CN103743012A - Evaporative cooling air-conditioning system, dispense with water tank for cool storage, utilizing wind and solar power generation - Google Patents

Evaporative cooling air-conditioning system, dispense with water tank for cool storage, utilizing wind and solar power generation Download PDF

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Publication number
CN103743012A
CN103743012A CN201310705318.5A CN201310705318A CN103743012A CN 103743012 A CN103743012 A CN 103743012A CN 201310705318 A CN201310705318 A CN 201310705318A CN 103743012 A CN103743012 A CN 103743012A
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water
evaporative cooling
wind
cold
conditioning
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CN201310705318.5A
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CN103743012B (en
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黄翔
刘佳莉
宣静雯
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Xinjiang Hua Yi Xin Energy Technology Co Ltd
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Xian Polytechnic University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/272Solar heating or cooling
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/20Solar thermal

Abstract

The invention discloses an evaporative cooling air-conditioning system, dispense with a water tank for cool storage, utilizing wind and solar power generation. The evaporative cooling air-conditioning system is formed by an evaporative cooling cold air/water unit, a wind and solar power generation system and a water curtain wall structure, wherein the water and wind power generation system is arranged on an external roof, and the water curtain wall structure is adopted for the side walls of a house. The evaporative cooling cold air/water unit is connected with the tail end in the house through a water feeding pipe and a water return pipe respectively. An air port is formed in the house, and the evaporative cooling cold air/water unit is communicated with the air port through an air duct. According to the evaporative cooling air-conditioning system, the evaporative cooling air-conditioning technology, the wind and solar power generation technology, the cool storage technology and the water curtain wall technology are combined, the peak-valley electricity price difference at night and in the day is utilized for forming cold air and cold water, the purposes of ventilation and cool storage at night are achieved, and therefore the evaporative cooling air-conditioning system is environmentally friendly and economical and saves energy.

Description

The Evaporative Cooling Air-conditioning System without water tank cold-storage of wind light mutual complementing power generation
Technical field
The invention belongs to air conditioner technical field, be specifically related to a kind of integrated Evaporative Cooling Air-conditioning System of evaporative cooling coil pipe, Water curtain wall and indoor end that comprises evaporative cooling cold-wind/cold-water unit, wind and solar hybrid generating system, embedded phase-change material for cold storage.
Background technology
In recent years, China's building energy consumption occupied total energy consumption ratio and rose to some extent, adopted traditional mechanical refrigeration because air-conditioning is most of, four large parts of its system operation, need to consume a large amount of electric energy, cause city to occur phenomenons such as " power cuts to limit consumption " summer, so air-conditioning is energy-conservation extremely urgent.Evaporative Cooling Air Conditioning technology, utilizes natural energy source " dry air " energy, uses the difference of air dry-bulb temperature and dew-point temperature as driving gesture, reduces the temperature of empty G&W.Evaporative cooling cold-wind/cold-water unit is output cold wind and cold water simultaneously, had both met the demand of indoor fresh air, simultaneously also for indoor end provides high temperature cold water, can realize water-air system, reduces the layout of indoor too much airduct.Conventional water cold accumulation air-conditioner is the electricity price between peak and valley that utilizes electrical network, utilize night handpiece Water Chilling Units to produce cold water cold-storage in pond, daytime, pond released cold quantity, guaranteed the normal operation of unit during load peak, it has little, reliable, the good refrigeration effect of investment, economic benefit high.But it need to take certain place and build cistern, certainly will take certain space.Now, phase change cold-storage technical development is quick, and phase-change material can have been realized the cold that absorbs certain high temperature cold water, and it is stored to certain hour, waits when needed released cold quantity.Modern building adopts glass curtain wall more, specious, but solar radiant energy that not only can hyperabsorption by curtain wall, has also increased outdoor generation and dazzle the problem of light simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of Evaporative Cooling Air-conditioning System without water tank cold-storage of wind light mutual complementing power generation, Evaporative Cooling Air Conditioning technology, water Cool Storage Technology, wind light mutual complementing power generation technology and Water curtain wall technology are combined, make full use of natural energy source, reduce environmental pollution, save the energy.
The technical solution adopted in the present invention is, the Evaporative Cooling Air-conditioning System without water tank cold-storage of wind light mutual complementing power generation, the Water curtain wall structure that this system is adopted by evaporative cooling cold-wind/cold-water unit, the wind and solar hybrid generating system that is arranged at external roof, house sidewall forms, evaporative cooling cold-wind/cold-water unit is respectively by sending water to be connected with the indoor end in house with water return pipeline, in house, be provided with air port, evaporative cooling cold-wind/cold-water unit is connected with air port by airduct.
Feature of the present invention is also,
The structure of evaporative cooling cold-wind/cold-water unit is: comprise two passages that are set up in parallel in unit,
In a passage: bottom is provided with header tank a, header tank a and machine unit shell outside are communicated with water compensating valve a and blowoff valve a, header tank a top, be disposed with indirect evaporation cooling heat exchanger, filler a, water-locator a, water fender a and exhaust blower a from top to bottom, header tank a is communicated with water-locator a by pipeline, water circulating pump a, on the machine unit shell wall corresponding with indirect evaporation cooling heat exchanger, be provided with fresh wind port, between this fresh wind port and indirect evaporation cooling heat exchanger, be provided with filter;
In another passage: bottom is provided with header tank b, header tank b and machine unit shell outside are communicated with water compensating valve b and blowoff valve b, header tank b top, be disposed with evaporative cooling coil pipe, filler b, water-locator b, water fender b and exhaust blower b from top to bottom, header tank b is communicated with water-locator b by pipeline, water circulating pump b, on housing wall between header tank b and evaporative cooling coil pipe, be provided with air outlet, in this air outlet, be provided with pressure fan and water fender c;
Evaporative cooling coil pipe is respectively by sending water to be connected with the indoor end in house with water return pipeline, and air outlet is connected with air port by airduct.
Indirect evaporation cooling heat exchanger adopts plate-fin, tubular type or dew point formula indirect evaporation cooling heat exchanger.
Filler a and filler b adopt papery, metal, porous ceramics or PVC material.
Exhaust blower a, exhaust blower b and pressure fan adopt frequency conversion fan.
Water circulating pump a and water circulating pump b adopt frequency conversion type.
Evaporative cooling coil pipe is embedded with phase-change material for cold storage.
Water curtain wall structure is comprised of glass curtain wall interior wall and glass curtain wall exterior wall separately, between inner, external wall, form a cavity, the bottom of this cavity is provided with header tank c, and the top of this cavity is provided with water distributor near glass curtain wall exterior wall place, is evenly arranged at intervals with multiple water distributing pores on this water distributor.
The structure of wind and solar hybrid generating system, comprises wind-driven generator, and wind-driven generator is connected with photovoltaic generation plate, wind-force complementary controller respectively, and photovoltaic generation plate is connected with wind-force complementary controller, battery, inverter and consumer successively.
Indoor end is dry-type fan coil or capillary radiant tube.
Evaporative Cooling Air-conditioning System of the present invention has the following advantages:
(1) the embedded phase-change material for cold storage of enclosed cooling coil in Evaporative Cooling Air-conditioning System of the present invention, can realize cold water and produce with water cold-storage integratedly, without water storage box/pond is set in addition, has simple in structure, space-saving feature.
(2) Evaporative Cooling Air-conditioning System of the present invention, utilizes electricity price peak valley price difference, produces cold water, and cold is stored in the embedded phase-change material for cold storage of enclosed evaporative cooling coil pipe, and daytime, released cold quantity, had Utilizing Energy Sources in Reason, energy-conservation and economic feature.
(3) Evaporative Cooling Air-conditioning System of the present invention, utilizes electricity price peak-valley difference, produces cold wind, can realize and ventilating night, takes away the indoor heat retaining, and reduces the air conditioner load on daytime, thereby reaches energy-conservation object.
(4) cold water that Evaporative Cooling Air-conditioning System of the present invention is produced, first passes into indoor end, return air heat in absorption chamber, then pass in the water-locator of Water curtain wall, increased the temperature difference of backwater and water supply, reduce water supply flow.
(5) Water curtain wall in Evaporative Cooling Air-conditioning System of the present invention, has stopped the heat of outdoor solar radiant energy to indoor transmission, also reduces the dazzle light of glass curtain wall to indoor generation simultaneously, not only attractive in appearance, and can be energy-conservation.
(6) evenly punching on the water-locator in Evaporative Cooling Air-conditioning System Water curtain wall of the present invention, water distributing pore is attached at glass curtain wall exterior wall, and water is fallen along metope, and shaded effects are obvious, reducing noise.
(7) the present invention utilizes wind and solar hybrid generating system power supply, can provide needed energy consumption for the water pump of Evaporative Cooling Air Conditioning unit and blower fan etc., simultaneously by unnecessary electrical power storage in battery, the mutual auxiliary power generation of wind-power electricity generation and photovoltaic generation, guarantee to use continuously system run all right under weather rough sledding.
Accompanying drawing explanation
Fig. 1 is the structural representation of Evaporative Cooling Air-conditioning System of the present invention;
Fig. 2 is the structural representation of evaporative cooling cold-wind/cold-water unit in Evaporative Cooling Air-conditioning System of the present invention;
Fig. 3 is the structural representation of Water curtain wall in Evaporative Cooling Air-conditioning System of the present invention;
Fig. 4 is the cross sectional representation of the evaporative cooling coil pipe of embedded phase-change material for cold storage in Evaporative Cooling Air-conditioning System of the present invention;
Fig. 5 is the structural representation of wind and solar hybrid generating system in Evaporative Cooling Air-conditioning System of the present invention.
In figure, A. evaporative cooling cold-wind/cold-water unit, B. wind and solar hybrid generating system, C. indoor end, D. air port, E. Water curtain wall, 1. filter, 2. indirect evaporation cooling heat exchanger, 3. filler a, 4. water-locator a, 5. water fender a, 6. exhaust blower a, 7. exhaust blower b, 8. water fender b, 9. water-locator b, 10. filler b, 11. evaporative cooling coil pipes, 12. pressure fans, 13. water fender c, 14. water compensating valve a, 15. header tank a, 16. water circulating pump a, 17. blowoff valve a, 18. header tank b, 19. water circulating pump b, 20. water compensating valve b, 21. blowoff valve b, 22. water distributors, 23. water distributing pores, 24. glass curtain wall interior walls, 25. glass curtain wall exterior walls, 26. header tank c, 27. consumers, 28. phase-change material for cold storage, 29. wind turbine generators, 30. photovoltaic generation plates, 31. wind-force complementary controllers, 32. batteries, 33. inverters.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The Evaporative Cooling Air-conditioning System without water tank cold-storage of wind light mutual complementing power generation of the present invention, structure as shown in Figure 1, the Water curtain wall E structure being adopted by evaporative cooling cold-wind/cold-water unit A, the wind and solar hybrid generating system B that is arranged at external roof, house sidewall forms, evaporative cooling cold-wind/cold-water unit A is respectively by sending water to be connected with the indoor end C in house with water return pipeline, air port D is set in house, and evaporative cooling cold-wind/cold-water unit A is connected with air port D by airduct.
The structure of evaporative cooling cold-wind/cold-water unit A is: comprise two passages that are set up in parallel in unit, its structure as shown in Figure 2.
In a passage: bottom arranges header tank a15, header tank a15 and outside water compensating valve a14 and the blowoff valve a17 of being communicated with of machine unit shell, header tank a15 top, be disposed with indirect evaporation cooling heat exchanger 2, filler a3, water-locator a4, water fender a5 and exhaust blower a6 from top to bottom, header tank a15 is communicated with water-locator a4 by pipeline, water circulating pump a16, on the machine unit shell wall corresponding with indirect evaporation cooling heat exchanger 2, be provided with fresh wind port, between this fresh wind port and indirect evaporation cooling heat exchanger 2, filter 1 be set.
In another passage: bottom is provided with header tank b18, header tank b18 and machine unit shell outside are communicated with water compensating valve b20 and blowoff valve b21, header tank b18 top, be disposed with evaporative cooling coil pipe 11, filler b10, water-locator b9, water fender b8 and exhaust blower b7 from top to bottom, header tank b18 is communicated with water-locator b9 by pipeline, water circulating pump b19, on housing wall between header tank b18 and evaporative cooling coil pipe 11, be provided with air outlet, in this air outlet, be provided with pressure fan 12 and water fender c13.
Evaporative cooling coil pipe 11 is respectively by sending water to be connected with the indoor end C in house with water return pipeline, and air outlet is connected with air port D by airduct.
Indirect evaporation cooling heat exchanger 2 adopts plate-fin, tubular type or dew point formula indirect evaporation cooling heat exchanger.
Filler a3 and filler b10 adopt the multiple materials such as papery, metal, porous ceramics, PVC.
Exhaust blower a6, exhaust blower b7 and pressure fan 12 adopt frequency conversion fan, and water circulating pump a16 and water circulating pump b19 adopt frequency conversion type, by controlling, realize energy-conservation.
Evaporative cooling coil pipe 11 is embedded with phase-change material for cold storage 28, and structure is as Fig. 4.
The structure of Water curtain wall E is comprised of glass curtain wall interior wall 24 and glass curtain wall exterior wall 25 separately, between inner, external wall, form a cavity, as shown in Figure 3, the bottom of this cavity is provided with header tank c26, the top of this cavity is provided with water distributor 22 near glass curtain wall exterior wall 25 places, is evenly arranged at intervals with multiple water distributing pores 23 on this water distributor 22.
The structure of wind and solar hybrid generating system B as shown in Figure 5, comprise wind-driven generator 29, wind-driven generator 29 is connected with photovoltaic generation plate 30, wind-force complementary controller 31 respectively, and photovoltaic generation plate 30 is connected with wind-force complementary controller 31, battery 32, inverter 33 and consumer 27 successively.
Wind/light complementation controller 31, major function makes solar energy and wind power generation system all the time near the power peak in electricity generation system, to obtain peak power; Inverter 33, major function is by the converting direct-current power into alternating-current power of battery, can be divided into auto-excitation type vibration inversion and separated exciting vibration inversion; Battery 32, converts solar energy and wind energy to assembly that direct current energy stores.
Indoor end C can adopt dry-type fan coil and capillary radiant tube etc.In dry-type fan coil, pass into high temperature cold water, without condensate pipe is set, prevent growing of condensed water leakage-proof and bacterium; Capillary radiant tube, passes into the high temperature cold water of producing, waste heat in absorption chamber.
Air port D, can send into a certain amount of new wind to indoor.
The course of work of air-conditioning system of the present invention can be divided into two kinds of patterns:
Night cold-storage
Open evaporative cooling cold-wind/cold-water unit A, utilize electricity price between peak and valley, produce cold wind and cold water, the embedded phase-change material for cold storage 28 of evaporative cooling coil pipe 11, can store the cold of producing.The cold wind of producing passes into indoor, realizes and ventilating night, reduces indoor load on daytime.
Release cold daytime
Cool storage material 28 starts released cold quantity, the high temperature cold water of producing is passed into indoor end, waste heat in absorption chamber, pass in the water distributor 22 in Water curtain wall E, high temperature cold water flows down along the exterior wall of curtain wall equably again, at exterior wall, forms one deck water curtain, can reduce solar radiation can be to indoor transmission, also reduced the generation of outdoor dazzle, the water flowing down has dropped on the water tank that below arranges simultaneously, getting back in unit.
Evaporative cooling on daytime cold-wind/cold-water unit can be opened, and has supplemented the deficiency of releasing cold.
Evaporative Cooling Air-conditioning System of the present invention, utilizes natural wind energy and optical energy power, provides evaporative cooling cold air conditioning system to move needed energy consumption.Evaporative cooling cold-wind/cold-water unit utilizes electricity price between peak and valley, at night, produce cold wind and cold water, due to the evaporative cooling coil pipe of the embedded phase-change material for cold storage arranging, having realized cold water produces with cold-storage integrated, the cold water that can directly evaporative cooling be produced, store, daytime released cold quantity, for the water distributor of indoor end and Water curtain wall provides high temperature cold water; The cold wind of producing, can, to room ventilation, reduce indoor load on daytime night.

Claims (10)

1. the Evaporative Cooling Air-conditioning System without water tank cold-storage of wind light mutual complementing power generation, it is characterized in that, Water curtain wall (E) structure that this system is adopted by evaporative cooling cold-wind/cold-water unit (A), the wind and solar hybrid generating system (B) that is arranged at external roof, house sidewall forms, described evaporative cooling cold-wind/cold-water unit (A) is respectively by sending water to be connected with the indoor end (C) in house with water return pipeline, in house, be provided with air port (D), described evaporative cooling cold-wind/cold-water unit (A) is connected with air port (D) by airduct.
2. according to Evaporative Cooling Air-conditioning System claimed in claim 1, it is characterized in that, the structure of described evaporative cooling cold-wind/cold-water unit (A) is: comprise two passages that are set up in parallel in unit,
In a passage: bottom is provided with header tank a(15), header tank a(15) be communicated with water compensating valve a(14 with machine unit shell outside) and blowoff valve a(17), header tank a(15) top, be disposed with from top to bottom indirect evaporation cooling heat exchanger (2), filler a(3), water-locator a(4), water fender a(5) and exhaust blower a(6), described header tank a(15) pass through pipeline, water circulating pump a(16) with water-locator a(4) be communicated with, on the machine unit shell wall corresponding with described indirect evaporation cooling heat exchanger (2), be provided with fresh wind port, between this fresh wind port and indirect evaporation cooling heat exchanger (2), be provided with filter (1),
In another passage: bottom is provided with header tank b(18), header tank b(18) be communicated with water compensating valve b(20 with machine unit shell outside) and blowoff valve b(21), header tank b(18) top, be disposed with from top to bottom evaporative cooling coil pipe (11), filler b(10), water-locator b(9), water fender b(8) and exhaust blower b(7), described header tank b(18) pass through pipeline, water circulating pump b(19) with water-locator b(9) be communicated with, described header tank b(18) and evaporative cooling coil pipe (11) between housing wall on be provided with air outlet, in this air outlet, be provided with pressure fan (12) and water fender c(13),
Described evaporative cooling coil pipe (11) is respectively by sending water to be connected with the indoor end (C) in house with water return pipeline, and described air outlet is connected with air port (D) by airduct.
3. according to Evaporative Cooling Air-conditioning System claimed in claim 2, it is characterized in that, described indirect evaporation cooling heat exchanger (2) adopts plate-fin, tubular type or dew point formula indirect evaporation cooling heat exchanger.
4. according to Evaporative Cooling Air-conditioning System claimed in claim 2, it is characterized in that described filler a(3) and filler b(10) papery, metal, porous ceramics or PVC material adopted.
5. according to Evaporative Cooling Air-conditioning System claimed in claim 2, it is characterized in that described exhaust blower a(6), exhaust blower b(7) and pressure fan (12) adopt frequency conversion fan.
6. according to Evaporative Cooling Air-conditioning System claimed in claim 2, it is characterized in that described water circulating pump a(16) and water circulating pump b(19) employing frequency conversion type.
7. according to Evaporative Cooling Air-conditioning System claimed in claim 2, it is characterized in that, described evaporative cooling coil pipe (11) is embedded with phase-change material for cold storage (28).
8. according to the Evaporative Cooling Air-conditioning System described in claim 1 or 2, it is characterized in that, described Water curtain wall (E) structure is comprised of glass curtain wall interior wall (24) and glass curtain wall exterior wall (25) separately, between inner, external wall, form a cavity, the bottom of this cavity is provided with header tank c(26), water distributor (22) is located to be provided with near glass curtain wall exterior wall (25) in the top of this cavity, is evenly arranged at intervals with multiple water distributing pores (23) on this water distributor (22).
9. according to the Evaporative Cooling Air-conditioning System described in claim 1 or 2, it is characterized in that, the structure of described wind and solar hybrid generating system (B), comprise wind-driven generator (29), wind-driven generator (29) is connected with photovoltaic generation plate (30), wind-force complementary controller (31) respectively, and photovoltaic generation plate (30) is connected with wind-force complementary controller (31), battery (32), inverter (33) and consumer (27) successively.
10. according to the Evaporative Cooling Air-conditioning System described in claim 1 or 2, its feature is, described indoor end (C) is dry-type fan coil or capillary radiant tube.
CN201310705318.5A 2013-12-19 2013-12-19 The Evaporative Cooling Air-conditioning System without the need to water tank cold-storage of wind light mutual complementing power generation Active CN103743012B (en)

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CN104654499A (en) * 2015-01-27 2015-05-27 西安工程大学 Air conditioning system capable of combining dew point evaporative cooling and solar combined heat and power generation
CN105091164A (en) * 2015-08-14 2015-11-25 西安工程大学 Integrated evaporative cooling air conditioner system applicable to single building
CN106091186A (en) * 2016-06-03 2016-11-09 华北电力大学(保定) A kind of building is freezed and heats VMC (Ventilation Mechanical Control System)
CN106839169A (en) * 2017-01-24 2017-06-13 西安工程大学 Underground storage case evaporates cooling channel air-conditioning in combination with enclosed handpiece Water Chilling Units
CN106895524A (en) * 2017-03-22 2017-06-27 西安工程大学 It is used for the cooling system of radiation tail end with reference to the water side evaporation cooling of photovoltaic generation
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CN104654499A (en) * 2015-01-27 2015-05-27 西安工程大学 Air conditioning system capable of combining dew point evaporative cooling and solar combined heat and power generation
CN104654499B (en) * 2015-01-27 2017-05-24 西安工程大学 Air conditioning system capable of combining dew point evaporative cooling and solar combined heat and power generation
CN105091164B (en) * 2015-08-14 2018-01-02 西安工程大学 Suitable for the integrated Evaporative Cooling Air-conditioning System of single building
CN105091164A (en) * 2015-08-14 2015-11-25 西安工程大学 Integrated evaporative cooling air conditioner system applicable to single building
CN106091186A (en) * 2016-06-03 2016-11-09 华北电力大学(保定) A kind of building is freezed and heats VMC (Ventilation Mechanical Control System)
CN106091186B (en) * 2016-06-03 2019-03-22 华北电力大学(保定) A kind of building refrigeration and heating fresh air system
CN106839169A (en) * 2017-01-24 2017-06-13 西安工程大学 Underground storage case evaporates cooling channel air-conditioning in combination with enclosed handpiece Water Chilling Units
CN106895524A (en) * 2017-03-22 2017-06-27 西安工程大学 It is used for the cooling system of radiation tail end with reference to the water side evaporation cooling of photovoltaic generation
CN106895524B (en) * 2017-03-22 2019-10-25 西安工程大学 In conjunction with the cooling cooling system for being used for radiation tail end of water side evaporation of photovoltaic power generation
CN107166581A (en) * 2017-05-09 2017-09-15 西安工程大学 Dormitory apartment passive type Evaporative Cooling Air-conditioning System
CN107166581B (en) * 2017-05-09 2020-06-19 西安工程大学 Passive evaporative cooling air-conditioning system for dormitory apartment building
CN109751688A (en) * 2018-12-25 2019-05-14 西安工程大学 A kind of lying pipe olive cast directly-indirect evaporating-cooling water cooler
CN109751689A (en) * 2018-12-25 2019-05-14 西安工程大学 Integral type two-stage indirect evaporating-cooling water cooler
CN109751689B (en) * 2018-12-25 2021-05-04 西安工程大学 Integrated two-stage indirect evaporative cooling water chilling unit

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