning unit based on solar absorption refrigeration is characterized by comprising a unit shell, wherein a primary air inlet (1) and a primary air supply outlet (13) are respectively arranged on two opposite side walls of the unit shell, and an air filter a (2), an indirect evaporative cooling section, a cooling coil combination unit, a humidifying section, a water baffle b (11) and a primary air feeder (12) are sequentially arranged in the unit shell according to the flowing direction of primary air after entering; a secondary air outlet (7) is arranged on the unit shell corresponding to the top of the indirect evaporative cooling section, and secondary air inlets (22) are arranged on two side walls of the unit shell corresponding to two opposite side surfaces of the indirect evaporative cooling section; the solar energy absorption type refrigeration system is characterized by further comprising a solar energy absorption type refrigeration module (000), wherein the solar energy absorption type refrigeration module is connected with the cooling coil pipe combination unit through a freezing water pipe (23) to form a circulation loop, and a freezing water pump (24) is further arranged on the freezing water pipe (23); the solar refrigeration system is characterized in that a control unit (14) is further arranged below the primary air feeder (12), and the control unit (14) is respectively connected with the solar absorption refrigeration module (000), the primary air feeder (12), the humidification section, the chilled water pump (24), the cooling coil combined unit and the indirect evaporative cooling section.
2. The indirect evaporative cooling air conditioning unit based on solar absorption refrigeration as recited in claim 1, wherein a secondary air exhaust fan (6) is arranged at the secondary air exhaust outlet (7), and the secondary air exhaust fan (6) is connected with the control unit (14).
3. The indirect evaporative cooling air conditioning unit based on solar absorption refrigeration as claimed in claim 1, wherein the indirect evaporative cooling section comprises a water baffle a (5), a water distributor (4), an indirect evaporative cooling heat exchange core (3) and a water collection tank a (20) which are sequentially arranged from top to bottom, and the water distributor (4) is connected with the water collection tank a (20) through a water pipe a (19); the secondary air inlet (22) is positioned on the corresponding side wall of the unit shell between the indirect evaporative cooling heat exchange core body (3) and the water collecting tank a (20), the water pipe a (19) is provided with a water pump a (18), and the water pump a (18) is connected with the control unit (14).
4. The indirect evaporative cooling air conditioning unit based on solar absorption refrigeration as claimed in claim 1, wherein an air filter b (21) is arranged at the secondary air exhaust outlet (7).
5. The indirect evaporative cooling air conditioning unit based on solar absorption refrigeration as claimed in claim 1, wherein the cooling coil assembly unit comprises two cooling coils (8) arranged in a V shape and connected in parallel, an electric air valve (9) is arranged between the two cooling coils (8), the electric air valve (9) is connected with the control unit (14), and the two cooling coils (8) form a circulation loop with the solar absorption refrigeration module (000) through a chilled water pipe (23).
6. The indirect evaporative cooling air conditioning unit based on solar absorption refrigeration as recited in claim 5, wherein the solar absorption refrigeration module (000) comprises an absorption refrigerator (100) and a solar heat source device (200) which are connected through a first water pipe (205) and form a circulation loop, the absorption refrigerator (100) forms a circulation loop with the two cooling coils (8) through a chilled water pipe (23), and the absorption refrigerator (100) and the solar heat source device (200) are respectively connected with the control unit (14).
7. The indirect evaporative cooling air conditioning unit based on solar absorption refrigeration as claimed in claim 6, wherein the absorption refrigeration machine (100) comprises a generator (104), a condenser (103), a throttle valve (102), an evaporator (101) and an absorber (107) which are sequentially connected, the condenser (103) is connected with the evaporator (101) through a refrigerant pipe (108), the throttle valve (102) is arranged on the refrigerant pipe (108), a solution heat exchanger (105) is arranged between the generator (104) and the absorber (107), and the generator (104), the solution heat exchanger (105) and the absorber (107) are connected through a solution pipe (109) to form an absorbent circulation loop; a solution pump (106) is arranged on a solution pipe (109) in the direction that the liquid flows from the absorber (107) to the heat exchanger (105), the evaporator (101) is connected with the two cooling coils (8) through a freezing water pipe (23) to form a circulation loop, and a freezing water pump (24) is arranged on the freezing water pipe (23) in the direction that the liquid flows from the evaporator (101) to the two cooling coils (8); the generator (104) is connected with the solar heat source device (200) through a first water pipe (205) to form a circulation loop, and the solution pump (106) is connected with the control unit (14).
8. The indirect evaporative cooling air conditioning unit based on solar absorption refrigeration as claimed in claim 7, wherein the solar heat source device (200) comprises a solar heat collector (201) and a heat storage water tank (202), and the solar heat collector (201) is connected with the heat storage water tank (202) through a second water pipe (207) to form a circulation loop; a second water pump (208) is also arranged on a second water pipe (207) in the direction that the liquid flows from the heat storage water tank (202) to the solar heat collector (201); the heat storage water tank (202) is connected with the generator (104) through a first water pipe (205) to form a circulation loop; a first water pump (206) is also arranged on a first water pipe (205) in the direction of the liquid flowing from the generator (104) to the heat storage water tank (202); an auxiliary heating device (204) and a heating interface (203) are arranged in the heat storage water tank (202); the first water pump (206) and the second water pump (208) are respectively connected with the control unit (14).
9. The indirect evaporative cooling air conditioning unit based on solar absorption refrigeration as claimed in claim 1, wherein the humidification section comprises a high-pressure spray water distributor (10) vertically arranged in the unit housing, the nozzle direction of the high-pressure spray water distributor (10) faces to a water baffle b (11), a water collection tank b (15) is arranged below the high-pressure spray water distributor (10), the high-pressure spray water distributor (10) is connected with the water collection tank b (15) through a water pipe b (16), a water pump b (17) is further arranged on the water pipe b (16), and the water pump b (17) is connected with the control unit (14).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115334829A (en) * | 2022-07-07 | 2022-11-11 | 苏州浪潮智能科技有限公司 | Low-carbon data center and operation method thereof |
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