CN109579100A - A kind of data center's residual heat using device - Google Patents
A kind of data center's residual heat using device Download PDFInfo
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- CN109579100A CN109579100A CN201811253840.3A CN201811253840A CN109579100A CN 109579100 A CN109579100 A CN 109579100A CN 201811253840 A CN201811253840 A CN 201811253840A CN 109579100 A CN109579100 A CN 109579100A
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- Prior art keywords
- heat
- pipe network
- cooling
- heat exchange
- exchange pipe
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
- F24D11/005—Central heating systems using heat accumulated in storage masses water heating system with recuperation of waste heat
Abstract
The present invention, which discloses, discloses a kind of data center's residual heat using device, including cooling pond, data center's workshop and heating network user terminal: being additionally provided with heat-exchanger rig in data center's workshop, heat-exchanger rig includes submerging cooling header, thermic load buffering adjusting unit, water pump and connecting tube；Cooling header is submerged to be formed by cooling down header cabinet, heat source device and vertical circulation heat exchange pipe network；Vertical circulation heat exchange pipe network is parting structure and uses both ends symmetrical structure, and vertical circulation heat exchange pipe network water outlet buffers adjusting unit with thermic load and connect；Apparatus of the present invention optimize the space configuration and the distribution of cooling water working medium flow submerged inside cooling header, provide advantage for dropwise condensation, enhance the ability of the condensation heat transfer section condensing droplet reflux of condensation end；Using phase-change material, realize waste heat store and the heat load adjustment of heat；Water loss meanwhile effectively by water temperature heating to 45 °C -60 °C, as preheating water supply urban heat supplying pipe network.
Description
Technical field
The present invention relates to a kind of residual heat using devices, and in particular to be a kind of to be asked to solve data center's waste heat recycling
Topic and design have bionical minute yardstick condensation Gradient Unit, vertical circulation heat exchange pipe network and thermic load buffering adjust feature
Data center's residual heat using device.
Background technique
Data center is the numerous servers of storage, storage equipment, the industrialization system of the network equipment, is that the typical energy is close
Collection type facility.The appearance that data centre data is stored with the outburst of industry internet technology, government department, enterprise, colleges and universities etc.
Amount demand increases substantially, and so quickly increases, so that demand of the data center to electric power also increases.Currently, in data
The design capacity of central server separate unit cabinet alreadys exceed 25kW, and typical data center's total capacity is about 1000kW, or even can
More than 20,000 kW.In China, the electricity of data center's consumption accounts for 2% or domestic construction total energy consumption of whole society's electric power wastage in bulk or weight
10%, it is equivalent to the electric power production capacity of Three Gorges Dam whole year.So huge electric power energy consumption, will necessarily generate amount of heat.
If these heats without processing, can not only impact environment, but also the energy loss generated can improve data center's entirety
Operation cost.In addition, if the lost fluency of these heats is not high, this closed space of data center can be accumulated in
It is interior, the equipment processing speed of data center is largely effected on, high-temperature work environment also can acceleration equipment aging.Therefore, data are realized
Efficient utilize of center redundancy heat is that an energy saving, protection environment and raising the important of data center operations efficiency are ground
Study carefully project.
Since the average power density of data center's inner facility is every square metre of 3kW, highest can reach every square metre
Therefore the waste heat of data center is used for pre- hot cooling water, and be by the water supplement that preheating water is used for urban heat supplying pipe network by 4kW
One good selection.Urban heat supplying pipe network is by city central heat source (generally heating factory), is to be situated between with steam or hot water
Matter supplies life or production a kind of mode of heat to the user in the whole city or in which a certain area through heating network.This concentration
Energy utilization rate can be improved in the mode of heat supply, energy saving.Further, since central heating mode is easy to carry out scientific management,
The quality that can effectively improve heat supply is easy to implement the management of zonal heat conveying behavior.However, main due to heat supply
Application mode includes building and heating, ventilation, air-conditioning and hot water supply in production process and the heating in life process, dries
The behaviors such as dry, boiling, cleaning, cause hot water or hot steam to have mass loss in use.This water loss, can shadow
Ring the recycling behavior of water in heating pipe network.Further, since the required thermic load in urban heating network is not in Various Seasonal
With, heat load adjustment has uncertainty.Therefore, the waste heat of data center is recycled, is used for heating pipe network internal water
Preheating, realize the heat recirculated water supplement in heating pipe network, and open large data center waste heat heat load adjusting device, again to the energy
Using with great value.
Flow distribution of fluid and excellent is successfully applied to by the distinctive comformation theory of living nature (vein network, honeycomb, root arteries and veins etc.)
Dissolve the inspiration for fluid transmission thought of determining, there is the vertical circulation heat exchange pipe network of three-dimensional structural feature to be used as heat for present invention design
The heat exchanger of exchange, it is intended that by multiple accurate assignment of traffic, optimize energy transmission of the cooling water in flow process, and increase
The smoothness of strong cooling water circulation.Also, devise the device that heat load adjustment is carried out using phase-change material.
In addition, it is applied to the inspiration of energy field by special wetability function surface possessed by bionical wellability surface,
The present invention devises a kind of bionical minute yardstick condensation Gradient Unit for having multizone hydrophobe characteristic, and the bionical minute yardstick is cold
Solidifying Gradient Unit is arranged in the outer surface of vertical circulation heat exchange pipe network, provides advantage for dropwise condensation, enhances condensation end
Condensation heat transfer ability；Gradient micro groove structure can promote the condensed drop reflux of phase transformation heat exchange working medium simultaneously, so that work
Matter circulation is more smooth, enhances heat transfer efficiency and ability with this, effectively facilitates working medium circulation and enhancing heat transfer energy it is expected that reaching
The purpose of power.
Summary of the invention
The technical problem to be solved by the present invention is to can not be utilized for the waste heat generated in data center's operational process and
There is water loss in urban heat supplying pipe network, and provide a kind of with bionical minute yardstick condensation Gradient Unit, vertical circulation
Heat exchange pipe network and thermic load buffering adjust data center's residual heat using device of feature.The device utilizes vertical circulation heat exchange
Pipe network is provided advantage for dropwise condensation, is enhanced by repeatedly accurate assignment of traffic, bionical minute yardstick condensation Gradient Unit
The ability of the condensation heat transfer section condensing droplet reflux of condensation end；In addition, the water in circulation line can also be by producing with data center
Raw heat carries out heat exchange, and heat caused by data center's heat source is pumped into heat-exchange system, is effectively added water temperature
Water loss of the heat to 45 DEG C -60 DEG C, as preheating water supply urban heat supplying pipe network；Also, increase thermic load in circulation line
Buffering adjusts unit, realizes the buffering of data center's heat and enters the adjusting of heating network heat.
For the skill that the technical issues of existing heat exchanger effectiveness, the present invention is used during solution data center's UTILIZATION OF VESIDUAL HEAT IN
Art scheme is:
A kind of data center's residual heat using device, including cooling pond, data center's workshop and heating network user terminal,
It is characterized by: be additionally provided with heat-exchanger rig in data center's workshop, the heat-exchanger rig include submerge cooling header,
Thermic load buffering adjusts unit, water pump and connecting tube；The cooling header of the submergence is installed on the number by the way of in parallel
Inside the workshop of center；The cooling header of the submergence, thermic load buffering adjust unit and heating network user terminal described in
Water pump and connecting tube are attached, and constitute cooling water-preheating water transfer pipeline；The cooling header of the submergence is by cooling down connection
Box body, cooling header top cover, heat source device and vertical circulation heat exchange pipe network composition, the cooling header cabinet two sides point
It is not provided with cooling water inlet and preheating water out, the vertical circulation heat exchange pipe network are mounted on the cooling header cabinet
It is interior and with the cooling water inlet and preheating water out connect, the heat source device be installed on described in cooling header bottom；
The cooling water loaded in the heat of transformation exchange working medium, with the vertical circulation heat exchange pipe network in the cooling header of the submergence forms heat
Exchange system；The vertical circulation heat exchange pipe network is parting structure and uses both ends symmetrical structure, and one end is assignment of traffic end,
One end is flow collection end, wherein it is branches end that the assignment of traffic, which brings out mouth, and it is vertical follow that the assignment of traffic, which brings out mouth,
Ring heat exchange pipe network water inlet, flow collection end import are branches end, and it is vertical circulation that the flow collection, which brings out mouth,
Heat exchange pipe network water outlet；The assignment of traffic end is connect with two branches ends of the flow mobile phone terminal, described vertical to follow
Ring heat exchange pipe network water inlet is connect with the cooling pond, the vertical circulation heat exchange pipe network water outlet and the thermic load
Buffering adjusts unit connection；The assignment of traffic end is the n grade allocation unit of every grade of 3 branches, n-th grade with (n-1)th grade of length
Relationship is Ln=3-1/αLn-1, wherein α is length dimension, 3 >=α >=2；N-th grade is D with (n-1)th grade of diameter Relationshipn=3-1/β
Dn-1, wherein β is diametral dimension, 3 >=β >=2；The vertical circulation heat exchange pipe network outer surface is to have multizone hydrophobe spy
Property bionical minute yardstick condense Gradient Unit array；The bionical minute yardstick condensation Gradient Unit has multizone hydrophobe characteristic
And gradient micro groove structure；The thermic load buffering adjusts unit and adjusts unit by multistage hollow grate bracket, thermic load buffering
Shell and phase change heat storage material are constituted, and the multistage hollow grate bracket is located at thermic load buffering and adjusts unit housings
Interior, the phase change heat storage material is poured in the thermic load buffering and adjusts in unit housings and outside the multistage hollow grate bracket
Surface contact exchanges heat；The multistage hollow grate bracket includes internal accumulation of heat aquaporin and internally positioned accumulation of heat aquaporin
The interface at both ends；One interface of multistage hollow grate bracket is connect with the vertical circulation heat exchange pipe network water outlet, multistage
Another interface of hollow grate bracket is connect through connecting tube with the heating network user terminal.
The bionical minute yardstick condensing unit includes hemispherical protuberances micro-structure, prism-frustum-shaped micro-structure and gradient microflute；
The hemispherical protuberances micro-structure is water-wetted surface, and contact angle is less than 70 °；The prism-frustum-shaped micro-structure and the processing of gradient microflute
For hydrophobic surface, contact angle is greater than 120 °.
The multistage hollow grate bracket is classification laminated structure, the piece of classification the laminated structure previous stage and rear stage
The length ratio of shape structure is M-1/A, the ratio between width is M-1/B, wherein M be every grade of skeleton branches number and more than or equal to 2 it is whole
Number, A is length index and 3 >=A >=2, B are breadth index and 3 >=B >=2；Bifurcated between previous stage and rear stage laminated structure
90 degree of angle.
The phase transformation heat exchange working medium is electronics fluorination liquid.
Data center's residual heat using device of the present invention, bionical minute yardstick condensation Gradient Unit have multizone hydrophobe characteristic
And gradient micro groove structure, pearl condensation can be strengthened, and condensing droplet is transported in real time；Cooling header is submerged using side in parallel
Formula is installed on inside the data center, improves equipment entirety heat exchanger effectiveness and maximum thermal exchange thermal capacity.
Vertical circulation heat exchange pipe network fully considers that the cooling header inner space of submergence is distributed rationally, is based on comformation theory,
Using uniform 3 branch design, while the optimization distribution for realizing flowing, in enhanced tube in cooling water and the cooling header of submergence
Heat exchange between portion's phase transformation heat exchange working medium.
The outer surface of vertical circulation heat exchange pipe network is the bionical minute yardstick condensation gradient for having multizone hydrophobe characteristic
Cell array.Have the hemispherical protuberances micro-structure of water-wet behavior, the phase transformation heat exchange working medium of gasification can be condensed, and in protrusion
Droplet is pooled at structure, subsequent droplet gradually pools larger drop.Since prism-frustum-shaped micro-structure has certain slope
Degree, while under the effect of gradient micro groove structure, drop is detached from hydrophilic hemispherical protuberances micro-structure under the gradient and gradient effect,
And it is carried and is detached from bionical minute yardstick condensing unit.Bionical minute yardstick condenses Gradient Unit array, and pearl condensation is promoted to generate, and
It is rapidly separated condensing surface, realizes the purpose of enhanced heat exchange.
Thermic load buffering adjusts unit and is based on solid-liquid phase change realization thermic load accumulation of heat and adjusting, by multistage hollow grate branch
Frame, thermic load buffering adjust unit housings, accumulation of heat aquaporin, classification laminated structure and filling and the phase-change material group in shell
At.Phase change heat storage material is placed between shell and multistage hollow grate bracket, and accumulation of heat aquaporin is arranged in multistage hollow grate branch
Inside frame, the flowing of accumulation of heat water is realized.In order to extend the heat transfer area between accumulation of heat water and phase-change material, optimal flowing is obtained
Heat transfer effect, each level length for being classified laminated structure are generated with width by certain proportion relationship.Its previous stage and rear stage
The length ratio of laminated structure is M-1/A, the ratio between width is M-1/B, wherein M be every grade of skeleton branches number and more than or equal to 2 it is whole
Number, A is length index and 3 >=A >=2, B are breadth index and 3 >=B >=2；Bifurcated between previous stage and rear stage laminated structure
90 degree of angle.
Cooling header is submerged using being installed on inside data center by the way of in parallel, raising equipment entirety heat exchanger effectiveness with
And maximum thermal exchange thermal capacity.Phase transformation heat exchange working medium is low transformation temperature and the liquid that performance influence will not be caused on electronic component
State material can be electronics fluorination liquid.Heat source device is the origin of heat of data center, including server, storage equipment and net
Network equipment etc..The vertical circulation heat exchange pipe network metal strong using thermal conductivity, such as copper, aluminium.Submerge cooling header and connection
Pipe coats thermal insulation material, reduces equipment and extraneous heat exchange, improves economy.
The utility model has the advantages that
A kind of data center's residual heat using device of the present invention, the device are based on comformation theory and devise vertical circulation heat exchange
Pipe network optimizes the space configuration and cooling water working medium flow point submerged inside cooling header using uniform 3 branch design
Match；The bionical minute yardstick condensation Gradient Unit of pipe network outer surface can provide advantage for dropwise condensation, enhance the solidifying of condensation end
The ability of knot heat exchange section condensing droplet reflux；Thermic load buffering adjusts unit and uses using phase-change material, realizes waste heat
It stores and the heat load adjustment of heat；Water in circulation line can also carry out heat exchange by the heat generated with data center,
Heat caused by data center's heat source is pumped into heat-exchange system, effectively by water temperature heating to 45 DEG C -60 DEG C, as preheating
The water loss of water supply urban heat supplying pipe network.
Detailed description of the invention
A kind of data center's residual heat using device system diagram of Fig. 1.
Fig. 2 submerges cooling header structure chart.
Fig. 3 submerges cooling header internal structure chart.
Fig. 4 vertical circulation heat exchange pipe network schematic diagram (N=4).
Fig. 5 has the heat-exchange tube wall structure figure of bionical minute yardstick condensation Gradient Unit array.
The bionical minute yardstick of Fig. 6 condenses Gradient Unit structure chart.
Fig. 7 thermic load buffering adjusts the diagrammatic cross-section of cellular construction.
Fig. 8 multistage hollow grate support schematic diagram.
1. cooling pond in figure；2. submerging cooling header；3. data center's workshop；4. water pump；5. connecting tube；6. heating tube
Network users end；7. thermic load buffering adjusts unit；8. cooling water inlet；9. preheating water out；10. cooling header cabinet；11. cold
But header top cover；12. heat source device；13. vertical circulation heat exchange pipe network；14. bionical minute yardstick condenses Gradient Unit；15. half
Ball bumps micro-structure；16. prism-frustum-shaped micro-structure；17. gradient microflute；18. accumulation of heat water inlet；19. accumulation of heat water out；More than 20.
Grade hollow grate bracket；21. thermic load buffering adjusts unit housings；22. accumulation of heat aquaporin；23. being classified laminated structure.
Specific embodiment
It is further described in detail with reference to the accompanying drawing:
Fig. 1 gives system diagram of the invention, a kind of pre- heat utilization device of data center, including cooling pond 1；It submerges cold
But header 2；Data center's workshop 3；Water pump 4；Connecting tube 5；Thermic load buffering adjusts the chief components such as unit 7.Cooling water
Pond 1 and heat supply user end 6 are adjusted by cooling 2 thermic load of the header buffering of submergence in connecting tube 5 and data center's workshop 3 single
Member 7 is connected, wherein connecting tube 5 is provided with water pump 4 for conveying cooling water and preheating water.Particularly, cooling header 2 is submerged
Target heat source device is rapidly cooled using parallel way, and the end in parallel of every level-one with heat load adjustment unit
7 are connected.
Fig. 2 gives the cooling header structure chart of submergence of the invention, the cooling header 2 of the submergence by cooling header cabinet 10 with
And cooling header top cover 11 constitutes support construction, the two sides of cooling header cabinet 10 be respectively arranged with cooling water inlet 8 and
Water out 9 is preheated, realizes the conveying of preheating water after heat exchange.
Fig. 3 gives the internal structure chart of the cooling header of submergence of the invention, and the bottom for submerging cooling header 2 is more heat
Source device 12, top are vertical circulation heat exchange pipe network 13, which is 4 grades of branched structures, which utilizes
Configuration design rule is designed, length dimension α=3 of use, and evenly distributing and optimizing for flow is realized in width dimension β=3
Control.
Fig. 4 gives tool vertical circulation heat exchange pipe network schematic diagram of the invention, and vertical circulation heat exchange pipe network 13 is based on
Comformation theory is designed, and pipe network is 4 grades of branched structures herein.
Fig. 5 gives the heat-exchange tube wall structure figure for having bionical minute yardstick condensation Gradient Unit array of the invention,
It is provided with bionical minute yardstick condensation 14 array of Gradient Unit at heat-exchange tube wall surface, is handed over for strengthening hot steam in vertical circulation heat
Change the condensation at pipe network 13.
Fig. 6 gives bionical minute yardstick condensation Gradient Unit structure chart of the invention, which condenses Gradient Unit packet
Include hemispherical protuberances micro-structure 15；Prism-frustum-shaped micro-structure 16 and gradient microflute 17, wherein hemispherical protuberances micro-structure 15 is parent
Water surface, prism-frustum-shaped micro-structure 16 and gradient microflute 17 are hydrophobic surface.
Fig. 7 gives the diagrammatic cross-section that thermic load buffering of the invention adjusts cellular construction.Thermic load buffering adjusts single
Member includes that thermic load buffering adjusts unit housings 21, multistage hollow grate bracket 20 forms, wherein thermic load buffering adjusts unit
Shell is provided with accumulation of heat water inlet and accumulation of heat water out, is filled with phase change heat storage material in shell.
Fig. 8 gives multistage hollow grate support schematic diagram of the invention, which is by classification piece
Shape structure 23 forms, wherein laminated structure 23 is hollow structure, constitutes accumulation of heat aquaporin 22.
Claims (6)
1. a kind of data center's residual heat using device, including cooling pond, data center's workshop and heating network user terminal,
It is characterized in that: being additionally provided with heat-exchanger rig in data center's workshop, the heat-exchanger rig includes submerging cooling header, heat
Load buffer adjusts unit, water pump and connecting tube；The cooling header of the submergence is installed on the data by the way of in parallel
Inside the workshop of center；The cooling header of the submergence, thermic load buffering adjust unit and heating network user terminal passes through the water
Pump and connecting tube are attached, and constitute cooling water-preheating water transfer pipeline；The cooling header of the submergence is by cooling down header
Cabinet, cooling header top cover, heat source device and vertical circulation heat exchange pipe network composition, the cooling header cabinet two sides difference
It is provided with cooling water inlet and preheating water out, the vertical circulation heat exchange pipe network is mounted in the cooling header cabinet
And connect with the cooling water inlet and preheating water out, the heat source device is installed on the cooling header bottom；Institute
It states the cooling water for submerging and being loaded in the heat of transformation exchange working medium, with the vertical circulation heat exchange pipe network in cooling header and forms hot friendship
Change system；The vertical circulation heat exchange pipe network be parting structure and use both ends symmetrical structure, one end be assignment of traffic end, one
End is flow collection end, wherein it is branches end that the assignment of traffic, which brings out mouth, and it is vertical circulation that the assignment of traffic, which brings out mouth,
Heat exchange pipe network water inlet, flow collection end import are branches end, and it is vertical circulation heat that the flow collection, which brings out mouth,
Exchange pipe network water outlet；The assignment of traffic end is connect with two branches ends of the flow mobile phone terminal, the vertical circulation
Heat exchange pipe network water inlet is connect with the cooling pond, and the vertical circulation heat exchange pipe network water outlet and the thermic load are slow
Reconstitute section unit connection；The assignment of traffic end is the n grade allocation unit of every grade of 3 branches, n-th grade with (n-1)th grade of length pass
System is Ln=3-1/αLn-1, wherein α is length dimension, 3 >=α >=2；N-th grade is D with (n-1)th grade of diameter Relationshipn=3-1/β
Dn-1, wherein β is diametral dimension, 3 >=β >=2；The vertical circulation heat exchange pipe network outer surface is to have multizone hydrophobe spy
Property bionical minute yardstick condense Gradient Unit array；The bionical minute yardstick condensation Gradient Unit has multizone hydrophobe characteristic
And gradient micro groove structure；The thermic load buffering adjusts unit and adjusts unit by multistage hollow grate bracket, thermic load buffering
Shell and phase change heat storage material are constituted, and the multistage hollow grate bracket is located at thermic load buffering and adjusts unit housings
Interior, the phase change heat storage material is poured in the thermic load buffering and adjusts in unit housings and outside the multistage hollow grate bracket
Surface contact exchanges heat；The multistage hollow grate bracket includes internal accumulation of heat aquaporin and internally positioned accumulation of heat aquaporin
The interface at both ends；One interface of multistage hollow grate bracket is connect with the vertical circulation heat exchange pipe network water outlet, multistage
Another interface of hollow grate bracket is connect through connecting tube with the heating network user terminal.
2. a kind of data center's residual heat using device according to claim 1, it is characterised in that: the bionical minute yardstick is cold
Solidifying unit includes hemispherical protuberances micro-structure, prism-frustum-shaped micro-structure and gradient microflute；The hemispherical protuberances micro-structure is parent
Water surface, contact angle is less than 70 °；The prism-frustum-shaped micro-structure and the processing of gradient microflute are hydrophobic surface, and contact angle is greater than
120°。
3. a kind of data center's residual heat using device according to claim 1, it is characterised in that: the multistage hollow grate
Bracket is classification laminated structure, and the length ratio of the laminated structure for being classified laminated structure previous stage and rear stage is M-1/A,
The ratio between width is M-1/B, wherein M be every grade of skeleton branches number and be more than or equal to 2 integer, A be length index and 3 >=A >=2,
B is breadth index and 3 >=B >=2；90 degree of angle of forking between previous stage and rear stage laminated structure.
4. vertical circulation heat exchange pipe network according to claim 1, it is characterised in that: the phase transformation heat exchange working medium is electricity
Son fluorination liquid.
5. vertical circulation heat exchange pipe network according to claim 1, it is characterised in that: the heat source device is data center
Origin of heat, including server, the storage equipment and network equipment.
6. vertical circulation heat exchange pipe network according to claim 1, it is characterised in that: the cooling header of the submergence and company
Adapter tube coats thermal insulation material.
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| CN201811253840.3A CN109579100A (en) | 2018-10-26 | 2018-10-26 | A kind of data center's residual heat using device |
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| CN201811253840.3A CN109579100A (en) | 2018-10-26 | 2018-10-26 | A kind of data center's residual heat using device |
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| CN108280302A (en) * | 2018-01-26 | 2018-07-13 | 清华大学 | A kind of heat supply network hot-fluid computational methods |
| CN110243221A (en) * | 2019-07-10 | 2019-09-17 | 成都赛普瑞兴科技有限公司 | A kind of waste-heat recovery device |
| US20230121635A1 (en) * | 2021-10-14 | 2023-04-20 | Amulaire Thermal Technology, Inc. | Immersion heat dissipation structure having macroscopic fin structure and immersion heat dissipation structure having fin structure |
| RU2810857C1 (en) * | 2023-07-21 | 2023-12-28 | Владимир Николаевич Гавриленко | Heating and hot water supply system |
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