CN115426851B - Cabinet cooling system based on pulsating heat pipe - Google Patents
Cabinet cooling system based on pulsating heat pipe Download PDFInfo
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- CN115426851B CN115426851B CN202211162709.2A CN202211162709A CN115426851B CN 115426851 B CN115426851 B CN 115426851B CN 202211162709 A CN202211162709 A CN 202211162709A CN 115426851 B CN115426851 B CN 115426851B
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- 238000001816 cooling Methods 0.000 title claims abstract description 47
- 238000009833 condensation Methods 0.000 claims description 12
- 230000005494 condensation Effects 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 230000003075 superhydrophobic effect Effects 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
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- 230000001965 increasing effect Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20309—Evaporators
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20318—Condensers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/208—Liquid cooling with phase change
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a cabinet cooling system based on a pulsating heat pipe. According to the invention, the pulsating heat pipe is formed by directly processing the transversely and longitudinally staggered pipelines in the wall surface of the cabinet, and the rib plate with the cooling cavity is arranged at one side of the cabinet and is used as the cold source end of the pulsating heat pipe, so that the heat exchange rate between the cabinet and the outside is improved, and compared with the traditional cooling means, the required environmental temperature can be higher, so that the refrigerating pressure of an air conditioner of a machine room is reduced.
Description
Technical Field
The invention belongs to the technical field of cabinet cooling, and particularly relates to a cabinet cooling system based on a pulsating heat pipe.
Background
With the rapid development of computing-intensive applications such as artificial intelligence, internet of things, cryptocurrency, AR/VR, and the like, the increasing computing demands have enabled data centers to have the development characteristics of "high performance, high density, and high energy consumption. The densely arranged high-power servers generate a large amount of heat, and if the high-power servers cannot be cooled effectively in time, the server is down due to temperature rise caused by heat aggregation, and the server is damaged due to PCB failure. The cabinet serving as a server carrier is not only used for auxiliary power supply, but also faces the challenge of high-load heat dissipation.
The heat dissipation effect of the cabinet plays an important role in reliable and stable operation of the server, and the current cabinet heat dissipation technology is mainly divided into two types, namely passive cooling and active cooling. Except that a small number of data centers can rely on natural environment for heat dissipation by virtue of geographical advantages (e.g., the alembic portion of data centers employ the deep lake water cooling of the kiloisland lake). Most large data centers generally adopt active cooling, that is, refrigeration equipment (commonly called precision air conditioner) is arranged in a machine room to cool a cabinet.
However, the amount of electricity required to maintain the room at a lower temperature level (10-20 ℃) is quite dramatic. According to the statistics of China energy authorities, 2021, the cabinet of the data center of China has more than 415 ten thousand frames, the total power consumption reaches 2166 hundred million kilowatt-hours, the share of the cooling part reaches 40%, and the carbon emission is converted into about 1.35 hundred million tons. Therefore, how to improve the cooling efficiency of the cabinet and reduce the energy consumption of the part is of great significance to the realization of the strategic goals of carbon peak and carbon neutralization.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a cabinet cooling system based on a pulsating heat pipe, which is used for improving the cabinet cooling efficiency and solving the problem of high energy consumption of cabinet cooling.
The present invention achieves the above technical object by the following technical means.
A cabinet cooling system based on pulsating heat pipes: the pulsation heat pipe is arranged in the cabinet, a plurality of rib plates are arranged on one side of the cabinet, and cooling cavities communicated with the pulsation heat pipe are arranged in the rib plates.
Further, the pulsating heat pipe is arranged inside the wall surface of the cabinet, the charged working medium in the pulsating heat pipe is R410a, and the liquid filling rate is 40%.
Further, the pulsating heat pipe comprises a flow pipe and parallel pipes, wherein a plurality of flow pipes in the horizontal wall surface are arranged from one end far away from the rib plate to the other end, a plurality of flow pipes in the vertical wall surface are vertically arranged, and parallel pipes are respectively arranged in each wall surface to communicate the plurality of flow pipes.
Further, a plurality of parallel pipes are arranged in the same wall surface, wherein the parallel pipes at two ends in the horizontal wall surface are dense, and the parallel pipes in the middle area are sparse.
Further, the flow pipes in each wall surface are distributed at equal intervals, and the center distance between every two adjacent flow pipes is 6mm.
Further, the sections of the flow pipe and the parallel pipe are square.
Further, the diameter of the parallel pipe is larger than that of the flow pipe, wherein the equivalent diameter of the parallel pipe is 1.8mm, the equivalent diameter of the flow pipe is 1.2mm, and the parallel pipe and the flow pipe are connected by a horn pipe with a quadrangular frustum structure.
Further, in the pulsating heat pipe, a part positioned in the outer vertical surface of the cabinet is a condensation section, the rest part is an evaporation section, the condensation section and the cooling cavity adopt super-hydrophobic coatings, and the evaporation section adopts super-hydrophilic coatings.
Further, one side of each rib plate far away from the cabinet is covered with a wind shielding plate, an air channel is formed between each rib plate, a fan is arranged at the lower end of the air channel, a gas collecting cover is arranged at the upper end of the air channel, and the gas collecting cover is connected with an exhaust fan through an exhaust pipe.
Further, the exhaust fan is arranged outside the machine room, and a precise air conditioner and a fresh air system are further arranged in the machine room, wherein an air outlet of the air conditioner is positioned on the ground.
The beneficial effects of the invention are as follows:
(1) The invention provides a cabinet cooling system based on a pulsating heat pipe, which is characterized in that the pulsating heat pipe is formed by directly processing a pipeline which is transversely and longitudinally staggered in the wall surface of the cabinet, and a ribbed plate with a cooling cavity is arranged at one side of the cabinet and is used as a cold source end of the pulsating heat pipe, so that the heat exchange rate of the cabinet and the outside is improved, and compared with the traditional cooling means, the required ambient temperature can be higher, thereby reducing the refrigerating pressure of an air conditioner of a machine room.
(2) The pulsating heat pipes of the cabinet cooling system are arranged in parallel, and meanwhile, the reducing design is adopted, so that unidirectional flow force and mixing of working media can be enhanced, and the heat transfer performance of the heat pipes is improved; in addition, the pulsating heat pipe adopts a pipeline structure with a square section, and a super-hydrophobic coating and a super-hydrophilic coating are respectively arranged on the condensing section and the evaporating section, so that the working medium is promoted to generate phase change, and the heat resistance of the pulsating heat pipe is reduced.
(3) In the cabinet cooling system, the fan and the exhaust pipe facility are matched with the air conditioner and the fresh air system, so that the rib plate is cooled by using cold air with lower temperature at the ground of the machine room, and most of heat of the exchanged cabinet is discharged to the outside of the machine room, thereby further reducing the refrigerating pressure of the air conditioner and greatly reducing the electric energy consumed by refrigerating the machine room.
Drawings
FIG. 1 is a block diagram of a cabinet cooling system of the present invention;
FIG. 2 is a block diagram of a cabinet in accordance with the present invention;
FIG. 3 is a schematic diagram of the arrangement of the pipes in the cabinet according to the present invention;
FIG. 4 is a schematic three-dimensional view of the pulsating heat pipe channel cavity in the cabinet of the present invention;
FIG. 5 is a schematic diagram of the connection relationship of pipes of different diameters in the pulsating heat pipe of the present invention.
Reference numerals:
1-a cabinet; 2-rib plates; 21-a cooling chamber; 3-an air shielding plate;
4-piping; 41-a runner pipe; 42-parallel pipes; 43-a horn;
5-a fan; 6-precise air conditioning; 71-a gas-collecting hood; 72-exhaust pipe;
73-an exhaust fan; 8-fresh air system.
Detailed Description
Embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
1. Description of the Structure
As shown in the cabinet 1 of fig. 2, a wind shielding plate 3 is arranged on one side of the cabinet 1, the cabinet 1 is connected with the wind shielding plate 3 through a plurality of rib plates 2, the rib plates 2 are vertically arranged, and the rib plates 2 are distributed at equal intervals; so that a vertical air duct is formed between the ribs 2.
A pulsating heat pipe is provided in the cabinet 1 as shown in fig. 3 and 4, specifically: the inside of the wall surface of the cabinet 1 is provided with a pipeline 4 which is staggered horizontally and vertically. The pipe 4 comprises a flow pipe 41 and a parallel pipe 42. The flow pipes 41 in the same wall are arranged at equal intervals, and the center-to-center spacing between every two adjacent flow pipes 41 in the embodiment is 6mm; wherein the flow pipe 41 in the horizontal wall surface is arranged from the end far from the rib plate 2 to the end close to the rib plate 2, and the flow pipe 41 in the vertical wall surface is arranged along the vertical direction. Each parallel pipe 42 is perpendicular to the flow pipe 41 in the same wall surface, so as to communicate each flow pipe 41; the parallel pipes 42 at the two ends far away from and near the rib plate 2 in the horizontal wall surface are denser, the parallel pipes 42 at the middle area are more sparse, the parallel pipes 42 are densely arranged at the junction with the horizontal wall surface in the vertical wall surface at one side connected with the rib plate 2, and a plurality of parallel pipes 42 are uniformly arranged at equal intervals in the vertical wall surfaces at the two sides adjacent to the rib plate 2. The above-mentioned pipeline 4 structure that opens in the wall of cabinet 1 forms the said pulsating heat pipe, wherein the pipeline 4 in five outer vertical surfaces of cabinet 1 (the side that cabinet 1 far away from rib plate 2 is open, so five outer vertical surfaces are) forms the condensation section of the pulsating heat pipe, the pipeline 4 of the condensation section contacts with external cold air directly, thus cool and cool the working medium 4 in the pipeline, the other (in cabinet 1 internal) pipeline 4 forms the evaporation section of the pulsating heat pipe; in addition, due to the addition of the rib plates 2, the condensation phenomenon in the pulsating heat pipe mainly occurs at one side close to the rib plates 2, so that the invention densely arranges a plurality of parallel pipes 42 at the juncture of the horizontal wall surface and the vertical wall surface at the side, thereby being beneficial to improving the mixing of working media and improving the heat transfer and heat dissipation capability. The working medium (liquid or gaseous substance flowing in the pipeline 4) in the pulsating heat pipe is R410a, and the liquid filling rate is 40%.
The rib plates 2 are arranged at intervals of 12mm, a plurality of cooling cavities 21 are formed in each rib plate 2, the cooling cavities 21 are uniformly distributed along the length direction of the rib plate 2, and one side, close to the cabinet 1, of each cooling cavity 21 is connected with an adjacent pipeline 4; so that the working medium in the pipe 4 can flow into the cooling chamber 21 and sufficiently release heat and cool down in the cooling chamber 21.
Note that: the flow tube 41, the parallel tube 42, the trumpet tube 43 and the cooling chamber 21 in fig. 4 and 5 are all visual illustrations of the cavity alone in three dimensions and are not to be understood as tubes or plates with a certain wall thickness in the conventional concept.
The cross section of the pipeline 4 adopts a square structure, and compared with a circular channel which is usually adopted, the inner angle of the rectangular channel can generate obvious capillary action on working media, which is favorable for phase change of the working media, and four corner areas have higher heat transfer capability.
The pipe diameters of the pipes 4 are unequal, wherein the pipe diameter of the parallel pipe 42 is larger than the pipe diameter of the flow pipe 41, and a horn pipe 43 with a quadrangular frustum structure is adopted as a connection transition at the joint of the two pipes as shown in fig. 5; the reducing design can generate extra capillary driving force for the working medium, thereby improving the driving force of the working medium in the pulsating heat pipe, enhancing the directional movement effect of the gas-liquid plug, namely enhancing the heat transfer capability of the pulsating heat pipe. In addition, the specific pipe diameter value can have a decisive influence on the flow condition of working media, when the pipe diameter is too large, the gravity influence can be increased, and when the pipe diameter is too small, the viscous force can be increased; in view of this, the equivalent diameter of the flow tube 41 is set to 1.2mm and the equivalent diameter of the parallel tube 42 is set to 1.8mm in the present invention.
In the above-mentioned pipeline 4, the inner wall surface of pipeline 4 belonging to condensation section and the inner surface of cooling cavity 21 are all made up of super-hydrophobic coating, so that it can promote the condensation section to produce bead condensation, and can prevent the condensation liquid from gathering, so as to attain the goal of reducing condensation heat resistance and reducing flow resistance. On the contrary, the inner wall surface of the pipeline 4 of the evaporation section adopts a super-hydrophilic coating, so that the capillary core effect in the evaporation section can be promoted, the power is provided for the vibration movement of working media, and the occurrence of the phenomenon of dry burning is avoided.
As a cooling system shown in fig. 1, a precision air conditioner 6 (constant temperature and humidity air conditioner) is arranged in a machine room, in which an air conditioner air outlet is provided at the ground; a fan 5 is arranged at the bottom of each cabinet 1, and an air outlet of the fan 5 vertically faces upwards to an air channel between the rib plates 2 and is used for blowing cold air near the ground upwards into the air channel; meanwhile, a gas collecting cover 71 is arranged at the upper end of the air duct and is used for collecting hot air flow blown up by the air duct; each gas-collecting hood 71 is connected with an exhaust pipe 72, the outlet end of the exhaust pipe 72 is connected with an exhaust fan 73, and the exhaust fan 73 is arranged outside the machine room, so that the collected hot air flow is exhausted outside the machine room; in order to keep the internal and external pressure balance of the machine room, a relevant fresh air system 8 may be disposed in the machine room to supplement the machine room with external air, but it should be noted that the air inlet of the fresh air system 8 should be kept at a sufficient distance from the exhaust fan 73 to prevent the hot air with a higher temperature from being re-sucked into the machine room through the fresh air system 8.
2. Effect verification
1. Energy consumption analysis
(1) The heat dissipation of the traditional cabinet is completely cooled by the air conditioning and refrigerating system, and thus, the heat dissipation is only carried out by the heat conduction between the electronic device and the external environment, and the machine room is required to be maintained at a lower temperature. Taking 10 traditional cabinets arranged in a machine room as an example, wherein the waste heat generated by each cabinet is 3000W; in order to stabilize the highest temperature in the cabinet below 55 ℃, the bottom temperature of the machine room needs to be reduced to 17 ℃, and the electric energy required to be consumed by the air conditioner of the machine room in one day is about 381 kW.h calculated by taking the outside air temperature of 26 ℃ as a reference, and the related calculation formula is as follows:
wherein epsilon 17℃ is the refrigeration coefficient of the air conditioner when the temperature is reduced to 17 ℃, and the value is 1.89.
(2) Taking the example that each machine cabinet generates 3000W of waste heat, the outside air temperature is 26 ℃ and the highest temperature of the machine cabinet is stabilized below 55 ℃, when the cooling system is adopted, the temperature of the bottom layer of the machine room is only required to be reduced to 21 ℃ through simulation test; the flow rate of each fan is 1000m 3/h, the temperature T air,out of the gas flowing out of the rib plates is measured to be 28.6 ℃, and therefore the refrigerating capacity saved in the machine room can be calculated:
Wcold＝Cp*(Tair,out-Tair,atom)*Q*η*ρ＝753.7W
Wherein C p is the air constant pressure specific heat capacity, the value is 1.4, T air,atom is the temperature of the air (namely the outside air temperature) sent into a machine room through a fresh air system, specifically 26 ℃, eta is the efficiency of air flowing into the exhaust pipe 72, the value is 0.9, rho is the air density, and the value is 1.29kg/m 3.
Taking 10 cabinets as an example, the electric energy required to be consumed by the machine room air conditioner in one day is as follows:
The higher the temperature of the air conditioner is, the larger the refrigerating coefficient is, but for comparison, epsilon 20℃ is still 1.89 (same as epsilon 17℃).
Therefore, according to the comparison of (1) and (2), when the cooling system is adopted, the electric energy can be saved by 95.76 kW.h on average in theory, and compared with the traditional cooling mode, the cooling system can save the refrigerating power consumption of an air conditioner by 25.1 percent. According to the data listed in the background art, if 5% of data centers are replaced by the cooling system of the invention, 10.9 hundred million degrees of electricity can be saved each year; the electricity quantity is calculated according to 840 g/degree of thermal power carbon emission, and the saved electricity quantity can be converted into the carbon emission quantity of 91.3 ten thousand tons; and if calculated according to city resident electricity price of 0.59 yuan/degree (actual industrial electricity price is higher), the cost of saving 6.4 hundred million yuan is equivalent. Therefore, the cabinet cooling system has remarkable effects on energy conservation and emission reduction.
2. Analysis of heat dissipation
The average temperature of the two sides of the cabinet is 39.5 ℃ through simulation, the average temperature of the top surface of the cabinet is 37.4 ℃, the average temperature of the bottom surface of the cabinet is 39.4 ℃, the average temperature of one side of a rib plate on the back of the cabinet is 43.5 ℃, wherein the other surfaces are natural convection heat dissipation except the side of the rib plate which is subjected to artificial high-speed air flow (the flow of each fan is 1000m 3/h). Based on the calculation, the total heat exchange amount of the two side surfaces of the cabinet is 104W, the heat exchange amount of the top surface of the cabinet is 22.4W, the heat exchange amount of the bottom surface of the cabinet is 13.8W, the heat exchange amount of the rib plate area is 2734.2W, and the rest heat exchange amounts which are not calculated are 125.6W. It can be seen that in the present invention, a substantial portion of the heat is dissipated outwardly through the rib areas.
The conventional pulsating heat pipe is built in a mode of laying a pipeline on the surface of a plate, larger contact thermal resistance exists, and after the pipe diameter is larger than a certain value, gravity influence cannot be ignored, so that a corresponding pump is required to be arranged in the pipeline to provide additional pumping work for working media; if the pump is not provided, it is necessary to arrange the heat pipe in such a manner that the heat source is on the lower side and the heat sink is on the upper side. On the contrary, the invention constructs the pipeline structure of the pulsating heat pipe by directly perforating the inside of the cabinet plate (the concrete processing method can respectively punch mirror symmetry micro-channels on the surfaces of the two thin plates, and then the two plates are spliced and butted under the condition of ensuring sealing), and the pipe diameter can be small (less than 2 mm) because the limiting factors in the aspects of structural strength such as pipe wall thickness and the like are not needed to be considered, thereby meeting the requirement of working medium self-driving. On the basis, the invention selects to arrange the rib plates on the side wall of the cabinet, and the cavity communicated with the pipeline is arranged in the rib plates, so that one side of the rib plates is mainly used as the cold end of the pulsating heat pipe, namely, the heat source and the cold source of the pulsating heat pipe are horizontally and flexibly arranged, the invention is more suitable for the situation of multiple heat sources of the server cabinet, and meanwhile, the air flue between the rib plates ventilates from bottom to top to amplify the 'chimney effect', thereby being capable of promoting the air flow of the machine room with lower energy consumption. As can be seen from the simulation data and the calculation results thereof, the heat exchange capacity of the side surface of the cabinet is far higher than that of the top of the cabinet, and the scheme of arranging the rib plates on the side surface of the cabinet is superior to the traditional pulsating heat pipe arrangement mode that the heat source is arranged below and the cold source is arranged above.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The present invention is not limited to the above-described embodiments, and any obvious modifications, substitutions or variations which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (5)
1. A cabinet (1) cooling system based on pulsating heat pipes, characterized in that: a pulsating heat pipe is arranged in the cabinet (1), a plurality of rib plates (2) are arranged on one side of the cabinet, and cooling cavities (21) communicated with the pulsating heat pipe are arranged in the rib plates (2);
The pulsating heat pipe is arranged in the wall surface of the cabinet (1), the refrigerant filled in the pulsating heat pipe is R410a, and the liquid filling rate is 40%; the pulsating heat pipe comprises a flow pipe (41) and parallel pipes (42), wherein a plurality of flow pipes (41) in the horizontal wall surface are arranged from one end far away from the rib plate (2) to the other end, a plurality of flow pipes (41) in the vertical wall surface are vertically arranged, and the parallel pipes (42) are respectively arranged in each wall surface to communicate the plurality of flow pipes (41); the cross sections of the flow pipe (41) and the parallel pipe (42) are square; the pipe diameter of the parallel pipe (42) is larger than that of the flow pipe (41), wherein the equivalent diameter of the parallel pipe (42) is 1.8mm, the equivalent diameter of the flow pipe (41) is 1.2mm, and the parallel pipe (42) is connected with the flow pipe (41) by a horn pipe (43) with a quadrangular frustum structure;
In the pulsating heat pipe, a part positioned in the outer vertical surface of the cabinet (1) is a condensation section, the rest part is an evaporation section, the condensation section and the inner wall of the cooling cavity (21) adopt super-hydrophobic coatings, and the inner wall of the evaporation section adopts super-hydrophilic coatings.
2. The cabinet (1) cooling system according to claim 1, characterized in that: the parallel pipes (42) in the same wall surface are provided with a plurality of parallel pipes (42), wherein the parallel pipes (42) at the two ends in the horizontal wall surface are relatively dense, and the parallel pipes (42) in the middle area are relatively sparse.
3. The cabinet (1) cooling system according to claim 1, characterized in that: the inner flow pipes (41) in each wall surface are distributed at equal intervals, and the center distance between every two adjacent flow pipes (41) is 6mm.
4. The cabinet (1) cooling system according to claim 1, characterized in that: one side of each rib plate (2) far away from the cabinet (1) is covered with a wind shielding plate (3), an air duct is formed between each rib plate (2), a fan (5) is arranged at the lower end of the air duct, a gas collecting cover (71) is arranged at the upper end of the air duct, and the gas collecting cover (71) is connected with an exhaust fan (73) through an exhaust pipe (72).
5. The cabinet (1) cooling system according to claim 4, characterized in that: the exhaust fan (73) is arranged outside the machine room, and a precise air conditioner (6) and a fresh air system (8) are further arranged in the machine room, wherein an air outlet of the air conditioner is positioned on the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211162709.2A CN115426851B (en) | 2022-09-23 | 2022-09-23 | Cabinet cooling system based on pulsating heat pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211162709.2A CN115426851B (en) | 2022-09-23 | 2022-09-23 | Cabinet cooling system based on pulsating heat pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115426851A CN115426851A (en) | 2022-12-02 |
| CN115426851B true CN115426851B (en) | 2024-05-14 |
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| CN202211162709.2A Active CN115426851B (en) | 2022-09-23 | 2022-09-23 | Cabinet cooling system based on pulsating heat pipe |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201860524U (en) * | 2010-11-05 | 2011-06-08 | 张永红 | Door plate embedded type heat pipe radiating network machine cabinet |
| CN103118522A (en) * | 2013-01-31 | 2013-05-22 | 北京德能恒信科技有限公司 | Cooling system of data center |
| CN104470335A (en) * | 2014-12-11 | 2015-03-25 | 中国航天空气动力技术研究院 | Data center energy-saving cooling system based on heat pipe technology |
| CN105065319A (en) * | 2015-08-28 | 2015-11-18 | 江苏永一泵业科技集团有限公司 | Hot water circulating pump bearing box with cooling cavity |
| CN107197609A (en) * | 2017-06-15 | 2017-09-22 | 北京机械设备研究所 | A kind of closed electronics rack device and assembly method based on micro heat pipe temperature-uniforming plate |
| CN214206242U (en) * | 2021-01-04 | 2021-09-14 | 中铁二院工程集团有限责任公司 | Heat pipe type phase change integrated temperature control cabinet |
-
2022
- 2022-09-23 CN CN202211162709.2A patent/CN115426851B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201860524U (en) * | 2010-11-05 | 2011-06-08 | 张永红 | Door plate embedded type heat pipe radiating network machine cabinet |
| CN103118522A (en) * | 2013-01-31 | 2013-05-22 | 北京德能恒信科技有限公司 | Cooling system of data center |
| CN104470335A (en) * | 2014-12-11 | 2015-03-25 | 中国航天空气动力技术研究院 | Data center energy-saving cooling system based on heat pipe technology |
| CN105065319A (en) * | 2015-08-28 | 2015-11-18 | 江苏永一泵业科技集团有限公司 | Hot water circulating pump bearing box with cooling cavity |
| CN107197609A (en) * | 2017-06-15 | 2017-09-22 | 北京机械设备研究所 | A kind of closed electronics rack device and assembly method based on micro heat pipe temperature-uniforming plate |
| CN214206242U (en) * | 2021-01-04 | 2021-09-14 | 中铁二院工程集团有限责任公司 | Heat pipe type phase change integrated temperature control cabinet |
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| CN115426851A (en) | 2022-12-02 |
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