CN101975428A - Air-cooling thermotube-type machine room air-conditioning system - Google Patents
Air-cooling thermotube-type machine room air-conditioning system Download PDFInfo
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- CN101975428A CN101975428A CN 201010528027 CN201010528027A CN101975428A CN 101975428 A CN101975428 A CN 101975428A CN 201010528027 CN201010528027 CN 201010528027 CN 201010528027 A CN201010528027 A CN 201010528027A CN 101975428 A CN101975428 A CN 101975428A
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- 238000001816 cooling Methods 0.000 title abstract description 7
- 239000003507 refrigerant Substances 0.000 claims abstract description 24
- 238000007906 compression Methods 0.000 claims abstract description 12
- 238000001704 evaporation Methods 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 26
- 238000005057 refrigeration Methods 0.000 claims description 14
- 230000005494 condensation Effects 0.000 claims description 11
- 238000009833 condensation Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 210000000887 Face Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N ozone Chemical compound 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Abstract
The invention discloses an air-cooling thermotube-type machine room air-conditioning system which comprises a compressor, a first air cooling condenser, a throttling set, an evaporative condenser, a liquid storage tank, a flow balance valve, a tail end heat exchanger, a bubble pump, a first refrigerant changeover valve, a second refrigerant changeover valve and a second air cooling condenser, wherein the high-pressure exhaust port of the compressor is orderly connected with the first air cooling condenser, the throttling set, the evaporation side of the evaporative condenser, and the low-pressure air suction inlet of the compressor, thereby forming a compression refrigerating cycle loop; the condensing side outlet of the evaporative condenser is orderly connected with the liquid storage tank, the flow balance valve, the tail end heat exchanger, the bubble pump, the first refrigerant changeover valve, and the condensing side inlet of the evaporative condenser; and the outlet of the tail end heat exchanger is orderly connected with the second refrigerant changeover valve, the second air cooling condenser, and the inlet of the liquid storage tank, thereby forming a thermotube refrigerating cycle loop. The system has the advantages of small temperature difference and high energy efficiency ratio during heat exchange.
Description
Technical field
The present invention relates to the air-conditioning system technical field, be specifically related to a kind of air-cooled heat pipe type computer-room air conditioning system.
Background technology
Along with the fast development of China recent years information industry and network application, machine room and base station construction speed are accelerated greatly, and its quantity increases sharply, and more and more becomes the energy consumption rich and influential family.According to statistics, the energy consumption of machine room and base station accounts for 90% of whole network energy consumption, and the air conditioner refrigerating energy consumption accounts for 40%～50% of machine room and base station energy consumption.Particularly many base stations still need to utilize air conditioner refrigerating in spring and autumn and winter season, and this moment, outdoor air temperature was often lower, will reduce the energy consumption of base station air conditioner greatly if can utilize outdoor low temperature to freeze.
The discharging that utilizes outdoor lower temperature to carry out indoor heat is not a completely new concept, and the VMC that has been adopted has in a large number at present promptly adopted this theory, also has the refrigeration system that directly adopts heat exchange method in addition.
A kind of computer-room air conditioning system is disclosed among the Chinese patent ZL200920037779.9, comprise and need the heat radiation unit, the heating face or the non-heating face of two adjacent units in this unit that need dispel the heat are settled relatively, the bottom of each unit is provided with the gas channel that is led to heating face by non-heating face, blower fan is housed in the gas channel, and the division board that extends to the roof is installed in the top of each unit.Between two adjacent unit heating faces and the roof between the non-heating face suction opeing and the air outlet that connects air conditioner is set respectively, can form air conditioner and under last, send cold wind by air outlet, ventilation round via bottom and each layer is delivered to heating face by non-heating face, the suction opeing bottom-up extraction of face hot gas of will generating heat, form rational air-conditioning wind field circulation, obtain desirable air-conditioning effect, and cost economy.
A kind of air conditioner in machine room servicing unit is disclosed among the Chinese invention patent application CN200910035398.1, below the outer machine of air-conditioning, be provided with spray equipment, this spray equipment comprises the spray person in charge, spray is responsible for and is provided with at least one spray arm, the spray arm is arranged at the below of outer machine, be provided with atomizer at a spray tube end, spray is responsible for and is provided with solenoid electric valve, and temperature control circuit is set on the solenoid electric valve.By outdoor machine of air-conditioner is sprayed water-cooled, improve the refrigeration of air-conditioning.
But the refrigeration modes of existing VMC can exist complicated air quality to handle problems, and can there be the problem that the operation temperature difference is big, Energy Efficiency Ratio is not high in the refrigeration system of heat exchange method.Therefore, be necessary to develop a kind of novel computer-room air conditioning system.
Summary of the invention
The invention provides a kind of air-cooled heat pipe type computer-room air conditioning system.
A kind of air-cooled heat pipe type computer-room air conditioning system comprises compressor, first air-cooled condenser, throttling arrangement, evaporative condenser, fluid reservoir, flow balance valve, end heat exchanger, airlift pump, the first cold-producing medium transfer valve, the second cold-producing medium transfer valve and second air-cooled condenser;
The high-pressure exhaust of described compressor is connected with the evaporation side of first air-cooled condenser, throttling arrangement, evaporative condenser, the low pressure air suction mouth of compressor successively, forms the compression refrigeration closed circuit;
The condensation side outlet of described evaporative condenser is connected with the condensation side import of fluid reservoir, flow balance valve, end heat exchanger, airlift pump, the first cold-producing medium transfer valve, evaporative condenser successively, the outlet of described end heat exchanger is connected with the import of the second cold-producing medium transfer valve, second air-cooled condenser, fluid reservoir successively, forms the heat-pipe refrigerating closed circuit.
Described fluid reservoir preferably is positioned at evaporative condenser and second air-cooled condenser below, is beneficial to cold-producing medium and utilizes the gravity effect to circulate.
Described fluid reservoir is positioned at end heat exchanger top, and the distance between fluid reservoir and end heat exchanger is 1m～4m, and the cold-producing medium of being convenient in the fluid reservoir flows into end heat exchanger under the effect of self gravitation.
Described airlift pump can be selected this area common blister pump commonly used for use, also can select for use by perpendicular to the pipeline on ground be installed at the simple and easy airlift pump that the heater on the pipeline is formed.Described air-cooled heat pipe type computer-room air conditioning system needs consumed power to heat in initial start stage, can heat cold-producing medium by airlift pump, and cold-producing medium can be circulated under the effect of indoor/outdoor temperature-difference voluntarily, after this, can close airlift pump.
Described airlift pump is positioned at and is higher than on end heat exchanger 0～1.5m and the pipeline perpendicular to ground, is beneficial to cold-producing medium proper flow in circulation.
Described airlift pump starts back 10min～30min at air-cooled heat pipe type computer-room air conditioning system to be used, and pumps into second air-cooled condenser and makes it to enter fluid reservoir so that stay cold-producing medium between the airlift pump and second air-cooled condenser before system started.
Be set up in parallel 2-20 platform end heat exchanger in the described heat-pipe refrigerating closed circuit, to satisfy different space requirements, general space can suitably increase the quantity of end heat exchanger more greatly.
The described end heat exchanger flow balanced valve of all connecting, convenient thermic load of regulating each end heat exchanger.
The preferred environmental protection working medium cold-producing medium that adopts in the described compression refrigeration closed circuit, the cold-producing medium in this loop can be provided by the air-cooled heat pipe type computer-room air conditioning system of the present invention, also can be provided by other air-conditioning systems, to economize on resources.Described environmental protection working medium cold-producing medium refers to that mainly ozone layer consumption potential (ODP) value is 0 cold-producing medium, as R410 or R134A etc.
The preferred non-azeotropic refrigerant that adopts in the described heat-pipe refrigerating closed circuit.
Compared with prior art, the air-cooled heat pipe type computer-room air conditioning system of the present invention has not only solved the air quality of complexity handling problem in the VMC, also solved the problem that the operation temperature difference is big in the hot swapping, Energy Efficiency Ratio is not high, still be aspects such as national energy strategy no matter from economic benefit, social benefit, all have meaning, mainly have following beneficial effect:
(1) reduces heat transfer temperature difference during more than or equal to 20 ℃ in outdoor temperature, improves refrigerating efficiency.
(2) directly adopt the airlift pump circulating refrigerant when outdoor temperature is lower than 20 ℃, refrigerating efficiency increases substantially, and coefficient of performance of refrigerating (COP) can reach 15～20.
(3) overcome in the conventional computer-room air conditioning system defective that water easily advances machine room, guarantee the computer room safety operation.
Description of drawings
Fig. 1 is the structural representation of the air-cooled heat pipe type computer-room air conditioning system of the present invention;
Among Fig. 1,1 is that compressor, 2 is that first air-cooled condenser, 3 is that throttling arrangement, 4 is that evaporative condenser, 5 is that fluid reservoir, 6 is that flow balance valve, 7 is that end heat exchanger, 8 is that airlift pump, 9 is that the first cold-producing medium transfer valve, 10 is that the second cold-producing medium transfer valve, 11 is second air-cooled condenser.
The specific embodiment
As shown in Figure 1, the air-cooled heat pipe type computer-room air conditioning system of the present invention comprises compressor 1, first air-cooled condenser 2, throttling arrangement 3, evaporative condenser 4, fluid reservoir 5, flow balance valve 6, end heat exchanger 7, airlift pump 8, the first cold-producing medium transfer valve 9, the second cold-producing medium transfer valve 10 and second air-cooled condenser 11.
The high-pressure exhaust of compressor 1 is connected with the evaporation side of first air-cooled condenser 2, throttling arrangement 3, evaporative condenser 4, the low pressure air suction mouth of compressor 1 successively, forms the compression refrigeration closed circuit;
The condensation side outlet of evaporative condenser 4 is connected with the condensation side import of fluid reservoir 5, flow balance valve 6, end heat exchanger 7, airlift pump 8, the first cold-producing medium transfer valve 9, evaporative condenser 4 successively, the outlet of end heat exchanger 7 is connected with the import of the second cold-producing medium transfer valve 10, second air-cooled condenser 11, fluid reservoir 5 successively, forms the heat-pipe refrigerating closed circuit.
Fluid reservoir 5 is positioned at evaporative condenser 4 and second air-cooled condenser, 11 belows, and is positioned at end heat exchanger 7 tops, and the distance that fluid reservoir 5 and end heat exchanger are 7 is 3m.
Airlift pump 8 is served as reasons perpendicular to the pipeline on ground and is installed at the simple and easy airlift pump that the heater on the pipeline is formed, and is installed in to be positioned to be higher than on end heat exchanger 71.5m and the pipeline perpendicular to ground.
Airlift pump 8 starts back 20min at air-cooled heat pipe type computer-room air conditioning system to be used.
Be set up in parallel 15 end heat exchangers 7 in the heat-pipe refrigerating closed circuit, every end heat exchanger 7 series connection one flow balanced valve 6.
The air-cooled heat pipe type computer-room air conditioning system of the present invention is made up of compression refrigeration closed circuit and heat-pipe refrigerating closed circuit, the compression refrigeration closed circuit preferably adopts environmental protection working medium cold-producing medium as first cold-producing medium, as environmental protection working medium cold-producing mediums such as R410 or R134A, cold-producing medium in this loop can be provided by the air-cooled heat pipe type computer-room air conditioning system of the present invention, also can provide, to economize on resources by other air-conditioning systems; The heat-pipe refrigerating closed circuit can adopt non-azeotropic refrigerant as second cold-producing medium, as non-azeotropic refrigerants such as R410A.
The course of work of the air-cooled heat pipe type computer-room air conditioning system of the present invention is as follows:
When outdoor temperature during more than or equal to 20 ℃, the first cold-producing medium transfer valve 9 is opened, the second cold-producing medium transfer valve 10 cuts out, the first cold-producing medium transfer valve 9 open or close and the second cold-producing medium transfer valve 10 open or close all that can control by existing responsive to temperature control system also can be by manually control.In the compression refrigeration closed circuit, enter first air-cooled condenser 2 after compressed machine 1 compression of first refrigerant gas and become first refrigerant liquid by the outdoor air cooling condensation, first refrigerant liquid enters evaporative condenser 4 after throttling arrangement 3 throttling step-downs evaporation side, with the condensation side generation Hot swapping of evaporative condenser 4, promptly absorb after the condensation heat in the heat-pipe refrigerating closed circuit evaporation and become first refrigerant gas and sucked by compressor 1 and enter next circulation.In the heat-pipe refrigerating closed circuit, the flow balance valve 6 of under the gravity effect, flowing through of second refrigerant liquid in the fluid reservoir 5, evaporate behind the heat in the absorption chamber in the heat exchanger 7 endways and become second refrigerant gas, the condensation side that second refrigerant gas enters evaporative condenser 4 through the first cold-producing medium transfer valve 9, carry out Hot swapping with first refrigerant liquid in the evaporation side of evaporative condenser 4, become second refrigerant liquid after the release heat and enter fluid reservoir 5, enter next circulation.
When outdoor temperature is lower than 20 ℃, the first cold-producing medium transfer valve 9 cuts out, the second cold-producing medium transfer valve 10 is opened, 8 of airlift pumps are worked in system starts back 20min, stay second cold-producing medium between the airlift pump 8 and second air-cooled condenser 11 before system is started and pump into second air-cooled condenser 11 and make it to enter fluid reservoir 5.The compression refrigeration closed circuit quits work.In the heat-pipe refrigerating closed circuit, second refrigerant liquid in the fluid reservoir 5 is process flow balance valve 6 under the gravity effect, evaporate behind the heat in the absorption chamber in the heat exchanger 7 endways and become second refrigerant gas, second refrigerant gas enters 11 condensations of second air-cooled condenser through airlift pump 8 and the second cold-producing medium transfer valve 10 and becomes second refrigerant liquid, second refrigerant liquid enters fluid reservoir 5, enters next circulation.
The air-cooled heat pipe type computer-room air conditioning system of the present invention system, when outdoor temperature is low, can directly adopt the heat-pipe refrigerating closed circuit, do not use the compression refrigeration closed circuit, system COP increases substantially, can reach 18, regulate airlift pump 8 and start back 10min～30min use at air-cooled heat pipe type computer-room air conditioning system, the distance that fluid reservoir 5 and end heat exchanger are 7 is 1m～4m, airlift pump 8 is positioned at and is higher than on end heat exchanger 70～1.5m and the pipeline perpendicular to ground, be set up in parallel 2-20 platform end heat exchanger 7 these parameters in the heat-pipe refrigerating closed circuit, system COP can reach 15～20.The indoor direct employing heat-pipe refrigerating circulation of machine room, second cold-producing medium uses non-azeotropic refrigerants such as R410A, guarantees computer room safety.
Claims (10)
1. air-cooled heat pipe type computer-room air conditioning system, it is characterized in that, comprise compressor (1), first air-cooled condenser (2), throttling arrangement (3), evaporative condenser (4), fluid reservoir (5), flow balance valve (6), end heat exchanger (7), airlift pump (8), the first cold-producing medium transfer valve (9), the second cold-producing medium transfer valve (10) and second air-cooled condenser (11);
The high-pressure exhaust of described compressor (1) is connected with the evaporation side of first air-cooled condenser (2), throttling arrangement (3), evaporative condenser (4), the low pressure air suction mouth of compressor (1) successively, forms the compression refrigeration closed circuit;
The condensation side outlet of described evaporative condenser (4) is connected with the condensation side import of fluid reservoir (5), flow balance valve (6), end heat exchanger (7), airlift pump (8), the first cold-producing medium transfer valve (9), evaporative condenser (4) successively, the outlet of described end heat exchanger (7) is connected with the import of the second cold-producing medium transfer valve (10), second air-cooled condenser (11), fluid reservoir (5) successively, forms the heat-pipe refrigerating closed circuit.
2. air-cooled heat pipe type computer-room air conditioning system according to claim 1 is characterized in that, described fluid reservoir (5) is positioned at evaporative condenser (4) and second air-cooled condenser (11) below.
3. air-cooled heat pipe type computer-room air conditioning system according to claim 1 and 2 is characterized in that, described fluid reservoir (5) is positioned at end heat exchanger (7) top, and the distance between fluid reservoir (5) and end heat exchanger (7) is 1m～4m.
4. air-cooled heat pipe type computer-room air conditioning system according to claim 1 is characterized in that, described airlift pump (8) is served as reasons perpendicular to the pipeline on ground and is installed at the simple and easy airlift pump that the heater on the pipeline is formed.
5. according to claim 1 or 4 described air-cooled heat pipe type computer-room air conditioning systems, it is characterized in that described airlift pump (8) is positioned at and is higher than on end heat exchanger (7) 0～1.5m and the pipeline perpendicular to ground.
6. air-cooled heat pipe type computer-room air conditioning system according to claim 1 is characterized in that, described airlift pump (8) starts back 10min～30min at air-cooled heat pipe type computer-room air conditioning system to be used.
7. air-cooled heat pipe type computer-room air conditioning system according to claim 1 is characterized in that, is set up in parallel 2-20 platform end heat exchanger (7) in the described heat-pipe refrigerating closed circuit.
8. air-cooled heat pipe type computer-room air conditioning system according to claim 7 is characterized in that, described end heat exchanger (7) the flow balanced valve (6) of all connecting.
9. air-cooled heat pipe type computer-room air conditioning system according to claim 1 is characterized in that, adopts environmental protection working medium cold-producing medium in the described compression refrigeration closed circuit.
10. air-cooled heat pipe type computer-room air conditioning system according to claim 1 is characterized in that, adopts non-azeotropic refrigerant in the described heat-pipe refrigerating closed circuit.
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| CN102538101A (en) * | 2012-02-17 | 2012-07-04 | 合肥工业大学 | Heat pipe composite air conditioning unit for machine room and working mode of heat pipe composite air conditioning unit |
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Effective date of registration: 20220530 Address after: 310019 Room 501, building 1, No. 51, Jiusheng Road, Jianggan District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Thorpe United Technology Co.,Ltd. Address before: 310027 No. 38, Zhejiang Road, Hangzhou, Zhejiang, Xihu District Patentee before: ZHEJIANG University |