CN117722791A - Uninterrupted refrigerating system and refrigerating method based on positive and negative electric card effect - Google Patents
Uninterrupted refrigerating system and refrigerating method based on positive and negative electric card effect Download PDFInfo
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- CN117722791A CN117722791A CN202311563220.0A CN202311563220A CN117722791A CN 117722791 A CN117722791 A CN 117722791A CN 202311563220 A CN202311563220 A CN 202311563220A CN 117722791 A CN117722791 A CN 117722791A
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- 230000000694 effects Effects 0.000 title claims abstract description 168
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005057 refrigeration Methods 0.000 claims abstract description 63
- 238000012546 transfer Methods 0.000 claims abstract description 34
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 23
- 230000005684 electric field Effects 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 230000005611 electricity Effects 0.000 claims description 107
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910020684 PbZr Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000011160 research Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000013529 heat transfer fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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]
Abstract
An uninterrupted refrigeration system and a refrigeration method based on positive and negative electric card effects, wherein the system comprises: positive card effect module, negative card effect module, hot side heat exchanger, cold side heat exchanger, pipeline switch, fluid pump. The refrigeration method is to apply an electric field to two electric card effect modules simultaneously and make the positive and negative electric card effect modules, the hot-end heat exchanger and the cold-end heat exchanger form a closed series loop through the alternate switching of the pipeline switch, so that the heat transfer working medium is ensured to dissipate heat in the hot-end heat exchanger and absorb heat in the cold-end heat exchanger uninterruptedly, the continuous uninterrupted work of the cold-end and the hot-end is realized, the continuous uninterrupted heat absorption refrigeration of the system is further realized, the heat accumulation of the cold-end of the system is avoided, and the refrigeration efficiency and the power are effectively improved. The electric card effect module adopts a coaxial sleeve design, can realize better heat exchange between fluid and electric card materials, remarkably improves the working efficiency of a refrigeration system based on the electric card effect, and lays a foundation for the research of a high-power electric card cooling system.
Description
Technical Field
The invention belongs to the field of solid-state refrigeration systems, and particularly relates to an uninterrupted refrigeration system and a refrigeration method based on positive and negative electric card effects.
Background
With the development of society, refrigeration technology plays an important role in production and life. From widely used air conditioners and refrigerators to heat dissipation and temperature control of electronic components, the body and shadow of refrigeration technology are not separated. However, conventional compression vapor refrigeration technology is accompanied by a number of problems while serving both production and life. If the refrigerating equipment is large in size, huge noise is accompanied during operation, the efficiency is lower, and the used refrigerant is strong greenhouse gas, so that the ecological environment is greatly influenced. There is a need to develop novel environment-friendly and efficient refrigeration technology. The electric card refrigeration technology based on the electric card effect has the advantages of high efficiency, environmental protection and the like, and is a novel technology with great application potential.
The electric card effect refers to the phenomenon that the dipole entropy of a dielectric material changes in the process of changing an external electric field, so that the temperature changes. The positive and negative temperature changes can be classified into positive and negative effects according to the electric field applied. When positive electricity card effect, the temperature of the material applying electric field is increased, and when negative electricity card effect, the temperature of the material applying electric field is reduced. By combining the positive and negative electric card effects, the refrigerating effect of the electric card refrigerating device can be improved.
At present, in the working process, the existing solid-solid electric card refrigerating device or the existing solid-fluid coupling electric card refrigerating device usually only depends on a single electric card effect process, and in order to realize heat exchange with the outside in the single electric card effect process, an electric card material or a heat transfer fluid needs to stay for a period of time at a cold end or a hot end to wait for the heat exchange to reach the ambient temperature before the next refrigerating cycle can be performed. In the process, the cold end or the hot end is kept in a non-working state for a long time, so that the working efficiency of the electric card refrigerating device or system is greatly reduced, and the power improvement of the electric card refrigerating system is restricted.
Disclosure of Invention
The invention provides an uninterrupted refrigeration system and a refrigeration method based on positive and negative electric card effects, which are used for solving the problem that an electric card refrigeration device in the prior art cannot continuously refrigerate, and greatly improving the refrigeration performance of the refrigeration system.
In order to achieve the above purpose, the present invention adopts the following technical scheme.
The invention relates to an uninterrupted refrigeration system based on positive and negative electric card effect, comprising: a positive card effect module, a negative card effect module, a hot side heat exchanger, a cold side heat exchanger, and a fluid pump;
the input end of the hot-end heat exchanger is respectively connected with the output end of the hot end of the positive electricity card effect module and the output end of the hot end of the negative electricity card effect module through a pipeline provided with a pipeline switch; the output end of the hot-end heat exchanger is respectively connected with the input end of the hot end of the positive electricity card effect module and the input end of the hot end of the negative electricity card effect module through a pipeline provided with a pipeline switch;
the input end of the cold end heat exchanger is respectively connected with the output end of the cold end of the positive electricity card effect module and the output end of the cold end of the negative electricity card effect module through a pipeline provided with a pipeline switch; the output end of the cold end heat exchanger is respectively connected with the input end of the cold end of the positive electricity card effect module and the input end of the cold end of the negative electricity card effect module through a pipeline provided with a pipeline switch;
the fluid pump is arranged at the output end or the input end of the cold-end heat exchanger or the input end or the output end of the hot-end heat exchanger;
the pipeline switch controls the opening or closing of the corresponding pipeline, so that the positive electricity card effect module, the negative electricity card effect module, the hot end heat exchanger and the cold end heat exchanger form an enclosed space, a heat transfer medium flows in the enclosed space, and heat exchange is carried out in the hot end heat exchanger or the cold end heat exchanger.
In the invention, the positive electricity card effect module and the negative electricity card effect module are formed by nesting a plurality of concentric circular tubes, each circular tube is formed by two concentric circular tube-shaped electrodes and an electric card material clamped between the electrodes, and liquid heat transfer medium is filled between the adjacent circular tubes.
In the invention, the positive electricity card material is selected from P (VDF-TrFE-CFE) and KNbO 3 、Pb(Sc 0.5 Ta 0.5 )O 3 、BaZr 0.2 TiO 3 Wherein the mole percent of each component in P (VDF-TrFE-CFE) is 59.23/3.6/7.2%; the negative electricity card material is selected from Bi 5 Ti 5 AlO 15 、PbZr 0.5 O 3 、Hf 0.5 Zr 0.5 O 2 、Bi 0.5 (K 0.15 Na 0.85 ) 0.5 TiO 3 One of them.
In the invention, the heat transfer medium is selected from one of deionized water and silicone oil.
In the invention, the pipeline switch is an electromagnetic valve.
The invention discloses a continuous refrigeration method, which comprises the following steps:
the first step: electrifying the positive electricity card effect module and the negative electricity card effect module, wherein the temperature of the positive electricity card effect module is increased, and the temperature of the negative electricity card effect module is reduced;
and a second step of: closing the input end of the hot end of the positive electricity card effect module, the input end of the cold end of the positive electricity card effect module, the output end of the hot end of the negative electricity card effect module and the output end of the cold end of the negative electricity card effect module by using the pipeline switch;
and a third step of: starting a fluid pump, driving a warmed heat transfer medium in the positive charge card effect module to enter the hot end heat exchanger to release heat, then entering the negative charge card effect module to further cool after the heat is restored to the ambient temperature, then entering the cold end heat exchanger to perform heat exchange, realizing refrigeration cooling of the ambient environment of the cold end heat exchanger, and returning the heat transfer medium to the positive charge card effect module after the temperature of the heat transfer medium is raised to the ambient temperature;
fourth step: at this time, the electric fields of the positive electricity card effect module and the negative electricity card effect module are removed, the temperature of the positive electricity card effect module is reduced, and the temperature of the negative electricity card effect module is increased; simultaneously, the output end of the hot end of the positive electricity card effect module, the output end of the cold end of the positive electricity card effect module, the input end of the hot end of the negative electricity card effect module and the input end of the cold end of the negative electricity card effect module are closed by the pipeline switch;
fifth step: under the drive of a fluid pump, the warmed heat transfer medium in the negative electricity card effect module enters the hot end heat exchanger to release heat, and then enters the positive electricity card effect module to be further cooled after being restored to the ambient temperature, and then enters the cold end heat exchanger to be subjected to heat exchange, so that the refrigeration cooling of the ambient environment of the cold end heat exchanger is realized, and the heat transfer medium returns to the negative electricity card effect module after being warmed; completing one refrigeration cycle; returning to the first step, and performing circulation refrigeration. In the process, the fluid always keeps a flowing state, and the waiting heat exchange process is not stopped.
Advantageous effects
The invention provides an uninterrupted refrigerating system and a refrigerating method based on a positive and negative electric card effect, wherein a closed series loop is formed by a positive and negative electric card effect module, a hot end heat exchanger and a cold end heat exchanger through the switching of a switch by utilizing the positive and negative electric card effect; the electric field is alternately applied to the two electric card effect modules and the switching of the pipeline switch is cooperated, so that the temperature of the heat transfer working medium is regulated and controlled, the heat of the heat transfer working medium is enabled to be uninterruptedly radiated in the hot end heat exchanger and absorbed in the cold end heat exchanger, the continuous work of the cold end and the hot end is realized, the continuous uninterrupted heat absorption refrigeration of the system is further realized, the heat accumulation of the cold end of the system is avoided, and the refrigeration efficiency is effectively improved. Compared with the traditional vapor compression refrigeration device, the refrigeration system has the advantages of small volume, low noise, environmental friendliness and the like. The defect that equipment is damaged due to cold end environmental heat source accumulation caused by cold end non-working heat absorption when a high-temperature heat transfer working medium dissipates heat at a hot end in the working process of the traditional electric card refrigerating system is overcome. In order to realize continuous uninterrupted refrigeration in the whole working period, the invention utilizes the serial connection work of two electric card modules, simultaneously applies and removes electric fields to the positive and negative electric card effect modules, and realizes the circulation of fluid in different circuits by utilizing the switching of a switch. The system can realize uninterrupted heat absorption of the fluid at the cold end and avoid accumulation of heat at the cold end. Meanwhile, the electric card effect module adopts the design of a coaxial sleeve, fluid passes back and forth through a gap between electric card materials, and better heat exchange between the fluid and the electric card materials can be realized. By fine tuning the operating parameters, the design can continue to provide higher cooling power where needed. The invention combines the advantages of the prior work in the field and lays a foundation for the research of the high-power electric card cooling system in the future. The invention realizes uninterrupted refrigeration by utilizing the positive and negative electric card effects, and effectively improves the refrigeration power of the system.
Drawings
FIG. 1 is a schematic diagram of an uninterrupted refrigeration system based on the positive and negative card effect according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of a circular tubular electrical card in embodiment 1 of the present invention;
FIG. 3 is a schematic cross-sectional structure of the electrocaloric effect module of example 1 of this invention;
FIG. 4 is a schematic diagram showing the circulation of the heat transfer medium in the power-on state of the electric card effect module in embodiment 1 of the present invention;
FIG. 5 is a schematic diagram showing the circulation of the heat transfer medium after the power supply of the electric card effect module in embodiment 1 of the present invention is turned off;
FIG. 6 is a graph of instantaneous refrigeration power versus an uninterruptible refrigeration system of the present invention using finite element modeling;
fig. 7 is a graph of total refrigeration capacity versus an uninterruptible refrigeration system of the present invention using finite element modeling.
Wherein: 1-pipeline switch, 2-fluid pump, 3-hot end heat exchanger, 4-cold end heat exchanger, 5-positive electricity card effect module, 6-negative electricity card effect module.
Detailed Description
Example 1
Referring to fig. 1 to 5, the present invention provides an uninterrupted refrigeration system based on a positive and negative electric card effect, comprising: the device comprises a pipeline switch 1, a fluid pump 2, a hot-end heat exchanger 3, a cold-end heat exchanger 4, a positive electricity card effect module 5 and a negative electricity card effect module 6;
the input end 3-1 of the hot end heat exchanger 3 is respectively connected with the output end 5-1-1 of the hot end 5-1 of the positive electricity card effect module 5 and the output end 6-1-2 of the hot end 6-1 of the negative electricity card effect module 6 through a pipeline provided with a pipeline switch 1; the output end 3-2 of the hot end heat exchanger 3 is respectively connected with the input end 5-1-2 of the hot end 5-1 of the positive electricity card effect module 5 and the input end 6-1-1 of the hot end 6-1 of the negative electricity card effect module 6 through a pipeline provided with a pipeline switch 1;
the input end 4-2 of the cold end heat exchanger 4 is respectively connected with the output end 5-2-2 of the cold end 5-2 of the positive electricity card effect module 5 and the output end 6-2-1 of the cold end 6-2 of the negative electricity card effect module 6 through a pipeline provided with a pipeline switch 1; the output end 4-1 of the cold end heat exchanger 4 is respectively connected with the input end 5-2-1 of the cold end 5-2 of the positive electricity card effect module 5 and the input end 6-2-2 of the cold end 6-2 of the negative electricity card effect module 6 through a pipeline provided with a pipeline switch 1;
the fluid pump 2 is arranged at the input end 3-1 of the hot end heat exchanger 3;
the opening or closing of the corresponding pipeline is controlled through the pipeline switch 1, so that a closed space is formed by the positive card effect module 5, the negative card effect module 6, the hot end heat exchanger 3 and the cold end heat exchanger 4, a heat transfer medium flows in the closed space, and heat exchange is carried out in the hot end heat exchanger 3 or the cold end heat exchanger 4;
referring to fig. 3, the positive electricity card effect module 5 and the negative electricity card effect module 6 are formed by nesting a plurality of concentric circular tube-shaped electric cards, each circular tube-shaped electric card is formed by clamping electric card materials 5-0-2 or (6-0-2) between two concentric circular tube-shaped electrodes 5-0-1 or (6-0-1), and heat transfer media 5-0-3 or (6-0-3) are filled between adjacent circular tube-shaped electric cards;
the electric card material in the positive electric card effect module 5 is P (VDF-TrFE-CFE), and the electric card material in the negative electric card effect module 6 is Bi 5 Ti 5 AlO 15 ；
The heat transfer medium 5-0-3 or (6-0-3) is selected from deionized water;
the pipeline switch 1 is an electromagnetic valve.
Example 2
The difference between this embodiment and embodiment 1 is that: the output end 3-2 of the hot end heat exchanger 3 is provided with the fluid pump 2; the electric card material in the positive card effect module 5 is KNbO 3 The electric card material in the negative electric card effect module 6 is PbZr 0.5 O 3 The method comprises the steps of carrying out a first treatment on the surface of the The heat transfer medium is selected from silicone oils.
Example 3
Heat exchange at the cold endThe input 4-2 of the exchanger 4 is provided with said fluid pump 2; the electrocaloric material in the positive card effect module 5 is Pb (Sc) 0.5 Ta 0.5 )O 3 The electrical card material in the negative electricity card effect module 6 is Hf 0.5 Zr 0.5 O 2 The method comprises the steps of carrying out a first treatment on the surface of the The heat transfer medium is selected from silicone oils.
Example 4
The fluid pump 2 is arranged at the output end 4-1 of the cold end heat exchanger 4; the electric card material in the positive card effect module 5 is BaZr 0.2 TiO 3 The electric card material in the negative electricity card effect module 6 is Bi 0.5 (K 0.15 Na 0.85 ) 0.5 TiO 3 。
Example 5
A continuous refrigeration method implemented by adopting the uninterrupted refrigeration system based on positive and negative electric card effect of any one of embodiments 1-4, comprising the following steps:
the first step: electrifying the positive electricity card effect module 5 and the negative electricity card effect module 6, wherein the temperature of the positive electricity card effect module 5 is increased, and the temperature of the negative electricity card effect module 6 is reduced;
and a second step of: the pipeline switch 1 is utilized to close the input end 5-1-2 of the hot end 5-1 of the positive electricity card effect module 5 and the output end 5-2-2 of the cold end 5-2 of the positive electricity card effect module 5, and the output end 6-1-2 of the hot end 6-1 of the negative electricity card effect module 6 and the input end 6-2-2 of the cold end 6-2 of the negative electricity card effect module 6;
and a third step of: starting a fluid pump 2, driving the warmed heat transfer medium in the positive card effect module 5 to enter the hot end heat exchanger 3 to release heat, entering the negative card effect module 6 to further cool after the heat is restored to the ambient temperature, then entering the cold end heat exchanger 4 to perform heat exchange, realizing refrigeration cooling of the ambient environment of the cold end heat exchanger 4, and returning the heat transfer medium to the positive card effect module 5 after the temperature of the heat transfer medium is raised;
fourth step: at this time, the electric fields of the positive electricity card effect module 5 and the negative electricity card effect module 6 are removed, the temperature of the positive electricity card effect module 5 is reduced, and the temperature of the negative electricity card effect module 6 is increased; meanwhile, the pipeline switch 1 is utilized to close the output end 5-1-1 of the hot end 5-1 of the positive electricity card effect module 5 and the input end 5-2-1 of the cold end 5-2 of the positive electricity card effect module 5, the input end 6-1-1 of the hot end 6-1 of the negative electricity card effect module 6 and the output end 6-2-1 of the cold end 6-2 of the negative electricity card effect module 6;
fifth step: under the drive of the fluid pump 2, the warmed heat transfer medium 5-0-3 (6-0-3) in the negative electricity card effect module 6 enters the hot end heat exchanger 3 to release heat, and enters the positive electricity card effect module 5 to be further cooled after the temperature is restored to the ambient temperature, and then enters the cold end heat exchanger 4 to be subjected to heat exchange, so that the refrigeration and the cooling of the surrounding environment of the cold end heat exchanger 4 are realized, and the heat transfer medium returns to the negative electricity card effect module 6 after the temperature of the heat transfer medium is raised; completing one refrigeration cycle; returning to the first step, the cyclic refrigeration is repeatedly performed.
Example 6
In order to show the continuous heat dissipation characteristic of devices based on the positive and negative electric card effects, the inventor simulates the working process of the uninterrupted refrigeration system based on the positive and negative electric card effects in the embodiment 1 of the invention through a finite element method. In order to simplify the calculation, the structures of the positive and negative electric card effect modules are set to be completely consistent, and the application substitution of the positive and negative electric card effect is realized by alternately applying and removing electric fields to the positive and negative electric card effect modules.
In the device based on the positive and negative electric card effect, the positive and negative electric card effect module consists of three coaxial sleeves with the thickness of 1mm and the length of 33mm and heat transfer medium deionized water in the gaps between the sleeves, wherein the gaps between the sleeves are 1mm. The positive electricity card material is selected as P (VDF-TrFE-CFE), and the contents of the components are as follows: 59.2/33.6/7.2mol%, and the negative electricity card material is Bi 5 Ti 5 AlO 15 The electric field applied by the positive electricity card module is 150MV/m, the electric field applied by the negative electricity card module is 162MV/m, the running period time is 10s, and the maximum flow rate of fluid output by the fluid pump is 0.6m/s in the working process of the refrigeration device. Referring to fig. 6, a diagram is provided for comparing instantaneous refrigeration power of a refrigeration device based on a combination of positive and negative electric card effects with that of a traditional refrigeration device based on a positive electric card effect. As can be seen from fig. 6: the instantaneous refrigerating power of the invention is continuously larger than zero and is uninterrupted. Referring to fig. 7, the change in total refrigeration capacity over time during a five-cycle is shown. From fig. 7, it can be seen that the refrigeration system assembly of the present inventionThe cold quantity is continuously increased along with time without interruption, which indicates that the invention can continuously and circularly work for refrigeration.
The foregoing is a description of embodiments of the invention, and it will be apparent to those skilled in the art that various modifications and variations can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. An uninterruptible refrigeration system based on positive and negative electric card effects, comprising: a positive card effect module, a negative card effect module, a hot side heat exchanger, a cold side heat exchanger, and a fluid pump; the method is characterized in that:
the input end of the hot-end heat exchanger is respectively connected with the output end of the hot end of the positive electricity card effect module and the output end of the hot end of the negative electricity card effect module through a pipeline provided with a pipeline switch; the output end of the hot-end heat exchanger is respectively connected with the input end of the hot end of the positive electricity card effect module and the input end of the hot end of the negative electricity card effect module through a pipeline provided with a pipeline switch;
the input end of the cold end heat exchanger is respectively connected with the output end of the cold end of the positive electricity card effect module and the output end of the cold end of the negative electricity card effect module through a pipeline provided with a pipeline switch; the output end of the cold end heat exchanger is respectively connected with the input end of the cold end of the positive electricity card effect module and the input end of the cold end of the negative electricity card effect module through a pipeline provided with a pipeline switch;
the fluid pump is arranged at the output end or the input end of the cold-end heat exchanger or the input end or the output end of the hot-end heat exchanger;
the pipeline switch controls the opening or closing of the corresponding pipeline, so that the positive electricity card effect module, the negative electricity card effect module, the hot end heat exchanger and the cold end heat exchanger form an enclosed space, a heat transfer medium flows in the enclosed space, and heat exchange is carried out in the hot end heat exchanger or the cold end heat exchanger.
2. An uninterruptible refrigeration system based on the positive and negative card effect according to claim 1, wherein: the positive electricity card effect module and the negative electricity card effect module are formed by nesting a plurality of concentric circular tubes, each circular tube is formed by two concentric circular tube-shaped electrodes and an electric card material clamped between the electrodes, and liquid heat transfer medium is filled between the adjacent circular tubes.
3. An uninterruptible refrigeration system based on the positive and negative card effect according to claim 2, wherein: the positive electricity card material is selected from P (VDF-TrFE-CFE) and KNbO 3 、Pb(Sc 0.5 Ta 0.5 )O 3 、BaZr 0.2 TiO 3 Is one of the materials of negative electricity card selected from Bi 5 Ti 5 AlO 15 、PbZr 0.5 O 3 、Hf 0.5 Zr 0.5 O 2 、Bi 0.5 (K 0.15 Na 0.85 ) 0.5 TiO 3 One of them.
4. An uninterruptible refrigeration system based on the positive and negative card effect according to claim 2, wherein: the heat transfer medium is selected from one of deionized water and silicone oil.
5. An uninterruptible refrigeration system based on the positive and negative card effect according to claim 1, wherein: the pipeline switch is an electromagnetic valve.
6. A continuous refrigeration method implemented by adopting the uninterrupted refrigeration system based on positive and negative electric card effect as claimed in any one of claims 1-4, comprising the following steps:
the first step: electrifying the positive electricity card effect module and the negative electricity card effect module, wherein the temperature of the positive electricity card effect module is increased, and the temperature of the negative electricity card effect module is reduced;
and a second step of: closing the input end of the hot end of the positive electricity card effect module, the input end of the cold end of the positive electricity card effect module, the output end of the hot end of the negative electricity card effect module and the output end of the cold end of the negative electricity card effect module by using the pipeline switch;
and a third step of: starting a fluid pump, driving a warmed heat transfer medium in the positive charge card effect module to enter the hot end heat exchanger to release heat, then entering the negative charge card effect module to further cool after the heat is restored to the ambient temperature, then entering the cold end heat exchanger to perform heat exchange, realizing refrigeration cooling of the ambient environment of the cold end heat exchanger, and returning the heat transfer medium to the positive charge card effect module after the temperature of the heat transfer medium is raised to the ambient temperature;
fourth step: at this time, the electric fields of the positive electricity card effect module and the negative electricity card effect module are removed, the temperature of the positive electricity card effect module is reduced, and the temperature of the negative electricity card effect module is increased; simultaneously, the output end of the hot end of the positive electricity card effect module, the output end of the cold end of the positive electricity card effect module, the input end of the hot end of the negative electricity card effect module and the input end of the cold end of the negative electricity card effect module are closed by the pipeline switch;
fifth step: under the drive of a fluid pump, the warmed heat transfer medium in the negative electricity card effect module enters the hot end heat exchanger to release heat, and then enters the positive electricity card effect module to be further cooled after being restored to the ambient temperature, and then enters the cold end heat exchanger to be subjected to heat exchange, so that the refrigeration cooling of the ambient environment of the cold end heat exchanger is realized, and the heat transfer medium returns to the negative electricity card effect module after being warmed; completing one refrigeration cycle; returning to the first step, and performing circulation refrigeration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311563220.0A CN117722791A (en) | 2023-11-22 | 2023-11-22 | Uninterrupted refrigerating system and refrigerating method based on positive and negative electric card effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311563220.0A CN117722791A (en) | 2023-11-22 | 2023-11-22 | Uninterrupted refrigerating system and refrigerating method based on positive and negative electric card effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117722791A true CN117722791A (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311563220.0A Pending CN117722791A (en) | 2023-11-22 | 2023-11-22 | Uninterrupted refrigerating system and refrigerating method based on positive and negative electric card effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117722791A (en) |
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- 2023-11-22 CN CN202311563220.0A patent/CN117722791A/en active Pending
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