CN210570152U - Heat pipe air conditioning system for machine room - Google Patents
Heat pipe air conditioning system for machine room Download PDFInfo
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- CN210570152U CN210570152U CN201921090755.XU CN201921090755U CN210570152U CN 210570152 U CN210570152 U CN 210570152U CN 201921090755 U CN201921090755 U CN 201921090755U CN 210570152 U CN210570152 U CN 210570152U
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- heat pipe
- indoor
- machine room
- condenser
- air conditioning
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 24
- 239000003507 refrigerant Substances 0.000 claims abstract description 66
- 238000005057 refrigeration Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 2
- 241000196324 Embryophyta Species 0.000 abstract 1
- 235000009470 Theobroma cacao Nutrition 0.000 abstract 1
- 244000240602 cacao Species 0.000 abstract 1
- 238000005265 energy consumption Methods 0.000 description 8
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model relates to a computer lab heat pipe air conditioning system, including indoor unit, outdoor unit and the control unit, indoor unit passes through refrigerant pipeline and outdoor unit intercommunication, indoor unit includes evaporimeter and indoor fan, outdoor unit includes parallelly connected heat pipe condenser and mechanical refrigerating plant; the control unit is set to enable only the heat pipe condenser to work and the mechanical refrigerating device not to work when the indoor and outdoor temperature difference is larger than a first threshold value; when the indoor and outdoor temperature difference is smaller than a second threshold value, only the mechanical refrigerating device works, and the heat pipe condenser does not work; when the indoor and outdoor temperature difference is less than or equal to the first threshold value but greater than or equal to the second threshold value, the heat pipe condenser and the mechanical refrigerating device work simultaneously. The utility model discloses cocoa furthest utilizes natural cold source, reaches energy-conserving purpose, reduces the PUE value of data computer lab.
Description
Technical Field
The invention relates to a heat pipe air conditioning system, in particular to a machine room heat pipe air conditioning system.
Background
The energy consumption problem of the data center relates to a plurality of aspects, and according to a statistical report of technical committee 9.9 (TC 9.9 for short) of the american society of heating and cooling engineers (ASHRAE), the power consumption distribution of each part of the data center is approximately as follows: 46% of a server; refrigerating by an air conditioner by 31 percent; UPS loss is 8%; 4% of illumination; the other 11%. Therefore, the air-conditioning refrigeration system accounts for nearly one third of the total power consumption of the data center and is a key index influencing the energy consumption of the machine room. The energy consumption of air-conditioning refrigeration of each data center is greatly different, and the air-conditioning refrigeration scheme with perfect design can greatly reduce the energy consumption and reduce the energy utilization efficiency (PUE) value. Cost pressure brought by high energy consumption of large-scale data centers and the fact that governments in various places strictly control PUE policies are issued, and owners are required to select more efficient energy-saving equipment. Products meeting the refrigeration requirements of data machine rooms in the current market mainly comprise two types of products: 1. the direct expansion type machine room precise air conditioner has the main structural forms of inter-row type and cabinet type precise air conditioners and has the advantages that the compressor refrigeration technology is adopted, the control technology is mature, the installation and debugging are convenient, the defects are that the power consumption is high, the energy efficiency ratio is low, the energy efficiency ratio of the high-cooling-capacity precise air conditioner is less than or equal to 3, and the energy is not saved; 2. the water cooling type precise air conditioner has the advantages that the water cooling set matched with the tail end of the water cooling type precise air conditioner has higher energy efficiency than a direct expansion type precise air conditioner, partial energy saving can be realized after a 'natural cooling' technology is added, a natural cold source cannot be utilized to the maximum extent, the system is complex in pipeline, large in one-time investment and long in construction period.
Therefore, a novel energy-saving machine room air conditioner is urgently needed to replace the traditional machine room air conditioner, the PUE value of a data machine room is reduced, and the purpose of energy saving is achieved.
Disclosure of Invention
The invention makes innovation and breakthrough aiming at the technical problems in the existing machine room air conditioner, provides a brand-new machine room heat pipe air conditioning system, can utilize natural cold sources to the maximum extent, achieves the aim of energy saving and reduces the PUE value of a data machine room.
In order to achieve the purpose, the invention adopts the following technical scheme: a machine room heat pipe air conditioning system comprises an indoor unit, an outdoor unit and a control unit, wherein the indoor unit comprises an evaporator and an indoor fan, the evaporator is provided with a gaseous refrigerant outlet and a liquid refrigerant inlet, and the indoor unit is communicated with the outdoor unit through a refrigerant pipeline in a fluid mode; the refrigerant inlet and outlet of the heat pipe condenser and the refrigerant inlet and outlet of the mechanical refrigerating device are respectively communicated with the gaseous refrigerant outlet and the liquid refrigerant inlet of the evaporator; the control unit is set to enable only the heat pipe condenser to work and the mechanical refrigerating device not to work when the indoor and outdoor temperature difference is larger than a first threshold value; when the indoor and outdoor temperature difference is smaller than a second threshold value, only the mechanical refrigerating device works, and the heat pipe condenser does not work; when the indoor and outdoor temperature difference is less than or equal to the first threshold value but greater than or equal to the second threshold value, the heat pipe condenser and the mechanical refrigerating device work.
In one embodiment, the machine room heat pipe air conditioning system further comprises a heat pipe condenser fan and a mechanical refrigeration unit condenser fan.
Preferably, the heat pipe condenser fan and the mechanical refrigeration device condenser fan are the same fan.
In one embodiment, the mechanical refrigeration unit further comprises a plate heat exchanger or a shell and tube heat exchanger.
In a specific embodiment, the first inlet of the plate heat exchanger is communicated with the gaseous refrigerant outlet of the evaporator, and the first outlet of the plate heat exchanger is communicated with the suction port of the compressor; and a second inlet of the plate heat exchanger is communicated with an outlet of the condenser, and a second outlet of the plate heat exchanger is communicated with a liquid refrigerant inlet of the evaporator.
In one embodiment, the mechanical refrigeration unit further comprises a filter-drier in the refrigerant line between the outlet of the condenser and the liquid refrigerant inlet of the evaporator.
In one embodiment, the compressor may be a single or multiple fixed frequency compressors, or a single or multiple inverter compressors, or a combination of at least one fixed frequency compressor and at least one inverter compressor.
In one embodiment, the condenser of the mechanical refrigeration device and the heat pipe condenser are evaporative cooling.
In one embodiment, the plate heat exchanger is a brazed plate heat exchanger.
In one embodiment, the first threshold is 10 ℃ and the second threshold is 3 ℃.
The beneficial technical effects of the invention comprise:
1) the natural cold source is connected with the mechanical cold source in parallel, so that the matching cold quantity can be provided for the heat pipe, and the natural cold source is more fully utilized and more energy-saving.
2) The natural cold source and the circulating refrigerant directly exchange heat once, the required heat exchange temperature difference is small, the time for utilizing the natural cold source all year round is more, and the energy is saved.
3) The condensation temperature of the heat pipe refrigerant is high, the time for utilizing a natural cold source all the year round is longer, and more energy is saved.
4) The refrigerant circulation between the indoor unit and the outdoor unit is passive, zero energy consumption is realized, and more energy is saved.
5) The indoor evaporator adopts sensible heat exchange, has small thickness and low wind resistance, reduces the energy consumption of the indoor fan and is beneficial to energy conservation.
6) The condenser, the evaporator and the compressor are installed in the same area, and the distance between the system pipelines is reduced, so that the resistance is reduced, the pressure difference between the outlet and the suction port of the compressor is reduced, the energy efficiency ratio is improved, and the energy consumption is reduced.
7) The running time of the compressor is greatly reduced, and the service life of the air conditioning equipment is prolonged.
8) In the project of constructing a large-scale data center, the traditional machine room air conditioner needs to be constructed integrally at one time, the construction period is long, and the one-time investment is large.
9) The energy-saving machine room heat pipe air conditioner can fully utilize natural cold sources, can automatically adjust the refrigerating capacity according to the machine room load, and effectively reduces the PUE value of a newly-built machine room under partial load.
Drawings
Fig. 1 is a schematic diagram of the invention principle of a heat pipe air conditioning system of a machine room.
Detailed Description
The invention is further described below with reference to the accompanying drawings. It should be understood that the embodiments of the present invention described in the drawings are illustrative of the invention and are not to be construed as limiting the invention. The scope of the invention is defined by the appended claims.
It should be noted that for convenience of description, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "back" and other directional terms of the invention may be used for convenience of description only and should not be construed as limiting the invention in any way.
See fig. 1. A machine room heat pipe air conditioning system 100 of the present invention includes an indoor unit 20, an outdoor unit 10, and a control unit (not shown), the indoor unit 20 communicating with the outdoor unit 10 through a refrigerant line 30. The indoor unit 20 includes an evaporator 201 and an indoor fan 202. The evaporator 201 has a gaseous refrigerant outlet (not shown) and a liquid refrigerant inlet (not shown). The outdoor unit 10 includes a heat pipe condenser 106 and a mechanical refrigeration device including a compressor 101, a condenser 102, and a throttle valve 104 in parallel. A refrigerant inlet (not shown) and a refrigerant outlet (not shown) of the heat pipe condenser 106 communicate with a gaseous refrigerant outlet and a liquid refrigerant inlet of the evaporator 201.
Also included in the outdoor unit 10 of fig. 1 is a plate heat exchanger 105. The plate heat exchanger 105 includes a first refrigerant inlet 1051, a first refrigerant outlet 1052, a second refrigerant inlet 1053, and a second refrigerant outlet 1054. The first refrigerant inlet 1051 communicates with the gaseous refrigerant outlet of the evaporator 201, and the first refrigerant outlet 1052 communicates with the refrigerant inlet (not shown) of the compressor 101; the second refrigerant inlet 1053 communicates with a liquid refrigerant outlet (not shown) of the condenser 102 through the throttle valve 104 and the dry filter 103, and the second refrigerant outlet 1054 communicates with a liquid refrigerant inlet of the evaporator 201.
It should be noted that the plate heat exchanger 105 is not essential, and the refrigerant inlet of the compressor 101 may be directly communicated with the gaseous refrigerant outlet of the evaporator 201, while the liquid refrigerant outlet of the condenser 102 may be communicated with the liquid refrigerant inlet of the evaporator 201 through the dry filter 103 and the throttle valve 104.
when the indoor and outdoor temperature difference is greater than a first threshold value (usually, the indoor and outdoor temperature difference is △ t >10 ℃, and the outdoor temperature is lower than the indoor temperature), the liquid refrigerant (such as the refrigerant R22 or the environment-friendly refrigerant such as R410a, R134 a) in the indoor evaporator 201 absorbs heat in the indoor environment through the circulating airflow action of the indoor fan 202, evaporates into a gas state (i.e., absorbs heat through phase change), and is transported to the outdoor plate heat exchanger 105 and the outdoor heat pipe condenser 106 along the refrigerant pipeline 30. due to the sufficient indoor and outdoor temperature difference, the gas refrigerant condenses into a liquid state in the outdoor heat pipe condenser 106, and dissipates heat into the atmosphere under the action of the outdoor fan 107, and simultaneously the liquid refrigerant flows back into the indoor evaporator 201 through the refrigerant pipeline 30 under the action of gravity, completing a refrigeration cycle, such as completing heat transfer between the indoor and the outdoor.
when the indoor and outdoor temperature difference is less than a second threshold value (generally delta t is less than 3 ℃) or the outdoor temperature is higher than the indoor temperature, the liquid refrigerant in the indoor evaporator 201 is evaporated, gasified and phase-changed refrigerant is conveyed to the outdoor heat pipe condenser 106 and the plate heat exchanger 105 along the refrigerant pipeline 30, at this time, the heat pipe condenser 106 cannot perform the condensation function, the mechanical refrigeration device is started, the gaseous refrigerant passes through the pipeline, passes through the compressor 101, the condenser 102, the drying filter 103 and the throttle valve 104 to form a mechanical refrigeration mode, the condensation of the gaseous refrigerant on the heat pipe side in the plate heat exchanger 105 is completed, the condensed liquid refrigerant flows back into the indoor evaporator 201 through the refrigerant pipeline 30 under the action of gravity, and a thermodynamic cycle is completed.
when the indoor and outdoor temperature difference is between a first threshold value and a second threshold value, namely △ t is more than or equal to 3 ℃ and less than or equal to 10 ℃, one part of the vaporized refrigerant in the indoor evaporator 201 returns to the indoor evaporator 201 after being condensed in the outdoor heat pipe condenser 106, and the other part of the vaporized refrigerant returns to the indoor evaporator 201 through the refrigerant pipeline 30 after being condensed by the mechanical refrigeration device and passing through the plate heat exchanger 105 to finish primary heat exchange.
The compressor 101 in this embodiment may be a single or multiple fixed-frequency compressors, or a single or multiple variable-frequency compressors, or a combination of at least one fixed-frequency compressor and at least one variable-frequency compressor.
The condenser 102 and the heat pipe condenser 106 are evaporative cooling in this embodiment, but are not limited thereto.
The plate heat exchanger 105 in the present embodiment may be a brazed plate heat exchanger, but is not limited thereto.
The outdoor fan 107 in this embodiment may be used for both the heat pipe condenser 106 and the condenser 102, but an outdoor fan may be provided for each of the heat pipe condenser 106 and the condenser 102.
The throttle valve 104 in the present embodiment may be an electronic expansion valve, but is not limited thereto.
The controller and the control logic in this embodiment are easy to be implemented by those skilled in the art, and are not described herein again.
Based upon the foregoing description of the preferred embodiment of the invention, it should be apparent that the invention defined by the appended claims is not limited solely to the specific details set forth in the foregoing description, as many apparent variations thereof are possible without departing from the spirit or scope thereof.
Claims (10)
1. A machine room heat pipe air conditioning system comprises an indoor unit, an outdoor unit and a control unit, wherein the indoor unit comprises an evaporator and an indoor fan, the evaporator is provided with a gaseous refrigerant outlet and a liquid refrigerant inlet, and the indoor unit is communicated with the outdoor unit through a refrigerant pipeline in a fluid mode; a refrigerant inlet and a refrigerant outlet of the heat pipe condenser and a refrigerant inlet and a refrigerant outlet of the mechanical refrigerating device are respectively communicated with a gaseous refrigerant outlet and a liquid refrigerant inlet of the evaporator; the control unit is set to enable only the heat pipe condenser to work and the mechanical refrigerating device not to work when the indoor and outdoor temperature difference is larger than a first threshold value; when the indoor and outdoor temperature difference is smaller than a second threshold value, only the mechanical refrigerating device works, and the heat pipe condenser does not work; when the indoor and outdoor temperature difference is less than or equal to the first threshold value but greater than or equal to the second threshold value, the heat pipe condenser and the mechanical refrigerating device work.
2. A machine room heat pipe air conditioning system as claimed in claim 1, further comprising a heat pipe condenser fan and a mechanical refrigeration unit condenser fan.
3. A machine room heat pipe air conditioning system as claimed in claim 2, wherein the heat pipe condenser fan and the mechanical refrigeration unit condenser fan are the same fan.
4. A heat pipe air conditioning system for machine room as claimed in claim 1, wherein the mechanical refrigeration device further comprises a plate heat exchanger or a shell and tube heat exchanger.
5. The machine room heat pipe air conditioning system according to claim 4, wherein the first inlet of the plate heat exchanger is communicated with the gaseous refrigerant outlet of the evaporator, and the first outlet of the plate heat exchanger is communicated with a compressor suction port; and a second inlet of the plate heat exchanger is communicated with an outlet of the condenser, and a second outlet of the plate heat exchanger is communicated with a liquid refrigerant inlet of the evaporator.
6. A machine room heat pipe air conditioning system as claimed in claim 1, wherein the mechanical refrigeration device further comprises a dry filter in line between the outlet of the condenser and the liquid refrigerant inlet of the evaporator.
7. The machine room heat pipe air conditioning system of claim 1, wherein the compressor can be one or more fixed frequency compressors, or one or more variable frequency compressors, or a combination of at least one fixed frequency compressor and at least one variable frequency compressor.
8. The machine room heat pipe air conditioning system according to claim 1, wherein the mechanical refrigeration device condenser and the heat pipe condenser adopt an evaporative cooling method.
9. A machine room heat pipe air conditioning system as claimed in claim 5, wherein the plate heat exchanger is a brazed plate heat exchanger.
10. A machine room heat pipe air conditioning system as claimed in claim 1, wherein the first threshold is 10 ℃ and the second threshold is 3 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921090755.XU CN210570152U (en) | 2019-07-12 | 2019-07-12 | Heat pipe air conditioning system for machine room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921090755.XU CN210570152U (en) | 2019-07-12 | 2019-07-12 | Heat pipe air conditioning system for machine room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210570152U true CN210570152U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921090755.XU Expired - Fee Related CN210570152U (en) | 2019-07-12 | 2019-07-12 | Heat pipe air conditioning system for machine room |
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| Country | Link |
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| CN (1) | CN210570152U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319721A (en) * | 2019-07-12 | 2019-10-11 | 南京春荣节能科技有限公司 | A kind of computer room heat pipe air conditioner system |
| WO2022233135A1 (en) * | 2021-05-06 | 2022-11-10 | 青岛海尔空调器有限总公司 | Outdoor unit of air conditioner, air conditioner, air conditioner control method and apparatus, and device and medium |
-
2019
- 2019-07-12 CN CN201921090755.XU patent/CN210570152U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319721A (en) * | 2019-07-12 | 2019-10-11 | 南京春荣节能科技有限公司 | A kind of computer room heat pipe air conditioner system |
| WO2022233135A1 (en) * | 2021-05-06 | 2022-11-10 | 青岛海尔空调器有限总公司 | Outdoor unit of air conditioner, air conditioner, air conditioner control method and apparatus, and device and medium |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 |