CN212457135U - Novel machine room air conditioning system - Google Patents
Novel machine room air conditioning system Download PDFInfo
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- CN212457135U CN212457135U CN202021056108.XU CN202021056108U CN212457135U CN 212457135 U CN212457135 U CN 212457135U CN 202021056108 U CN202021056108 U CN 202021056108U CN 212457135 U CN212457135 U CN 212457135U
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- machine room
- air conditioning
- heat pipe
- conditioning system
- room air
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 22
- 239000003507 refrigerant Substances 0.000 claims abstract description 46
- 238000005057 refrigeration Methods 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 3
- 230000001105 regulatory Effects 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000004301 light adaptation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002035 prolonged Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Abstract
The invention relates to a novel air conditioning system for a machine room, which comprises an indoor unit, an outdoor unit and a control unit, wherein the indoor unit is in fluid communication with the outdoor unit through a refrigerant pipeline, the indoor unit comprises an evaporator and an indoor fan, and the outdoor unit comprises a heat pipe condenser and a mechanical refrigerating device; the control unit can control the novel machine room air conditioning system to be in a heat pipe working mode, a mechanical refrigeration working mode and a working mode of heat pipes and mechanical refrigeration in parallel. In view of the environmental requirements of the machine room, the system has long time for utilizing natural cold all year round, and has higher energy efficiency all year round than that of the air conditioner in the machine room.
Description
Technical Field
The invention relates to an air conditioning system for a machine room, in particular to a novel air conditioning system for the machine room.
Background
The construction of a green data center is an important task for constructing a new-generation information infrastructure, is a basic requirement for guaranteeing the sustainability of resource environment, and is a powerful measure for deeply implementing the strategy of manufacturing and network strengthening countries. In order to implement ' industry green development planning ' (2016 + 2020) ' (Ministry of industry & communications ' rule No. ' 2016 (225) ') and ' guidance comments of industry and informatization department on strengthening ' thirteen-five ' information communication industry energy conservation and emission reduction work ' (Ministry of industry & communications ' No. ' 2017) ' (77), the construction of a green data center is accelerated, the aim of improving the green development level of the data center is taken, and the green design guidance of the newly-built data center in aspects of IT equipment, rack layout, refrigeration and heat dissipation systems, power supply and distribution systems, clean energy utilization systems and the like is strengthened. The method has the advantages that efficient system design schemes such as liquid cooling, distributed power supply, modular machine rooms, virtualization and cloud IT resources are encouraged to be adopted, and accurate adaptation of the dynamic environment system and the IT equipment running state is fully considered; the construction of clean energy utilization systems such as natural cold sources, waste heat recycling of self-owned systems or renewable energy power generation and the like in self-owned places is encouraged; and (3) encouraging the application of a numerical simulation technology to carry out thermal field simulation analysis and verifying the design cold quantity and the machine room flow field characteristics. In 2022, the average energy consumption of the data center basically reaches the international advanced level, the electric energy utilization efficiency value of a newly-built large-scale and ultra-large-scale data center reaches below 1.4, and old equipment with high energy consumption is basically eliminated.
Based on the requirement of an owner on energy conservation, the traditional machine room air conditioner is replaced by some novel ultrahigh energy efficiency ratio machine room air conditioning technologies, the PUE of a data machine room is reduced, the energy-saving purpose is achieved, and a green machine room is built.
Disclosure of Invention
The invention tightly grasps the theme of 'green', makes innovation and breakthrough aiming at the technical problem of low energy efficiency ratio in the existing machine room air conditioner, provides a novel machine room air conditioning system, fully utilizes natural cold source, achieves the purpose of energy saving, reduces the PUE value of a data machine room, and builds a green machine room.
In order to achieve the purpose, the invention adopts the following technical scheme: a novel machine room air conditioning system comprises an indoor unit, an outdoor unit and a control unit, wherein the indoor unit comprises a heat pipe evaporator and an indoor fan, the heat pipe evaporator is provided with a refrigerant outlet and a refrigerant inlet, the outdoor unit comprises a heat pipe condenser, a fan and a mechanical refrigerating device, the mechanical refrigerating device comprises a compressor, a condenser, a heat exchanger and a throttling device, and the indoor unit is in fluid communication with the outdoor unit through a refrigerant pipeline; when the refrigerating capacity of the heat pipe system can not completely meet the refrigerating capacity requirement of the machine room, part of refrigerating capacity is provided, and the rest of refrigerating capacity requirements are provided by a mechanical refrigerating device; when the heat pipe system can not provide the cooling capacity, the mechanical refrigerating device provides all the cooling capacity required by the machine room.
In data computer lab refrigerating system's application scene, only when summer high temperature all the year, can not utilize natural cold source instant heating pipe system, the usable natural cold source of novel computer lab air conditioner most of time provides the cold source for the computer lab, so the energy efficiency ratio all the year of this system is very high, and is more energy-conserving than traditional computer lab refrigeration air conditioner.
In one embodiment, the novel machine room 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.
A first refrigerant inlet of the heat exchanger is in fluid communication with a refrigerant outlet of the heat pipe condenser, and a first refrigerant outlet is in fluid communication with a refrigerant inlet of the heat pipe evaporator; the second refrigerant inlet is in fluid communication with a throttle valve outlet of the mechanical refrigeration device, and the second refrigerant outlet is in fluid communication with a compressor suction port of the mechanical refrigeration device.
In one embodiment, the compressor may be a single fixed frequency compressor or a plurality of fixed frequency compressors connected in parallel; or a single frequency conversion compressor or a plurality of frequency conversion compressors are connected in parallel; or a combination of one variable frequency compressor and at least one fixed frequency compressor.
In one embodiment, the condenser of the heat pipe is air-cooled, and evaporative cooling can also be adopted.
In one embodiment, the heat exchanger is a plate heat exchanger or a shell and tube heat exchanger.
The mechanical refrigerating device pipeline can also be provided with refrigerating accessories such as a gas-liquid separator, a liquid storage tank, a drying filter and the like.
The beneficial technical effects of the invention comprise:
(1) the natural cold source, namely the working mode of the heat pipe system, operates independently to provide required cold for the machine room, and the energy efficiency ratio is extremely high.
(2) The natural cold source and the mechanical refrigeration are combined to run, cold energy is provided, the natural cold source provides precooling for the mechanical refrigeration, the mechanical refrigeration load is reduced, and the natural cold source is more fully utilized and more energy-saving.
(3) When the natural cold source does not work, the mechanical cold source working mode can meet the refrigeration requirement of the machine room, and the energy efficiency ratio of the mechanical cold source working mode is equivalent to that of the traditional machine room air conditioner.
(4) The condenser, the evaporator and the compressor in the mechanical refrigerating device are installed in the same area, and the distance of a system pipeline 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 lower than that of a traditional mechanical refrigerating system.
(5) The running time of the compressor is greatly reduced, energy is saved, and the service life of the air conditioning equipment is prolonged.
(6) 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.
(7) 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 an inventive schematic diagram of a novel air conditioning system of the present invention.
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. The novel air conditioning system 100 for the machine room comprises an indoor unit 20, an outdoor unit 10 and a control unit (not shown in the figure), wherein the indoor unit 20 is in fluid communication with the outdoor unit 10 through a refrigerant pipeline 30. The indoor unit 20 includes an evaporator 201, an indoor fan 202, and a flow rate adjusting device 203. 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 101, an outdoor fan 106, and a mechanical refrigeration device; the mechanical refrigeration device comprises a compressor 103, a condenser 102, a throttle device 104 and a plate heat exchanger 105. The plate heat exchanger 105 is also part of the heat pipe system as an evaporator of the mechanical refrigeration device.
The plate heat exchanger 105 includes a first refrigerant inlet 1051, a first refrigerant outlet 1053, a second refrigerant inlet 1052, and a second refrigerant outlet 1054; the first refrigerant inlet 1051 is in fluid communication with a heat pipe condenser refrigerant outlet (not shown), and the first refrigerant outlet 1053 is in fluid communication with the heat pipe evaporator 201 via a refrigerant line 30 via a flow regulator 203; the second refrigerant inlet 1052 is in fluid communication with the outlet (not shown) of the throttle valve 104 of the mechanical refrigeration unit, and the second refrigerant outlet 1054 is in fluid communication with the suction port (not shown) of the mechanical refrigeration compressor 103.
When the natural cooling source, i.e., the heat pipe system, completely meets the cooling requirement of the machine room, the liquid refrigerant (e.g., refrigerant R22 or the environment-friendly refrigerant such as R410a, R134 a) in the indoor evaporator 201 absorbs the heat in the indoor environment through the circulating airflow of the indoor fan 202, evaporates and changes into a gaseous state (i.e., phase change heat absorption), and is transported to the outdoor heat pipe condenser 101 along the refrigerant pipe 30 to be condensed, the gaseous refrigerant dissipates the heat into the atmosphere under the action of the outdoor fan 106, condenses and forms a liquid state in the outdoor heat pipe condenser 101, and the liquid refrigerant returns to the indoor evaporator 201 through the refrigerant pipe 30 and the right side of the plate heat exchanger 105 and the flow regulator 203 under the action of gravity to complete a cooling cycle, thus completing the indoor and outdoor heat transfer repeatedly. At this time, the mechanical refrigerating device does not need to be started to work, only the indoor fan 202 and the outdoor fan 106 consume power, and the energy efficiency ratio is high.
When the natural cold source heat pipe system has no heat exchange capacity, the mechanical refrigeration system works, and at the moment, the left side of the plate heat exchanger 105 is an evaporator of the mechanical refrigeration system to absorb heat on the right side of the plate heat exchanger 105; the liquid refrigerant in the indoor evaporator 201 absorbs indoor heat to evaporate into a gaseous state under the action of circulating air of the indoor fan 202, enters the first refrigerant inlet 1051 of the plate heat exchanger through the refrigerant pipeline 30 via the heat pipe condenser 101, enters the right side of the plate heat exchanger, condenses into a liquid refrigerant due to heat absorption of the left side of the plate heat exchanger, flows into the indoor evaporator 201 through the first refrigerant outlet 1053 of the plate heat exchanger via the refrigerant pipeline 30 and via the flow regulating device 203 to form a refrigeration cycle, and thus, the indoor heat is exchanged to the outdoor repeatedly. The working principle of the mechanical refrigeration device is clear to those skilled in the art and will not be described in detail herein.
When the natural cold source heat pipe system has partial heat exchange capacity, partial refrigerating capacity can be provided, the rest refrigerating capacity is provided by the mechanical refrigerating system, the natural cold source heat pipe system can provide precooling for mechanical refrigeration, the condensation temperature of a mechanical cold source can be reduced, the mechanical cold source load is reduced, the rotating speed of the variable frequency press can be reduced, the energy consumption is reduced, and the energy efficiency ratio of the variable frequency press is higher than that of the traditional precision air conditioner under the working condition.
The compressor 103 in this embodiment may be a single fixed-frequency compressor or multiple fixed-frequency compressors connected in parallel, or a single variable-frequency compressor or multiple variable-frequency compressors connected in parallel; or a combination of at least one variable frequency compressor and at least one fixed frequency compressor.
The mechanical refrigeration condenser 102 and the heat pipe system condenser 101 in this embodiment are air-cooled, and may also be evaporative-cooled, but are not limited thereto.
The plate heat exchanger 105 in the present embodiment may be replaced with another type of heat exchanger, such as a shell-and-tube heat exchanger, but is not limited thereto.
The outdoor fan 106 in this embodiment may be used for both the heat pipe condenser 101 and the mechanical refrigeration condenser 102, but fans may be separately provided for the heat pipe condenser 101 and the mechanical refrigeration condenser 102.
The throttle device 203 in this embodiment may be an electronic expansion valve, but is not limited thereto.
The control unit and the control logic in this embodiment can be developed and set according to a specific application scenario, which is easy for those skilled in the art to implement, 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 (9)
1. A novel machine room air conditioning system comprises an indoor unit, an outdoor unit and a control unit, wherein the indoor unit comprises a heat pipe evaporator and an indoor fan, the heat pipe evaporator is provided with a gaseous refrigerant outlet and a liquid refrigerant inlet, the outdoor unit comprises a heat pipe condenser, a fan and a mechanical refrigerating device, the mechanical refrigerating device comprises a compressor, a condenser, a heat exchanger and a throttling device, and the indoor unit is in fluid communication with the outdoor unit through a refrigerant pipeline; when the refrigerating capacity of the heat pipe system can not completely meet the refrigerating capacity requirement of the machine room, part of refrigerating capacity is provided, and the rest of refrigerating capacity requirements are provided by a mechanical refrigerating device; when the heat pipe system can not provide the cooling capacity, the mechanical refrigerating device provides all the cooling capacity required by the machine room.
2. The novel machine room air conditioning system as claimed in claim 1, further comprising a heat pipe condenser fan and a mechanical refrigeration unit condenser fan.
3. The novel machine room 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. The novel machine room air conditioning system as claimed in claim 1, wherein the first refrigerant inlet of the heat exchanger is in fluid communication with the outlet of the heat pipe condenser, and the first refrigerant outlet is in fluid communication with the refrigerant inlet of the interior evaporator through a refrigerant pipeline via a flow regulating device; the second refrigerant inlet is in fluid communication with a refrigerant outlet of the mechanical refrigeration throttling device, and the second refrigerant outlet is in fluid communication with a suction port of the mechanical refrigeration compressor.
5. The novel machine room air conditioning system as claimed in claim 1, wherein the compressor can be a single fixed frequency compressor or a plurality of fixed frequency compressors connected in parallel, or a single variable frequency compressor or a plurality of variable frequency compressors connected in parallel; or a combination of at least one variable frequency compressor and at least one fixed frequency compressor.
6. The novel machine room air conditioning system as claimed in claim 1, wherein the heat pipe condenser adopts an air cooling mode or an evaporative cooling mode.
7. The novel machine room air conditioning system as claimed in claim 1, wherein refrigeration accessories such as a gas-liquid separator, a liquid storage tank, a drying filter and the like are arranged in the pipeline of the mechanical refrigeration device.
8. The novel machine room air conditioning system as claimed in claim 1, wherein refrigeration accessories such as a liquid accumulator, a drying filter and the like are arranged in the refrigerant pipeline.
9. The novel machine room air conditioning system as claimed in claim 1, wherein the heat exchanger is a plate heat exchanger or a shell and tube heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021056108.XU CN212457135U (en) | 2020-06-10 | 2020-06-10 | Novel machine room air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021056108.XU CN212457135U (en) | 2020-06-10 | 2020-06-10 | Novel machine room air conditioning system |
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| CN212457135U true CN212457135U (en) | 2021-02-02 |
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| CN202021056108.XU Active CN212457135U (en) | 2020-06-10 | 2020-06-10 | Novel machine room air conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503585A (en) * | 2021-07-13 | 2021-10-15 | 北京突破智能科技有限公司 | Novel energy-saving air conditioning system |
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- 2020-06-10 CN CN202021056108.XU patent/CN212457135U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503585A (en) * | 2021-07-13 | 2021-10-15 | 北京突破智能科技有限公司 | Novel energy-saving air conditioning system |
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