CN1099009C - Refrigerating method by phase change induced by electric field - Google Patents
Refrigerating method by phase change induced by electric field Download PDFInfo
- Publication number
- CN1099009C CN1099009C CN99116225A CN99116225A CN1099009C CN 1099009 C CN1099009 C CN 1099009C CN 99116225 A CN99116225 A CN 99116225A CN 99116225 A CN99116225 A CN 99116225A CN 1099009 C CN1099009 C CN 1099009C
- Authority
- CN
- China
- Prior art keywords
- electric field
- phase change
- phase
- ferroelectric
- refrigeration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005684 electric field Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008859 change Effects 0.000 title claims abstract description 13
- 238000005057 refrigeration Methods 0.000 claims abstract description 24
- 239000003507 refrigerant Substances 0.000 claims abstract 2
- 229910002112 ferroelectric ceramic material Inorganic materials 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 abstract description 11
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 20
- 230000009466 transformation Effects 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000028161 membrane depolarization Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000005679 Peltier effect Effects 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000001073 sample cooling Methods 0.000 description 1
Images
Classifications
-
- 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
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
-
- 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
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/001—Details of machines, plants or systems, using electric or magnetic effects by using electro-caloric effects
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
本发明涉及一种制冷的方法，一种利用外加电场诱导陶瓷相变制冷的方法。本发明采用铁电陶瓷作为制冷工质，在铁电陶瓷上慢速加上电场、快速退去电场，以诱导其内部产生相变，利用电场诱导顺电一铁电相所发生的相变潜热的释放与吸收产生致冷。本发明的制冷工质成本低、可重复多次使用，不会造成环境的污染和破坏，在半导体芯片的过热保护、可移动式小功率冷暖风机、风扇或小型医疗冷冻箱等应用具有良好的前景。The invention relates to a refrigeration method, which is a refrigeration method induced by an external electric field to induce ceramic phase change. The present invention uses ferroelectric ceramics as the refrigerant, applies an electric field slowly on the ferroelectric ceramics, and quickly recedes the electric field to induce a phase change inside it, and utilizes the electric field to induce the release of the latent heat of the phase change that occurs in the paraelectric-ferroelectric phase Cooling occurs with absorption. The refrigerating medium of the present invention is low in cost, can be used repeatedly, does not cause environmental pollution and damage, and has good application in overheat protection of semiconductor chips, movable low-power cooling and heating fans, fans or small medical freezers. prospect.
Description
The present invention relates to a kind of method of refrigeration, particularly a kind of method of utilizing extra electric field to induce the ferroelectric ceramics freezing by change of state.
Except that conductor refrigeration (peltier effect), the existing cooling technic that has obtained to use all is operation material (working medium) to be undergone phase transition and from the absorption of latent heat of phase change with discharge the effect that reaches refrigeration by non-thermal type (pressurization, added electric field or magnetic field).For example, existing refrigerator and air-conditioner all are to utilize the variation of pressure to induce the gas-liquid phase in fluorine Lyons to become refrigeration.But because the refrigeration working medium fluorine Lyons that once was widely used is progressively forbidden the serious day by day destruction of atmospheric ozone layer, though employing can utilize existing equipment for the new working medium in fluorine Lyons, whether the new working medium with similar structures can be destroyed environment and still remain long-term assessment.In seeking new refrigeration method, the nigh the eighties that is applied in of adiabatic magnetic cooling once became hot topic.People are making great efforts to seek suitable magnetic cooling medium material, to improve cryomagnetic refrigeration output and efficient.But the difficult labour of highfield size is given birth to and the expensive development and the application that has also limited room-temperature magnetic refrigeration of rareearth magnetic material.The principle of depolarization refrigeration is similar, but because the size of electrode square is bigger than magnetic moment, so the fuel factor that Entropy Changes causes is littler than magnetic cooling, depolarization refrigeration also is difficult to practical application.
The method that the purpose of this invention is to provide a kind of refrigeration, its refrigeration working medium cost is low, can repeat repeatedly to use, and can not cause pollution and destruction to environment.
Feature of the present invention is to adopt ferroelectric ceramic material as refrigeration working medium, add at a slow speed that at ferroelectric ceramic material electric field produces phase transformation to induce it, be transformed into ferroelectric phase by paraelectric phase, it is paraelectric phase that the electric field of decorporating fast then makes ferroelectric phase transition, the speed of ferroelectric ceramic material added electric field is less than the speed of moving back electric field, the time of added electric field is 0.1 to 10 second at a slow speed, and the time of moving back electric field fast is 0.1 to 10
-6Second.In whole process of refrigerastion, when ferroelectric ceramics becomes the heat release of ferroelectric phase society from paraelectric phase, become paraelectric phase society heat absorption from ferroelectric phase, the release that using electric field is induced the latent heat of phase change that para-electric-ferroelectric phase produces is freezed with absorbing, and utilizes to change the variation that adds, moves back electric field speed and improve refrigerating efficiency.The present invention has modification BaTiO as the ferroelectric ceramic material of refrigeration working medium
3, (Ba
1-XSr
X) TiO
3(0＜X＜1), (Ba
1-XCa
X) (Sn
XTi
1-X) O
3(0＜X＜0.2), (Ba
1-XCa
X) (Zr
XTi
1-X) O
3(0＜X＜0.2), Ba (Sn
XTi
1-X) O
3(0＜X＜1), Pb (Ta
0.5Sc
0.5) O
3, (Ka
0.6Li
0.4), (Ta
0.7Ni
0.3) O
3, Sr
4Yb
2Fe
2Nb
8O
30, (1-X) Pb (Mg
1/3Nb
2/3) O
3+ XPbTiO
3(0.01＜X＜0.1) (being called for short PMN-PT), Sr
XBa
1-XNb
2O
6(0.5＜X＜0.9) etc.
In the present invention, we propose according to the speed scale rate of energy dissipation in phase transformation (heat) circulation: utilize low speed extra show in the pottery and energy net value that the phase transformation circulation of withdrawing from the arena is at a high speed absorbed is also obeyed the characteristics of speed scale, with the low speed extra show latent heat of emitting is minimized, make the latent heat of absorption increase to maximum with withdrawing from the arena fast then, make induced transformation can produce certain refrigerating capacity an electricity circulation.We have realized that the clean cooling amount of once above-mentioned electricity circulation reaches 1.5K～5K.In this course, the merit that outer place is done is except that a part is used for refrigeration, and another part is absorbed by phase transformation acoustic emission and generation of defects and process of self-organization thereof.The then available following method of the self-organizing of defective is eliminated, and adds and withdraws from the arena and make alternating voltage progressively be reduced to zero as regularly carrying out sinusoid, so just can eliminate residual residual polarization (for example, boosting to the civil power in 50 weeks of required voltage).Also can heat 15～20 ℃, be cooled to operating temperature again after making working medium all change paraelectric phase into.In this process of refrigerastion, working medium can be used repeatedly, and cost is reduced greatly, also can not cause the pollution to environment.
Below we are described in further detail the present invention in conjunction with the accompanying drawings.
Fig. 1 is for measuring the installation drawing of electric field-induced phase transition refrigeration.
Fig. 2 is refrigeration ferroelectric ceramics sample structure figure.
Fig. 3 is BaTiO
3Ceramics sample when withdrawing from the arena for 127 ℃, withdraw from the arena the time with the cooling relation curve.
The temperature slippage that Fig. 4 withdraws from the arena and causes when the different operating temperature for the PMN-PT sample.
Among Fig. 1,1 is high voltage source, and its high-voltage output end connects ferroelectric ceramics sample 3 through μ A ammeter 2, Differential thermocouple 4 connects X-t recorder 5, cold and hot end a, the b of thermocouple 4, ferroelectric ceramics sample 3 and temperature Degree meter 6 places in the conduction oil 8 that vacuum flask 7 contains, and 9 is fixed support, stationary heat galvanic couple 4 and thermometer 6.
Fig. 2 is the structure chart of Fig. 1 ferroelectric ceramics sample 3, and wherein 3 is the ferroelectric ceramics sample, and 14 is the sample table The silver coating of face, 15 for being attached to the mica sheet on silver coating surface, and b is thermocouple.
Among Fig. 3, sample is doping BaTiO3Type nano ceramics disk, diameter 10mm, thickness 2mm, 127 ℃ of operating temperatures, applied field intensity are 2500KV/m, abscissa for the time of withdrawing from the arena (minute), Ordinate is the temperature difference (K) of sample and medium. Because differential thermocouple cold junction and sample room have pressed from both sides an insulation Sheet, thus measured Δ T and real time postpone to some extent.
Among Fig. 4, sample is PMN-PT ceramic material 95%Pb (Mg1/3Nb
2/3)O
3+5％PbTiO
3, Abscissa represents operating temperature (K), and ordinate represents sample cooling amount (K), and curve 1 is the sample added electric field The cooling amount is with the variation relation of operating temperature during 2500KV/m; Curve 2 is sample added electric field 1600 The cooling amount is with the variation relation of operating temperature during KV/m; Curve 3 falls when being sample added electric field 1600KV/m The temperature amount is with the variation relation of operating temperature; The cooling amount was with work when curve 4 was sample added electric field 800KV/m The variation relation of temperature.
Be described further below in conjunction with embodiment.
With Sr
0.7Ba
0.3Nb
2O
3As refrigeration working medium, operating temperature is 60 ℃, sample shape is the disk of diameter 15mm, thickness is 0.5mm, plate silver as electrode on both sides, extra electric field intensity is 1500KV/m, the latent heat of emitting during with 10 seconds extra shows is 0.25J/g, with extra show in 5 seconds, the latent heat of emitting is the 0.3J/g level, and when withdrawing from the arena with 0.1 second, the latent heat of its absorption is the 0.8J/g level, when withdrawing from the arena with 0.01 second, the latent heat of its heat absorption is about 0.9J/g, as with 0.001 second or withdraw from the arena more at a high speed and then can reach the 1J/g level.Therefore, refrigerating capacity hourly can reach the level of 0.36KJ/g, can enter practical stage.We are applied to the following aspects with the research and development of this refrigerating method at present:
1, carries the chilled air fan or the small-sized air-cooler of a heat radiation airduct of only when extra show, working;
2, be used for chip overheating protector (sheet), make chip in use be no more than set point of temperature (such as, 60 or 70 ℃);
3, increase the working medium deal, also can be used for not being with the air-cooler of the little clean cooling power of packaged type of warm-air pipe;
4, be used for not being with warm-air pipe, the packaged type chilled air fan;
5, small-sized medical household freezer;
6, in use adopted " electricity activates and recovers and the hot the recovery " technology that overcomes the electric fatigue that causes owing to self organization phenomenon in the nonequilibrium phase transition.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99116225A CN1099009C (en) | 1999-06-04 | 1999-06-04 | Refrigerating method by phase change induced by electric field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99116225A CN1099009C (en) | 1999-06-04 | 1999-06-04 | Refrigerating method by phase change induced by electric field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1276506A CN1276506A (en) | 2000-12-13 |
| CN1099009C true CN1099009C (en) | 2003-01-15 |
Family
ID=5279061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99116225A Expired - Fee Related CN1099009C (en) | 1999-06-04 | 1999-06-04 | Refrigerating method by phase change induced by electric field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1099009C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436966C (en) * | 2004-03-30 | 2008-11-26 | 制冷技术应用公司 | Heat generator comprising a magneto-caloric material and thermie generating method |
| CN102192614A (en) * | 2010-03-12 | 2011-09-21 | 香港理工大学 | A chip microrefrigerator using lead-free ferroelectric material |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003108268A (en) * | 2001-09-28 | 2003-04-11 | Nec Gumma Ltd | Apparatus for information processing and cooling method therefor |
| CN100357675C (en) * | 2003-06-19 | 2007-12-26 | 中国科学院电工研究所 | Method for making ferroelectric thin / thick film micro electromechanical refrigerator, its arrangement and refrigerator system |
| CN100557340C (en) * | 2004-10-14 | 2009-11-04 | 中国科学院电工研究所 | A kind of microrefrigerator and refrigeration method thereof |
| CN106123391A (en) * | 2016-06-21 | 2016-11-16 | 上海工程技术大学 | A kind of all solid state electricity card refrigerator |
| CN106091471A (en) * | 2016-06-21 | 2016-11-09 | 上海工程技术大学 | A kind of electricity card refrigerator |
| CN106784291B (en) * | 2016-11-18 | 2023-08-18 | 南方科技大学 | Refrigeration device and its preparation method |
| CN110906583B (en) * | 2019-11-21 | 2021-02-19 | 华南理工大学 | A refrigeration device under the action of an electrostatic field |
-
1999
- 1999-06-04 CN CN99116225A patent/CN1099009C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100436966C (en) * | 2004-03-30 | 2008-11-26 | 制冷技术应用公司 | Heat generator comprising a magneto-caloric material and thermie generating method |
| CN102192614A (en) * | 2010-03-12 | 2011-09-21 | 香港理工大学 | A chip microrefrigerator using lead-free ferroelectric material |
| CN102192614B (en) * | 2010-03-12 | 2012-11-07 | 香港理工大学 | Chip type micro refrigerator applying lead-free ferroelectric material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1276506A (en) | 2000-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hou et al. | Materials, physics and systems for multicaloric cooling | |
| Ožbolt et al. | Electrocaloric vs. magnetocaloric energy conversion | |
| CN1099009C (en) | Refrigerating method by phase change induced by electric field | |
| Aprea et al. | Electrocaloric refrigeration: an innovative, emerging, eco-friendly refrigeration technique | |
| CN203068865U (en) | Miniature refrigerator | |
| CN107401852B (en) | Solid state refrigerator with thermoacoustic drive | |
| Aprea et al. | A comparison between electrocaloric and magnetocaloric materials for solid state refrigeration | |
| Baheta et al. | Thermoelectric air-conditioning system: building applications and enhancement techniques | |
| CN106091471A (en) | A kind of electricity card refrigerator | |
| CN106123392A (en) | A kind of electricity card refrigeration system | |
| CN106123391A (en) | A kind of all solid state electricity card refrigerator | |
| Kang et al. | Electromagnetic-driven electrocaloric cooling device based on ternary ferroelectric composites | |
| JP3118240U (en) | Semiconductor cooling / heating appliances | |
| CN112066591A (en) | Thermo-electromagnetic composite refrigeration system | |
| CN106382763B (en) | All-solid-state room temperature ferroelectric refrigerator based on thermal switch | |
| Johra | Performance overview of caloric heat pumps: magnetocaloric, elastocaloric, electrocaloric and barocaloric systems | |
| CN108662806A (en) | A kind of two phase flow refrigerating plant based on electrocaloric effect | |
| CN100557340C (en) | A kind of microrefrigerator and refrigeration method thereof | |
| CN104830284A (en) | Application of Rare Earth R2BaCuO5 Oxide Material in Low Temperature Magnetic Refrigeration | |
| CN106091470A (en) | A kind of refrigeration plant and refrigerating method thereof | |
| CN103468224B (en) | The application in low temperature magnetic freezes of a kind of rare earth RPdIn material | |
| Kehileche et al. | Numerical prediction of thermal performance of an electrocaloric device based on ceramic material | |
| CN1743766A (en) | Using semiconductor heating and cooling appliances | |
| CN1485586A (en) | Cold Feedback System for Magnetic Liquid Refrigeration | |
| Kehileche et al. | Numerical Modeling of a Multilayer Electrocaloric Refrigeration System Using CFD Comsol Multiphysics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20030115 |