CN119085163A - A compression and heat exchange integrated device for a compression card refrigeration system - Google Patents
A compression and heat exchange integrated device for a compression card refrigeration system Download PDFInfo
- Publication number
- CN119085163A CN119085163A CN202411047750.4A CN202411047750A CN119085163A CN 119085163 A CN119085163 A CN 119085163A CN 202411047750 A CN202411047750 A CN 202411047750A CN 119085163 A CN119085163 A CN 119085163A
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- compression
- heat exchange
- integrated device
- metal
- refrigeration system
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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
- F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a compression heat exchange integrated device of a compression card refrigerating system, which comprises a pressure head, a plurality of metal pipelines, compression card materials, a base and an outer heat preservation layer, wherein the metal pipelines are uniformly distributed at equal intervals, the compression card materials are filled between the metal pipelines to form a cylindrical body, the outer heat preservation layer is wrapped on the outer layer of the cylindrical body, a first flow passage and a second flow passage are respectively arranged in the pressure head and the base, limit holes with the same number as the metal pipelines are arranged below the first flow passage in the pressure head, each limit hole is in sealing connection with the upper end of one metal pipeline, and the lower end of the metal pipeline is communicated with the second flow passage. The invention has higher efficiency.
Description
Technical Field
The invention relates to a compression card refrigeration technology, in particular to a compression heat exchange integrated device of a compression card refrigeration system.
Background
Refrigerating technology is an indispensable technology in modern society and is widely applied to the fields of household appliances, industry, commerce, cold chains, vehicles and the like. At present, vapor compression refrigeration technology is the most mature and widely applied refrigeration technology, however, a series of problems caused by liquid refrigerant leakage have plagued the development of vapor compression refrigeration technology. At present, no liquid refrigerant can completely meet all requirements in the aspects of safety, ODP, GWP, thermodynamic performance and the like. In view of the bottlenecks encountered in the development of liquid refrigerants, solid refrigeration techniques, such as thermoelectric refrigeration, thermo-acoustic refrigeration, adsorption refrigeration, and thermal effect refrigeration, without the risk of refrigerant leakage, are increasingly attracting attention.
The thermal effect refrigeration technology has higher theoretical efficiency, no application scene limitation and little influence on environment, and is regarded as the most potential solid refrigeration technology. At present, four technologies of electric card refrigeration, magnetic card refrigeration, card flicking refrigeration and card pressing refrigeration are mainly used for the heat effect refrigeration. The first three heat effect refrigeration technologies have quite theoretical and experimental foundations, but have some problems which are not completely solved in development and application. In comparison, although the research on the card pressing refrigeration technology is started later, the technology has wider selection range in terms of materials, and has simple driving mode in terms of a system, thereby avoiding some problems encountered by other three thermal effect refrigeration technologies. Thus, pressure card refrigeration is one of the most potential alternative technologies to vapor compression refrigeration. However, the prior art has little research on the compression heat exchange device of the compression card refrigeration system, and the efficiency is still to be improved.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide a compression heat exchange integrated device of a pressure card refrigerating system with higher efficiency.
In order to achieve the above object, the present invention provides the following technical solutions:
The utility model provides a press card refrigerating system's compression heat transfer integrated device, includes pressure head, a plurality of metal pipeline, press card material, base and outer heat preservation, equidistant evenly distributed of metal pipeline, press card material to pack between the metal pipeline to form the tube-shape body, outer heat preservation parcel is in the tube-shape body skin, the pressure head with be equipped with first runner and second runner in the base respectively, first runner below is equipped with spacing hole with the same quantity of metal pipeline in the pressure head, every spacing hole and the upper end sealing connection of a metal pipeline, the lower extreme and the second runner of metal pipeline communicate with each other.
Further, the card pressing material is prepared from 17% by mass of NPG, 68% by mass of TMP and 15% by mass of graphene.
Further, the filling height of the press-clamping material is 200mm.
Further, the outer heat-insulating layer comprises a metal wall surface and heat-insulating cotton with ground heat conductivity.
Alternatively, the metal pipes are distributed at equal intervals in a triangle, that is, each metal pipe is formed by three metal pipes adjacent at equal intervals. The metal pipes can be distributed at equal intervals in a square shape, namely, each metal pipe is formed by four metal pipes which are adjacent at equal intervals. The metal pipes can also be distributed at regular hexagons at equal intervals, namely, each metal pipe is formed by six metal pipes adjacent at equal intervals.
Further, the metal pipeline is filled with heat exchange fluid.
Further, the filling rate of the pressing card material is 20% -40%.
A compression card refrigerating system comprises the compression heat exchange integrated device.
Compared with the prior art, the invention has the beneficial effects that:
(1) Unlike four parts of traditional vapor compression refrigerating system, the invention integrates the parts of compression and heat exchange, thus saving space greatly and reducing complexity of system;
(2) Through the design of the limiting holes on the first runner, the metal pipeline passes through the limiting holes, so that the tightness of the module is ensured, and the mechanical property of the metal pipeline is also protected;
(3) The clamping material disclosed by the invention has higher heat conductivity and improves the heat exchange efficiency;
(4) The metal pipelines are distributed in a specific mode and the distance between adjacent pipelines, so that the utilization rate of the modules to the space is greatly improved.
Drawings
Fig. 1 is a block diagram of a compression heat exchange integrated device of a compression card refrigeration system provided by an embodiment of the invention;
FIG. 2 is a graph of the rate of fill of a card material versus the rate of cool take;
FIG. 3 is a schematic diagram of a different distribution of metal pipes;
fig. 4 is a graph showing the change of average temperature of the press-clamping material of different distribution modes of the metal pipeline with time.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The embodiment of the invention provides a compression heat exchange integrated device of a compression card refrigeration system, which comprises a pressure head 1, a plurality of metal pipelines 2, a compression card material 3, a base 4 and an outer heat preservation layer 5 as shown in figure 1. The metal pipelines 2 are uniformly distributed at equal intervals, so that heat dissipation is uniform. The press-clamping material is filled between the metal pipes 2 and forms a cylindrical body. The outer heat insulation layer 5 is wrapped on the outer layer of the cylinder body and specifically comprises a metal wall surface and heat insulation cotton with ground heat conductivity, so that the loss of cold/heat is reduced. The pressure head 1 and the base 4 are respectively provided with a first flow channel 6 and a second flow channel 7, limiting holes 8 with the same number as the metal pipelines 2 are arranged below the first flow channel 6 in the pressure head, each limiting hole 8 is in sealing connection with the upper end of one metal pipeline 2, the two limiting holes are highly jointed, the pipeline is prevented from bearing axial pressure, and the tightness is ensured. The lower end of the metal pipeline 2 is communicated with the second flow channel 7, so that the first flow channel 6, the metal pipeline 2 and the second flow channel 7 are communicated, and the metal pipeline 2 is filled with heat exchange fluid for exchanging heat with the press-clamping material 3. The base 4 plays a supporting and binding role on the clamping material 3. The clamping material 3 is in contact with the outer heat insulation layer 5, the pressure head 1, the base 4 and the wall surface of the pipeline only and is in a high sealing state so as to ensure that the pressure applied by the clamping material is hydrostatic pressure.
Wherein, the card pressing material 3 is prepared from 17% of neopentyl glycol (NPG) by mass, 68% of polyhydric alcohol TMP (trimethylolpropane) by mass and 15% of graphene by mass, the phase transition temperature is 10 ℃, the thermal conductivity is 0.75 W.m < -1 >. K < -1 >, and the heat exchange capacity of the device is up to 523.8kW/m < 3 >. For the card pressing material prepared from 20% of NPG, 75% of TMP and 5% of graphene in mass part in the prior art, the heat conductivity of the card pressing material is only 0.4W.m -1·K-1, and compared with the prior art, the card pressing material has higher heat conductivity and higher heat exchange efficiency and capacity.
As shown in FIG. 2, the relationship between the filling rate of the pressing material 3 and the cooling rate per unit volume shows that the cooling rate of the pressing material 3 is higher by 20% -40%, and therefore, the filling rate of the pressing material 3 is preferably 20% -40%.
In a specific implementation, the metal pipes 2 may be arranged in various equidistant manners, as shown in fig. 3, and may be distributed in a triangle with equidistant intervals, that is, each metal pipe 2 is formed by three metal pipes 2 that are adjacent at equal intervals. It is also possible to have a square equidistant distribution, i.e. each metal tube 2 is formed by four equally spaced adjacent metal tubes 2. The metal pipes 2 can also be distributed at equal intervals in a regular hexagon, namely, each metal pipe 2 is formed by six metal pipes 2 which are adjacent at equal intervals, the distance between the adjacent metal pipes is 9.2mm, the radial expansion can be realized, and the effective axial height (the contact part of the pipes and the materials) is 200mm. The variation of the average temperature of the press-clamping materials in different distribution modes with time is shown in fig. 4.
The working principle of the invention is as follows:
1) The compression process comprises the steps that a pressure head 1 runs downwards to transmit pressure to a clamp material 3, the clamp material 3 is restrained by the pressure of the pressure head 1 and an outer heat insulation layer 5 and a base 4 to shrink in volume, the temperature of the clamp material 3 rises under the drive of the clamp effect, a metal pipeline 2 positioned in the clamp material 3 passes through a limit hole 8 in the pressure head 1 to form a seal on the clamp material 3, and the clamp material is not subjected to axial pressure;
2) The cooling process comprises that cooling fluid flows into the metal pipeline 2 through a first flow passage 6 in the pressure head 1 under the drive of external force, reduces the temperature of the clamping material 3, flows out from a second flow passage 7 in the base 4, and exchanges heat with the outside;
3) The pressure reducing process comprises that the pressure head 1 moves upwards to reduce the pressure transmitted to the clamping material 3, the clamping material expands in volume under the constraint of the pressure head 1, the outer heat-preserving layer 5 and the base 4, and the temperature is further reduced under the drive of the clamping effect;
4) The refrigeration process comprises the steps that cold fluid flows into the metal pipeline 2 through the first flow channel 6 in the pressure head 1 under the drive of external force, then exchanges heat with the pressure card material 3, takes away cold energy of the pressure card material, then flows out from the second flow channel 7 in the base 4, exchanges heat with the outside, and reduces the temperature for the outside.
The embodiment of the invention also provides a card pressing refrigeration system, which comprises the compression heat exchange integrated device and other necessary modules, so that card pressing refrigeration is realized, and the other necessary modules are in the prior art and are not described in detail.
It should be understood that the foregoing embodiments and description are merely illustrative of the principles, features, and advantages of this invention, and that various changes and modifications can be made in the invention without departing from the spirit and scope of the invention, which is defined in the claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411047750.4A CN119085163A (en) | 2024-08-01 | 2024-08-01 | A compression and heat exchange integrated device for a compression card refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411047750.4A CN119085163A (en) | 2024-08-01 | 2024-08-01 | A compression and heat exchange integrated device for a compression card refrigeration system |
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| Publication Number | Publication Date |
|---|---|
| CN119085163A true CN119085163A (en) | 2024-12-06 |
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| CN202411047750.4A Pending CN119085163A (en) | 2024-08-01 | 2024-08-01 | A compression and heat exchange integrated device for a compression card refrigeration system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160084544A1 (en) * | 2012-03-27 | 2016-03-24 | University Of Maryland, College Park | Solid-state heating or cooling systems, devices, and methods |
| DE102015121657A1 (en) * | 2015-12-11 | 2017-06-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and device for operating cycle-based systems |
| CN114963598A (en) * | 2022-04-27 | 2022-08-30 | 东南大学 | Pressing and clamping refrigeration system based on expansion work recovery |
| CN115978829A (en) * | 2021-10-15 | 2023-04-18 | 中国科学院金属研究所 | A refrigeration element, refrigeration system and testing system capable of filling press card material |
| WO2023169951A1 (en) * | 2022-03-07 | 2023-09-14 | Centre National De La Recherche Scientifique | Regenerator of temperature, heat pump including such a regenerator and method of implementing thereof |
| CN116928901A (en) * | 2023-06-07 | 2023-10-24 | 南京理工大学 | Refrigerating system based on composite card pressing material |
| CN220083360U (en) * | 2023-06-07 | 2023-11-24 | 广东工业大学 | A composite refrigeration system |
-
2024
- 2024-08-01 CN CN202411047750.4A patent/CN119085163A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160084544A1 (en) * | 2012-03-27 | 2016-03-24 | University Of Maryland, College Park | Solid-state heating or cooling systems, devices, and methods |
| DE102015121657A1 (en) * | 2015-12-11 | 2017-06-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and device for operating cycle-based systems |
| CN115978829A (en) * | 2021-10-15 | 2023-04-18 | 中国科学院金属研究所 | A refrigeration element, refrigeration system and testing system capable of filling press card material |
| WO2023169951A1 (en) * | 2022-03-07 | 2023-09-14 | Centre National De La Recherche Scientifique | Regenerator of temperature, heat pump including such a regenerator and method of implementing thereof |
| CN114963598A (en) * | 2022-04-27 | 2022-08-30 | 东南大学 | Pressing and clamping refrigeration system based on expansion work recovery |
| CN116928901A (en) * | 2023-06-07 | 2023-10-24 | 南京理工大学 | Refrigerating system based on composite card pressing material |
| CN220083360U (en) * | 2023-06-07 | 2023-11-24 | 广东工业大学 | A composite refrigeration system |
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