CN201225796Y - Active regenerator for ethyl hydrate water solution porous evaporated room temperature magnetic refrigerating device - Google Patents
Active regenerator for ethyl hydrate water solution porous evaporated room temperature magnetic refrigerating device Download PDFInfo
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- CN201225796Y CN201225796Y CNU2008200486683U CN200820048668U CN201225796Y CN 201225796 Y CN201225796 Y CN 201225796Y CN U2008200486683 U CNU2008200486683 U CN U2008200486683U CN 200820048668 U CN200820048668 U CN 200820048668U CN 201225796 Y CN201225796 Y CN 201225796Y
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The utility model provides an active regenerator of a room-temperature magnetic refrigerator for the porous evaporation of an aqueous solution of ethanol, which comprises a working substance bed in a high-temperature region of the regenerator, a shunt valve, a blower, a heat exchanger at a high-temperature end, a gas-liquid separator, a liquid pump, a low-temperature region of the regenerator and a heat exchanger at a low-temperature end, wherein the working substance bed in the high-temperature region of the regenerator, which is arranged in a Ni-Fe-B magnetic field, is connected with the blower; one end of the shunt valve is connected with the blower and the working substance bed, and the other end is connected with the gas-liquid separator; the heat exchanger at a high-temperature end is respectively connected with the blower and the gas-liquid separator which is connected with the liquid pump, and the low-temperature region of the regenerator is connected with the liquid pump and is connected with the working substance bed in the high-temperature region of the regenerator through the heat exchanger at a low-temperature end. According to the characteristic that phase-changing boiling heat exchange can absorb more heat, the utility model applies the phase-changing boiling heat exchange to the magnetic working substance bed so as to achieve the aim of enhancing heat transfer.
Description
Technical field
The utility model relates to the active regenerator of room-temperature magnetic refrigerator, particularly relates to the active regenerator of room-temperature magnetic refrigerator of ethanol water porous evaporation.
Background technology
C.Zimm from U.S. aerospace flight technology center in 1996 has adopted active magnetic regenerator (AMR, symmetrical active magnetic regenerator again) technology, set up a room-temperature magnetic refrigerator, up to the present, the development of room-temperature magnetic refrigerator also is in the stage of research and development experimental prototype, with working medium bed AMR is the core component of room temperature magnetic refrigerating device, and how it being carried out augmentation of heat transfer will be an important content that improves refrigerating efficiency.At present, no matter the heat transfer of the working medium bed of magnetic of AMR is the Powdered working medium or the working medium of stratiform, usually employing directly allows heat exchanging fluid (as helium, water etc.) flow through, and fluid-pressure drop is bigger, and flow velocity can reduce suddenly, the heat transfer rate is slow, is unfavorable for improving the running frequency of device.In addition, refrigeration after the demagnetization depends on whether can in time and take out the heat of working medium bed of magnetic generation when magnetizing fully to a great extent, therefore, and to the working medium bed enhanced heat exchange that carries out of AMR, especially the enhanced heat exchange of excitation process is the important content that improves refrigerating efficiency.
Because latent heat of phase change is under uniform temp, liquid becomes (phase transformation) absorbs in the gasification the heat situation when single-phase.China's utility model patent " microchannel single-phase convection and based on capillary slot phase-change heat-exchange combination cooling device " (20062013390.8) discloses high boiling liquid working medium has been flow through the heater surface, enter into the inner many microchannels that are provided with of a Heat Conduction Material after absorbing heat, the Heat Conduction Material outer surface is provided with many based on capillary slot that can produce capillary force, and capillary force is drawn into another kind of liquid working substance in the based on capillary slot.High boiling liquid working medium in the microchannel by the heat exchange of high-intensity minute yardstick single-phase convection with the heat transferred Heat Conduction Material, another kind of low-boiling point liquid working medium on the Heat Conduction Material heating outer surface in the based on capillary slot, produce high-intensity evaporation and boiling after this liquid working substance is heated, take away the heat of heater.Heat Conduction Material inside is provided with the microchannel, and its outer surface is provided with the heat exchange structure of based on capillary slot.But this technology can not be applied directly on the active regenerator of room temperature magnetic refrigerating, also relates to problems such as gas, liquid working medium flow in the active regenerator outer circulation passage of control.
The utility model content
The purpose of this utility model is to overcome the shortcoming of the existing working medium bed heat transfer technology of AMR, provides a kind of active regenerator of room-temperature magnetic refrigerator of ethanol water porous evaporation, to the working medium bed enhanced heat exchange that carries out of AMR.
The purpose of this utility model realizes by following proposal:
The active regenerator of magnetic refrigerator of ethanol water porous microchannel evaporation comprises that the regenerator high-temperature region is working medium bed, flow divider, blower fan, temperature end heat exchanger, gas-liquid separator, liquid pump, regenerator low-temperature space and low-temperature end heat exchanger; Be located at that regenerator high-temperature region in the NiFeB magnetic field is working medium bed to be connected with blower fan, flow divider one end is connected with the regenerator high-temperature region is working medium bed with blower fan respectively, the other end is connected with gas-liquid separator, blower fan is connected with the temperature end heat exchanger, the temperature end heat exchanger is connected with gas-liquid separator, gas-liquid separator then is connected with the liquid pump, and the liquid pump is connected with the regenerator low-temperature space, and the regenerator low-temperature space is connected with the regenerator high-temperature region is working medium bed by the low-temperature end heat exchanger.
The utility model compared with prior art has following advantage and beneficial effect:
(1) novelty of the utility model phase-change heat-exchange technology on room temperature magnetic refrigerating active regenerator used, and adopts working medium bed the comparing of fluid heat exchange that higher heat transfer efficiency and heat transfer rate are arranged with tradition.
(2) the utility model has solved microchannel phase-change heat-exchange outer circulation heat-exchange system gas-liquid aliasing, and heat exchange efficiency hangs down problem.Can improve the room-temperature magnetic refrigerator temperature and stride, reduce installation cost.
Description of drawings
Fig. 1 is the active regenerator structural representation of magnetic refrigerator of the utility model ethanol water porous microchannel evaporation.
The specific embodiment
Below in conjunction with drawings and embodiments the utility model is further described, but need to prove that the claimed scope of the utility model is not limited to the scope of embodiment statement.
As shown in Figure 1, the active regenerator of room-temperature magnetic refrigerator of ethanol water porous microchannel evaporation comprise that the regenerator high-temperature region is working medium bed 1, flow divider 2, blower fan 3, temperature end heat exchanger 4, gas-liquid separator 5, liquid pump 6, regenerator low-temperature space 7 and low-temperature end heat exchanger 8.The regenerator high-temperature region working medium bed 1 that is located in the NiFeB magnetic field is connected with blower fan 3, flow divider 2 one ends are connected with working medium bed 1 with blower fan 3 respectively, the other end is connected with gas-liquid separator 5, blower fan 3 is connected with temperature end heat exchanger 4, temperature end heat exchanger 4 is connected with gas-liquid separator 5, gas-liquid separator 5 then is connected with liquid pump 6, and liquid pump 6 is connected with regenerator low-temperature space 7, and regenerator low-temperature space 7 is connected with regenerator high-temperature region working medium bed 1 by low-temperature end heat exchanger 8.
It is double pipe heat exchanger that temperature end heat exchanger 4 is selected the temperature end heat exchanger for use.Low-temperature end heat exchanger 8 is selected parallel-flow heat exchanger for use.Gas-liquid separator 5 is selected QF type gas-liquid separator for use.The utility model room-temperature magnetic refrigerator can be a rotary type magnetic refrigerating device, also can be shuttle type magnetic refrigerator.
Regenerator high-temperature region working medium bed 1 is meant that room temperature magnetic refrigerating AMR is in the part in the magnetic field in working medium bed, because the characteristic of magnetic working medium, working medium can be emitted heat when entering magnetic field, and temperature raises, so this zone is called the high-temperature region.Equally, because magnetic working medium can absorb extraneous heat when withdrawing from magnetic field, so the zone that will be in beyond the magnetic field is called low-temperature space.Magnetic working medium in working medium bed is the Powdered of even particle size, and magnetic working medium is solid, is filled in the working medium bed inside of AMR.The material of boiling heat transfer is the aqueous solution of ethanol, and the ethanol molecule degree is 89.4%, and boiling point is 78.15 ℃.
During application, ethanol water flows in the regenerator high-temperature region working medium bed 1, after regenerator high-temperature region working medium bed 1 enters magnetic field, magnetic working medium (rare earth metal such as Gd and compound thereof, alloy, having is magnetized emits the characteristic that can absorb heat after heat, the demagnetization, be a kind of room temperature magnetic refrigerating material) heat release (when magnetic working medium is magnetized owing to be magnetized, causing inner atomic magnetic moment to be arranged reaches unanimity, be orderly state, this process can be emitted heat), working medium bed interior magnetic working medium is the Powdered of even particle size.Working medium bed 1 temperature in regenerator high-temperature region raises, because the vapourizing temperature of ethanol is lower, when the temperature of regenerator high-temperature region working medium bed 1 reached the vapourizing temperature of ethanol, the ethanol heat absorption became alcohol vapour, takes away the magnetization heat of magnetic working medium.Alcohol vapour flows out working medium bedly 1 then, and alcohol gas is transported to 4 heat exchange of temperature end heat exchanger by blower fan 3, and the alcohol gas temperature reduces after the heat exchange, and most of liquefy enters gas-liquid separator 5; And still carry part alcohol vapour and ethanol not fully the ethanol water of evaporation also enter into gas-liquid separator 5 through flow divider 2.In gas-liquid separator 5, ethanolic solution and residue alcohol gas are separated, and alcohol gas is sent into temperature end heat exchanger 4 by blower fan 3 again through flow divider 2 and participated in heat exchange; And ethanolic solution is delivered into regenerator low-temperature space 7 through liquid pump 6.In the regenerator low-temperature end, because demagnetizing effect is (when magnetic working medium withdraws from magnetic field, atomic magnetic moment becomes unordered state by orderly state, and this process can absorb extraneous heat), magnetic working medium absorbs the heat of ethanolic solution, after the ethanolic solution temperature reduces, enter low-temperature end heat exchanger 8, absorb external heat, after temperature raises, return temperature end heat exchanger 1, enter next circulation.
Claims (5)
1, the active regenerator of the room-temperature magnetic refrigerator of ethanol water porous evaporation is characterized in that: this regenerator comprises that the regenerator high-temperature region is working medium bed, flow divider, blower fan, temperature end heat exchanger, gas-liquid separator, liquid pump, regenerator low-temperature space and low-temperature end heat exchanger; Be located at that regenerator high-temperature region in the NiFeB magnetic field is working medium bed to be connected with blower fan, flow divider one end is connected with the regenerator high-temperature region is working medium bed with blower fan respectively, the other end is connected with gas-liquid separator, blower fan is connected with the temperature end heat exchanger, the temperature end heat exchanger is connected with gas-liquid separator, gas-liquid separator is connected with the liquid pump, and the liquid pump is connected with the regenerator low-temperature space, and the regenerator low-temperature space is connected with the regenerator high-temperature region is working medium bed by the low-temperature end heat exchanger.
2, the active regenerator of the room-temperature magnetic refrigerator of ethanol water porous evaporation according to claim 1 is characterized in that: described regenerator high-temperature region is working medium bed to be in working medium bed in the magnetic field for room temperature magnetic refrigerating AMR.
3, the active regenerator of the room-temperature magnetic refrigerator of ethanol water porous evaporation according to claim 1 is characterized in that: described temperature end heat exchanger is a double pipe heat exchanger.
4, the active regenerator of the room-temperature magnetic refrigerator of ethanol water porous evaporation according to claim 1 is characterized in that: described low-temperature end heat exchanger is a parallel-flow heat exchanger.
5, the active regenerator of the room-temperature magnetic refrigerator of ethanol water porous evaporation according to claim 1 is characterized in that: described gas-liquid separator is a QF type gas-liquid separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200486683U CN201225796Y (en) | 2008-06-03 | 2008-06-03 | Active regenerator for ethyl hydrate water solution porous evaporated room temperature magnetic refrigerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200486683U CN201225796Y (en) | 2008-06-03 | 2008-06-03 | Active regenerator for ethyl hydrate water solution porous evaporated room temperature magnetic refrigerating device |
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| Publication Number | Publication Date |
|---|---|
| CN201225796Y true CN201225796Y (en) | 2009-04-22 |
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| CNU2008200486683U Expired - Fee Related CN201225796Y (en) | 2008-06-03 | 2008-06-03 | Active regenerator for ethyl hydrate water solution porous evaporated room temperature magnetic refrigerating device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931688A (en) * | 2017-03-14 | 2017-07-07 | 华南理工大学 | A kind of infinitesimal heat regenerative system in parallel for room temperature magnetic refrigerating |
| CN106931687A (en) * | 2017-03-14 | 2017-07-07 | 华南理工大学 | A kind of series connection infinitesimal heat regenerative system for room temperature magnetic refrigerating |
| CN108413675A (en) * | 2018-02-25 | 2018-08-17 | 中科磁凌（北京）科技有限公司 | Modularization refrigerator based on magnetic refrigeration |
| CN111551069A (en) * | 2020-05-20 | 2020-08-18 | 山东大学 | Method, system and application for improving boiling heat exchange efficiency |
| CN114909817A (en) * | 2022-04-13 | 2022-08-16 | 西安交通大学 | Regenerative thermomagnetic-magnetocaloric coupling refrigeration system and method |
| CN116379705A (en) * | 2023-03-28 | 2023-07-04 | 北京理工大学 | Magnetic refrigeration hydrogen liquefying device |
-
2008
- 2008-06-03 CN CNU2008200486683U patent/CN201225796Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931688A (en) * | 2017-03-14 | 2017-07-07 | 华南理工大学 | A kind of infinitesimal heat regenerative system in parallel for room temperature magnetic refrigerating |
| CN106931687A (en) * | 2017-03-14 | 2017-07-07 | 华南理工大学 | A kind of series connection infinitesimal heat regenerative system for room temperature magnetic refrigerating |
| CN108413675A (en) * | 2018-02-25 | 2018-08-17 | 中科磁凌（北京）科技有限公司 | Modularization refrigerator based on magnetic refrigeration |
| CN108413675B (en) * | 2018-02-25 | 2021-01-05 | 中科磁凌（北京）科技有限公司 | Modularization refrigerator based on magnetic refrigeration |
| CN111551069A (en) * | 2020-05-20 | 2020-08-18 | 山东大学 | Method, system and application for improving boiling heat exchange efficiency |
| CN114909817A (en) * | 2022-04-13 | 2022-08-16 | 西安交通大学 | Regenerative thermomagnetic-magnetocaloric coupling refrigeration system and method |
| CN116379705A (en) * | 2023-03-28 | 2023-07-04 | 北京理工大学 | Magnetic refrigeration hydrogen liquefying device |
| CN116379705B (en) * | 2023-03-28 | 2024-06-11 | 北京理工大学 | Magnetic refrigeration hydrogen liquefying device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090422 Termination date: 20120603 |