CN107062467B - Novel heat pipe backplate air conditioning system - Google Patents
Novel heat pipe backplate air conditioning system Download PDFInfo
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- CN107062467B CN107062467B CN201710078944.4A CN201710078944A CN107062467B CN 107062467 B CN107062467 B CN 107062467B CN 201710078944 A CN201710078944 A CN 201710078944A CN 107062467 B CN107062467 B CN 107062467B
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- heat exchanger
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- condenser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
- F24F5/0021—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice using phase change material [PCM] for storage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a novel heat pipe back plate air conditioning system which comprises at least one set of condenser, a plurality of cabinets and back plate air conditioners in the number corresponding to the number of the cabinets, wherein the cabinets are connected in parallel in sequence, the adjacent cabinets are in series connection, and only the outermost cabinet is provided with a sealing side plate; the back plate air conditioner is correspondingly arranged on the back surface of the cabinet and comprises a heat exchanger, a fan, a temperature and humidity sensor and a control part, the heat exchanger comprises a hot end and a cold end, the hot end is arranged in the cabinet and is provided with a liquid inlet and a return air outlet and is circularly communicated with the cold end arranged in an external environment through a pipeline, the fan is arranged in the cabinet and is used for forcibly cooling the airflow flowing through the cabinet through the hot end of the heat exchanger, and the temperature and humidity sensor is connected with the control part; the condenser is arranged in an external environment, and the cold end of the heat exchanger of the back plate air conditioner is in heat exchange with the condenser. The invention solves the heat dissipation problem of the high-heat-density cabinet, and has higher cooling efficiency and lower energy consumption.
Description
Technical Field
The invention belongs to the technical field of refrigeration of air conditioning units, and particularly relates to an integrated cabinet integrating air conditioning, power distribution and server.
Background
In recent years, two major issues of data center heat dissipation: the heat dissipation problem of high heat density occasion and how to realize the energy-conserving operation of data center.
High heat density aspect: in recent years, with the development of data centers, the heat density of a single cabinet of the data center is higher and higher, which reaches 15 kW/cabinet or even higher, and the heat dissipation problem of the high-heat-density machine room is difficult to solve by adopting the traditional direct expansion type machine room air conditioner or chilled water machine room air conditioner, and a hot spot is easily generated locally.
In the aspect of energy consumption, along with the development of a data center, the larger the heat is, the larger the air quantity is correspondingly, and a larger air supply system is adopted in the aspect of adopting a traditional machine room air conditioner; because the air supply distance is larger, the pressure head loss of the air supply is also larger, the power consumption of the fan is greatly increased, extra heat load is also brought, and the power consumption of the fan reaches 10% of the heat load of the machine room under partial conditions.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the existing problems and defects, the invention aims to provide a novel heat pipe backboard air conditioning system, which solves the heat dissipation problem of a high-heat-density cabinet, and has the advantages of higher cooling efficiency and lower energy consumption.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the technical scheme that: a novel heat pipe backboard air conditioning system comprises at least one set of condenser, a plurality of cabinets and backboard air conditioners with the number corresponding to that of the cabinets, wherein the cabinets are connected in sequence side by side, the adjacent cabinets are in series connection, and only the outermost cabinet is provided with a sealing side plate; the back plate air conditioner is correspondingly arranged on the back surface of the cabinet and comprises a heat exchanger, a fan, a temperature and humidity sensor and a control part, a refrigerant flows in the heat exchanger, the heat exchanger comprises a hot end and a cold end, the hot end is arranged in the cabinet and provided with a liquid inlet and a return air outlet and is circularly communicated with the cold end arranged in an external environment through a pipeline, the fan is arranged in the cabinet and forces airflow flowing through the cabinet to cool the airflow through the hot end of the heat exchanger, and the temperature and humidity sensor is connected with the control part; the condenser is arranged in an external environment and is provided with a condenser water inlet and a condenser water outlet, and the cold end of the heat exchanger of the back plate air conditioner is in heat exchange with the condenser.
Preferably, the heat exchanger in the adjacent cabinet is respectively communicated with the two sets of condensers.
Preferably, the condenser is a shell-and-tube heat exchanger or a plate heat exchanger.
Preferably, the heat exchanger is a finned tube heat exchanger or a microchannel heat exchanger.
Preferably, the installation height of the condenser exceeds the bottom of the back plate air conditioner by at least 1.5 meters, or a refrigerant pump is arranged on a pipeline between the cold end and the hot end of the heat exchanger.
Preferably, the hot end of the heat exchanger is of a single coil structure.
Preferably, the heat exchanger further comprises a cabinet back plate frame which is arranged on the back face of the cabinet and is hinged with the cabinet back plate frame, the hot end of the heat exchanger is arranged on the cabinet back plate frame, and the fans are induced fans which are arranged on the outer layer of the hot end of the heat exchanger and are arranged in a matrix mode.
Preferably, the pipeline that the return air outlet of heat exchanger is connected with the condenser is the return air pipeline, the return air pipeline includes inner tube and the protective sheath of parcel outside the inner tube, the pipe diameter of inner tube is the cycle gradual change, and the one end pipe diameter of being connected with the condenser is greater than the pipe diameter with the link of heat exchanger.
Preferably, the inner wall of the inner pipe of the air return pipeline is provided with a sponge copper layer.
Has the advantages that: compared with the prior art, the invention has the following advantages: the backplate air conditioner utilizes the principle of heat pipe, installs in the back door of rack, and the rack is directly pressed close to the air conditioner, will effectively solve above-mentioned problem: 1) the heat dissipation problem of a high-heat-density cabinet is solved, and the conventional back plate air conditioner can provide a solution for the 15 kW/cabinet occasion; 2) the cooling scheme close to a cold source is adopted, so that the power of the fan is greatly reduced, and the reduction of the power of the fan reaches up to 75 percent; 3) by adopting a cooling method close to a cold source, the return air temperature is improved, and the heat exchange efficiency is correspondingly increased.
Drawings
FIG. 1 is a schematic structural diagram of a heat pipe backplane air conditioning system according to the present invention;
FIG. 2 is a schematic structural view of a rear panel air conditioner according to the present invention;
fig. 3 is a schematic structural diagram of the air return duct according to the present invention.
The system comprises 1-a water-cooled condenser A, 2-a water outlet of the water-cooled condenser A, 3-a water inlet of the water-cooled condenser A, 4-a water-cooled condenser B, 5-a water outlet of the water-cooled condenser B, 6-a water inlet of the water-cooled condenser B, 7-a refrigerant return pipeline of the water-cooled condenser A, 8-a refrigerant liquid inlet pipeline of the water-cooled condenser A, 9-a refrigerant liquid inlet pipeline of the water-cooled condenser B, 10-a refrigerant return pipeline of the water-cooled condenser B, 11-a refrigerant pump unit A, 12-refrigerant pump units B, 13-inner pipes, 14-a protective sleeve and 15-a sponge copper layer.
Detailed Description
The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.
As shown in fig. 1 and 2, the novel heat pipe back panel air conditioning system of the present invention includes 2 sets of condensers, a plurality of cabinets and back panel air conditioners in a number corresponding to the cabinets, wherein the cabinets are connected in parallel in sequence, and the adjacent cabinets are in a series connection design, such that air flow series flow is facilitated, and only the outermost cabinet is provided with a sealing side panel for sealing.
The back plate air conditioner is correspondingly arranged on the back surface of the cabinet and comprises a heat exchanger, a fan, a temperature and humidity sensor and a control component, a refrigerant flows in the heat exchanger, the heat exchanger comprises a hot end and a cold end, the hot end is arranged in the cabinet and provided with a liquid inlet and a return air outlet and is circularly communicated with the cold end arranged in an external environment through a pipeline, the fan is arranged in the cabinet and forces airflow flowing through the cabinet to cool the airflow through the hot end of the heat exchanger, and the temperature and humidity sensor is connected with the control component; the condenser is arranged in an external environment and is provided with a condenser water inlet and a condenser water outlet, and is used for circulating condensate to further cool the cold end of the heat pipe, namely, the refrigerant in the heat pipe is liquefied and cooled to flow back to the hot end arranged on the back of the cabinet, and the refrigerant is gasified to absorb heat in the heat exchange process of hot air formed by heat dissipation of the cabinet to form gas-liquid mixture, and then the gas-liquid mixture enters the condenser through a pipeline to be cooled into liquid.
In order to make the refrigerant cooled to liquid state by the condenser flow back to the back panel air conditioner on the back of the cabinet, the installation height of the condenser can be set at a position more than 1.5 meters away from the bottom of the back panel air conditioner. If the installation space is limited, a refrigerant pump can be arranged on a connecting pipeline between the cold end and the hot end of the heat pipe for forced delivery. As shown in fig. 3, the pipeline connecting the return air outlet of the heat exchanger and the condenser is used as a return air pipeline for special treatment: the pipe diameter of the inner pipe of the return air pipeline begins to increase gradually from the connecting end with the heat exchanger, then reduces, and the repeated periodicity appears in proper order, that is to say the pipe diameter is the structure of periodic gradual change. The structure is beneficial to the rapid gasification and heat absorption of the refrigerant in the heat pipe, the refrigerant is reduced in pressure and is easier to gasify in a larger local area of the pipeline entering space, so that the gas phase part of the refrigerant is driven to flow forwards to be beneficial to heat dissipation, and the forward driving force can be prolonged as far as possible due to the periodic gradual change structure, so that the heat absorption efficiency of the refrigerant is accelerated. Meanwhile, the sponge copper layer on the inner wall of the inner tube has enough surface area to absorb the reflux liquid of the gas-phase refrigerant.
The air supply mode adopted by the invention is that hot air flow passing through the cabinet server is exhausted from the cabinet after being cooled by the heat pipes in the back plate air conditioner under the suction of the fans arranged in the matrix. The heat pipe conveys heat from the hot end to the cold end, and the heat is discharged after being cooled by the condenser to obtain outdoor ambient air, so that the cold airflow discharged from the cabinet is recycled to enter the cabinet to cool the server.
The low-temperature refrigerant liquid from the water-cooled condenser enters the back plate air conditioner at the rear door of the cabinet through the refrigerant liquid inlet pipeline under the action of height difference/power, absorbs heat in the cabinet in a heat exchanger of the back plate air conditioner, is heated and evaporated, enters the water-cooled condenser through the refrigerant air return pipe, and is condensed into low-temperature refrigerant liquid under the cooling action of chilled water to form the whole circulation.
The two water-cooled condensers can use the same chilled water source and also can use two different chilled water sources.
The rack is placed side by side, and every row of rack all need not to install the side door board except that two racks of outermost need install the side door.
And a back plate air conditioner is arranged at the back door of each cabinet, and the back plate air conditioners of two adjacent cabinets are respectively connected with two different water-cooled condensers. Namely, the back plate air conditioners of each row of cabinets are respectively connected to two different water-cooled condensers according to single and double serial numbers. When one backboard or one water-cooled condenser breaks down, the adjacent backboard can take away the heat of the cabinet where the broken backboard is located, and the function of cross backup is achieved.
The back plate air conditioner consists of a heat exchanger, a fan, a temperature and humidity sensor and a control component. The heat exchanger can be a finned tube heat exchanger and can also be a micro-channel heat exchanger. The fans are 6-24 DC axial fans and have a stepless speed regulation function, on one hand, the fans can automatically regulate speed according to load change so as to ensure energy-saving operation under low load, on the other hand, the fans can play a mutual backup function, and when a certain fan breaks down, other fans can supplement air volume through a mode of automatically increasing rotating speed, so that the refrigeration requirement is met.
The installation height of the water-cooled condenser is more than 1.5m higher than the top of the back plate air conditioner; if the height installation requirements cannot be met, a refrigerant pump unit can be added to the liquid circuit.
The back plate air conditioner is arranged at the rear door of the cabinet, and hot air blown out of the cabinet directly passes through the heat exchanger coil of the back plate air conditioner, so that the air supply distance of the air conditioner is reduced, the mixing of cold air and hot air is reduced, the heat exchange efficiency is improved, the power consumption is reduced, and the effects of energy conservation and consumption reduction are achieved. The invention has the main characteristics that:
each back plate air conditioner adopts a single coil pipe structure form, so that air side resistance is reduced, and fan operation power is reduced;
the back plate air conditioners of two adjacent cabinets are respectively connected with 2 different water-cooled condensers; as shown in the above figures, the back panel air conditioners of the odd-numbered cabinets such as cabinets 1,3,5,7,9 are connected to the water-cooled condenser 1, and the back panel air conditioners of the even-numbered cabinets such as cabinets 2,4,6,8,10 are connected to the water-cooled condenser 2.
The cabinet is not provided with a side plate, and adjacent cabinets can play a role of mutual backup; when one back plate air conditioner breaks down, the heat of the failed cabinet can be taken away by the adjacent left back plate and the right back plate.
Two water-cooled condensers are backed up mutually; when one water-cooled condenser breaks down, the heat of the tail end cabinet can be taken out by the adjacent back plate air conditioner.
The two water-cooled condensers can use the same freezing water source or different freezing water sources.
The two water-cooled condensers can be shell and tube condensers or plate heat exchangers.
And each water-cooled condenser is provided with a manual valve so as to facilitate maintenance.
And the inlet and outlet pipeline of the back plate air conditioner of each cabinet is provided with a valve so as to be convenient for overhauling and maintenance.
Each back plate air conditioner is provided with 6-24 DC fans, PWM stepless speed regulation can be carried out, and the rotating speed of the fan can be automatically regulated according to the load requirement, so that the energy-saving operation of the system is guaranteed. And ensure the mutual backup operation of the fans.
The installation height of the water-cooled condenser is required to be more than 1.5m higher than the upper end of the back plate; when the installation distance cannot meet the requirement, a refrigerant pump unit needs to be added on the liquid pipe.
Claims (8)
1. The utility model provides a novel heat pipe backplate air conditioning system which characterized in that: the air conditioner comprises at least one set of condenser, a plurality of cabinets and back plate air conditioners with the number corresponding to that of the cabinets, wherein the cabinets are connected in sequence side by side, the adjacent cabinets are in a series connection design, and only the outermost cabinet is provided with a sealing side plate; the back plate air conditioner is correspondingly arranged on the back surface of the cabinet and comprises a heat exchanger, a fan, a temperature and humidity sensor and a control part, a refrigerant flows in the heat exchanger, the heat exchanger comprises a hot end and a cold end, the hot end is arranged in the cabinet and provided with a liquid inlet and a return air outlet and is circularly communicated with the cold end arranged in an external environment through a pipeline, the fan is arranged in the cabinet and forces airflow flowing through the cabinet to cool the airflow through the hot end of the heat exchanger, and the temperature and humidity sensor is connected with the control part; the condenser is arranged in an external environment and is provided with a condenser water inlet and a condenser water outlet, and the cold end of the heat exchanger of the back plate air conditioner realizes heat exchange with the condenser;
the pipeline that the return air export of heat exchanger and condenser are connected is the return air pipeline, the return air pipeline includes the inner tube and wraps up the protective sheath of outer outside of tubes including, the pipe diameter of inner tube is the cycle gradual change, and the one end pipe diameter of being connected with the condenser is greater than the pipe diameter with the link of heat exchanger.
2. The novel heat pipe back plate air conditioning system as claimed in claim 1, wherein: the heat exchanger in the adjacent cabinet is respectively communicated with the two sets of condensers.
3. The novel heat pipe back plate air conditioning system as claimed in claim 1, wherein: the condenser is a shell-and-tube heat exchanger or a plate heat exchanger.
4. The novel heat pipe back plate air conditioning system as claimed in claim 1, wherein: the heat exchanger is a finned tube heat exchanger or a micro-channel heat exchanger.
5. The novel heat pipe back plate air conditioning system as claimed in claim 1, wherein: the installation height of the condenser exceeds the bottom of the back plate air conditioner by at least 1.5m, or a refrigerant pump is arranged on a pipeline between the cold end and the hot end of the heat exchanger.
6. The novel heat pipe back plate air conditioning system as claimed in claim 1, wherein: the hot end of the heat exchanger is of a single coil pipe structure.
7. The novel heat pipe back plate air conditioning system as claimed in claim 1, wherein: the heat exchanger is characterized by further comprising a cabinet back plate frame which is arranged on the back face of the cabinet and hinged to the cabinet back plate frame, the hot end of the heat exchanger is arranged on the cabinet back plate frame, and the draught fans are arranged on the outer layer of the hot end of the heat exchanger and are arranged in a matrix mode.
8. The novel heat pipe back plate air conditioning system as claimed in claim 1, wherein: and the inner wall of the inner pipe of the air return pipeline is provided with a sponge copper layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710078944.4A CN107062467B (en) | 2017-02-14 | 2017-02-14 | Novel heat pipe backplate air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710078944.4A CN107062467B (en) | 2017-02-14 | 2017-02-14 | Novel heat pipe backplate air conditioning system |
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| CN107062467A CN107062467A (en) | 2017-08-18 |
| CN107062467B true CN107062467B (en) | 2022-04-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057134B (en) * | 2018-01-18 | 2021-07-20 | 盾安汽车热管理科技有限公司 | Heat pipe back plate refrigerating system and control method thereof |
| CN111811116A (en) * | 2020-07-07 | 2020-10-23 | 北京丰联奥睿科技有限公司 | Configuration method of multi-connected air conditioning system |
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| CN106332514A (en) * | 2015-06-26 | 2017-01-11 | 上海交通大学 | Heat pipe cooling system for high-heat density cabinet |
| CN206531220U (en) * | 2017-02-14 | 2017-09-29 | 南京佳力图机房环境技术股份有限公司 | A kind of new heat pipe backboard air-conditioning system |
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2017
- 2017-02-14 CN CN201710078944.4A patent/CN107062467B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201108989D0 (en) * | 2011-05-27 | 2011-07-13 | Semper Holdings Ltd | Cooling unit and cooling system |
| CN102883581A (en) * | 2011-07-14 | 2013-01-16 | 中能深思（北京）节能技术有限公司 | Heat pipe cooling system for server cabinet |
| CN203896652U (en) * | 2014-05-30 | 2014-10-22 | 北京中普瑞讯信息技术有限公司 | Backboard heat pipe air conditioner |
| CN106332514A (en) * | 2015-06-26 | 2017-01-11 | 上海交通大学 | Heat pipe cooling system for high-heat density cabinet |
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