CA2179431A1 - An ecological thermoelectric cooling system - Google Patents
An ecological thermoelectric cooling systemInfo
- Publication number
- CA2179431A1 CA2179431A1 CA002179431A CA2179431A CA2179431A1 CA 2179431 A1 CA2179431 A1 CA 2179431A1 CA 002179431 A CA002179431 A CA 002179431A CA 2179431 A CA2179431 A CA 2179431A CA 2179431 A1 CA2179431 A1 CA 2179431A1
- Authority
- CA
- Canada
- Prior art keywords
- ecological
- cooling system
- thermoelectric cooling
- thermoelectric
- dissipator
- 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.)
- Abandoned
Links
- 238000001816 cooling Methods 0.000 title claims description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 3
- 230000008878 coupling Effects 0.000 claims abstract 2
- 238000010168 coupling process Methods 0.000 claims abstract 2
- 238000005859 coupling reaction Methods 0.000 claims abstract 2
- 239000013589 supplement Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 239000012774 insulation material Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 239000011810 insulating material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007775 late Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 235000014214 soft drink Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- 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
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/023—Mounting details thereof
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)
- Air-Conditioning For Vehicles (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
Ecological thermoelectric refrigerating system comprised of a thermoelectric plate by coupling to the latter a supplementary metal plate on the cold generating face (1) and two dissipators, one dissipator being arranged on the supplementary metal element and the other dissipator being refrigerated by natural or forced convection to the heat generating face (2). In order to avoid the thermal bridge between both faces and in order to provide mechanical rigidity to the assembly an isolating material is mounted between the two dissipators.
Description
217943~
AN ECOLOGICAL T~ERMOELECT~IC COOLING SYSTEM
DESCRIPTION
The system developed consists of the formation of a completely ecological cooling module, based on the usage of commercially available semiconductor elements. For the purposes of this, a heat transmission system has had to be developed which optimizes the power generated, attaining levels of performance unknown to date in the field of gas -free cooling (ecological refrigeration).
The module consists of a thermoelectric plate, of a type that is commercially available, to which a metal supplement is added, preferentially manufactured of aluminium, on the side which is to be used to generate cold: together with two dissipators, one on the heat emitting side and the other on the free side of the metal supplement.
The perfection of the contact between the surfaces in question tplate and supplement; plate - dissipator 1; free side of metal supplement - dissipator 2) is extremely important. For this purpose, the use of some highly conductive substance is advisable to ensure the quality of the contact (such as hig~l conductivity silicon or copper sulphate) thereby avoiding the appearance of harmful thermal resistances.
Another critical point of the system is the design of the dissipators and especially of the heat emitting side. The one used in our module is of our own design, on the basis of a commercially available dissipator. The modifications made to this have the aim of reducing, as far as is possible, thermal resistance (dissipator - atmosphere) for forced convection working~ To this end it has been machined, reducing its base to 4 mm and the width of its fins to 2 mm, while also leaving the latter completely straight. As a result of this, we obtain a thermal resistance of 0 . 05 C/W, working with an axial fan which %I 79~31 blows the air frontally onto the dissipator. The air, as has already been mentioned, must be blown frontally with the aim of achieving maximum turbulence, using commercially available low profile fans.
Some type of holding is needed to attain the mechanical rigidity of the module. This must be achieved without giving rise to any form of thermal bridge between the cooling side and that which emits heat. Account must be taken of the fact that if this anomaly does occur (for example, through the usage of metal bolts and nuts) then the resulting losses are of a high magnitude (approximately 32 ~6). It is for this reason that bolts and nuts of thermally insulatillg material must be used, or an intermediate plate of insulating material through which metal rods are bolted, from each dissipator in alternate fashion. This second solution is the one we use.
~s an example of the application of the syst~, a prototype has been developed, as is shown in figure 1, which consists of a tank of liquid (water, for example) to which on opposing sides six modules in two groups of three have been affixed, leaving the dissipators wit~l refrigerating sides ( 1) within the tank. The dissipators with heat emitting sides (2) remain on the outside, working in forced convection mode with the aid of low profile axial fans (3) .
Two such fans are used for each group of three modules, as was mentioned above, while the airflow is directed in front of the fans by means of small nozzles.
The mechanical rigidity of each module is achieved through the j oining of the two dissipators in the method shown in /figure 2. In this figure the part made of insulating material (1) may be seen, together with the metal rods (2) that are embedded in the said part without touohing one another, avoiding thermal bridges.
The supply of electricity to t~le modules is ensured by using a commercially available direct current power source.
AN ECOLOGICAL T~ERMOELECT~IC COOLING SYSTEM
DESCRIPTION
The system developed consists of the formation of a completely ecological cooling module, based on the usage of commercially available semiconductor elements. For the purposes of this, a heat transmission system has had to be developed which optimizes the power generated, attaining levels of performance unknown to date in the field of gas -free cooling (ecological refrigeration).
The module consists of a thermoelectric plate, of a type that is commercially available, to which a metal supplement is added, preferentially manufactured of aluminium, on the side which is to be used to generate cold: together with two dissipators, one on the heat emitting side and the other on the free side of the metal supplement.
The perfection of the contact between the surfaces in question tplate and supplement; plate - dissipator 1; free side of metal supplement - dissipator 2) is extremely important. For this purpose, the use of some highly conductive substance is advisable to ensure the quality of the contact (such as hig~l conductivity silicon or copper sulphate) thereby avoiding the appearance of harmful thermal resistances.
Another critical point of the system is the design of the dissipators and especially of the heat emitting side. The one used in our module is of our own design, on the basis of a commercially available dissipator. The modifications made to this have the aim of reducing, as far as is possible, thermal resistance (dissipator - atmosphere) for forced convection working~ To this end it has been machined, reducing its base to 4 mm and the width of its fins to 2 mm, while also leaving the latter completely straight. As a result of this, we obtain a thermal resistance of 0 . 05 C/W, working with an axial fan which %I 79~31 blows the air frontally onto the dissipator. The air, as has already been mentioned, must be blown frontally with the aim of achieving maximum turbulence, using commercially available low profile fans.
Some type of holding is needed to attain the mechanical rigidity of the module. This must be achieved without giving rise to any form of thermal bridge between the cooling side and that which emits heat. Account must be taken of the fact that if this anomaly does occur (for example, through the usage of metal bolts and nuts) then the resulting losses are of a high magnitude (approximately 32 ~6). It is for this reason that bolts and nuts of thermally insulatillg material must be used, or an intermediate plate of insulating material through which metal rods are bolted, from each dissipator in alternate fashion. This second solution is the one we use.
~s an example of the application of the syst~, a prototype has been developed, as is shown in figure 1, which consists of a tank of liquid (water, for example) to which on opposing sides six modules in two groups of three have been affixed, leaving the dissipators wit~l refrigerating sides ( 1) within the tank. The dissipators with heat emitting sides (2) remain on the outside, working in forced convection mode with the aid of low profile axial fans (3) .
Two such fans are used for each group of three modules, as was mentioned above, while the airflow is directed in front of the fans by means of small nozzles.
The mechanical rigidity of each module is achieved through the j oining of the two dissipators in the method shown in /figure 2. In this figure the part made of insulating material (1) may be seen, together with the metal rods (2) that are embedded in the said part without touohing one another, avoiding thermal bridges.
The supply of electricity to t~le modules is ensured by using a commercially available direct current power source.
2~79~31 In the definitive model, it will be possible to include a power source manufactured in - house within the system as a whole.
In the prototype the modules are equipped with 60 W ~ lates, attaining the f ollowing temperatures at an ambient temperature of 30 C:
Temperature on the cold side = - 10 C
Temperature on the hot side = 33~ C
Water temperature = - 2 C
If the cooling coil of a drink dispenser (such as one for beer or soft drinks) is placed within this equipment, then the liquid is cooled to a suitable degree.
Amongst the advantages of the system, the following points may be listed:
- Cooling without using refrigerating gas.
- The absence of moving parts (except for the fans) .
- High performance.
- Low voltage power supply.
- The simplicity of the system, given that it is very compact.
- Flexibility and ease of adaptation.
In the prototype the modules are equipped with 60 W ~ lates, attaining the f ollowing temperatures at an ambient temperature of 30 C:
Temperature on the cold side = - 10 C
Temperature on the hot side = 33~ C
Water temperature = - 2 C
If the cooling coil of a drink dispenser (such as one for beer or soft drinks) is placed within this equipment, then the liquid is cooled to a suitable degree.
Amongst the advantages of the system, the following points may be listed:
- Cooling without using refrigerating gas.
- The absence of moving parts (except for the fans) .
- High performance.
- Low voltage power supply.
- The simplicity of the system, given that it is very compact.
- Flexibility and ease of adaptation.
Claims (5)
1.- An ecological thermoelectric cooling system, of the type that makes use of the coldness generated by a thermoelectric plate through the coupling of the same to a metal supplement on the side generating coldness and two dissipators, respectively, one on the free side of the metal supplement, and the other on the heat generating side, cooled by natural or forced convection, essentially characterized in that mechanical rigidity as well as thermal insulation of the two faces are increased, together with interruption of the thermal bridge, by the different fixations of the two dissipators, in the non coaxial arrangement of their means of clamping.
2.- An ecological thermoelectric cooling system, according to the above claim, characterized in that overall mechanical rigidity is ensured by the means of clamping or rods (2) that are attached by threading or alternatively embedding in the intermediate plate or part (1) which is made of thermal insulation material, encircling the pair constituted by the metal supplement and the thermoelectric plate, rods (2) that are arranged in an alternative manner, that is, those that clamp the heat dissipator are offset respecting those which clamp the cold dissipator.
3.- An ecological thermoelectric cooling system, according to the above claims, characterized in that the heat dissipator may have fins or be, simply, the wall of the recipient or enclosure to be cooled.
4.- An ecological thermoelectric cooling system, according to the above claims 1 and 2, characterized in that the heat dissipator incorporates a finned heat exchanger working in forced convection with the aid of fans.
5.- An ecological thermoelectric cooling system, according to the above claims, characterized in that it permits the alternate cooling or heating of any type of material, solid, liquid or gas.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ESP9402192 | 1994-10-20 | ||
| ES9402192 | 1994-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2179431A1 true CA2179431A1 (en) | 1996-05-02 |
Family
ID=8287772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002179431A Abandoned CA2179431A1 (en) | 1994-10-20 | 1995-08-09 | An ecological thermoelectric cooling system |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0719993B1 (en) |
| JP (1) | JPH09507566A (en) |
| CN (1) | CN1137312A (en) |
| AT (1) | ATE148940T1 (en) |
| AU (1) | AU3167395A (en) |
| CA (1) | CA2179431A1 (en) |
| DE (1) | DE69500158D1 (en) |
| IL (1) | IL115686A0 (en) |
| MA (1) | MA23696A1 (en) |
| MX (1) | MX9602404A (en) |
| WO (1) | WO1996012920A1 (en) |
| ZA (1) | ZA958912B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001501775A (en) * | 1996-05-10 | 2001-02-06 | トライポート・インターナショナル・ジーエムビーエイチ | Improved thermoelectric unit with electrical input / output means |
| GB2331838A (en) | 1997-11-24 | 1999-06-02 | Coolbox | Portable,thermoelectric,temperature controlled receptacles. |
| GB2443657A (en) * | 2006-11-08 | 2008-05-14 | 4Energy Ltd | Thermoelectric refrigerating device |
| CN106403356B (en) * | 2016-10-09 | 2022-08-02 | 珠海格力电器股份有限公司 | Semiconductor refrigeration heat dissipation assembly, assembly method thereof and refrigeration equipment |
| US11828497B2 (en) * | 2020-03-10 | 2023-11-28 | B/E Aerospace, Inc. | Chilled liquid recirculation device for galley refrigeration systems |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB798882A (en) * | 1955-08-12 | 1958-07-30 | Gen Electric Co Ltd | Improvements in or relating to thermoelectric cooling units |
| US3040539A (en) * | 1960-04-27 | 1962-06-26 | Gen Motors Corp | Refrigerating apparatus |
| US3137141A (en) * | 1962-04-19 | 1964-06-16 | Halsey W Taylor Company | Thermoelectric water coolers |
| NL277587A (en) * | 1962-04-24 | |||
| US3247577A (en) * | 1962-12-28 | 1966-04-26 | Borg Warner | Thermoelectric module assembly technique |
| US3212274A (en) * | 1964-07-28 | 1965-10-19 | Eidus William | Thermoelectric condenser |
| US3733836A (en) * | 1972-01-17 | 1973-05-22 | Melbro Corp | Temperature controlled mobile cart |
| US4726193C2 (en) * | 1987-02-13 | 2001-03-27 | Marlow Ind Inc | Temperature controlled picnic box |
| ES2043537B1 (en) * | 1992-03-31 | 1995-04-01 | Cimacar Sl | ELECTRIC GENERATOR OF COLD OR HEAT. |
| US5398510A (en) * | 1994-01-12 | 1995-03-21 | Marlow Industries, Inc. | Superinsulation panel with thermoelectric device and method |
-
1995
- 1995-08-09 WO PCT/ES1995/000099 patent/WO1996012920A1/en active IP Right Grant
- 1995-08-09 EP EP95927743A patent/EP0719993B1/en not_active Expired - Lifetime
- 1995-08-09 CA CA002179431A patent/CA2179431A1/en not_active Abandoned
- 1995-08-09 JP JP8513657A patent/JPH09507566A/en active Pending
- 1995-08-09 AT AT95927743T patent/ATE148940T1/en not_active IP Right Cessation
- 1995-08-09 MX MX9602404A patent/MX9602404A/en unknown
- 1995-08-09 DE DE69500158T patent/DE69500158D1/en not_active Expired - Lifetime
- 1995-08-09 AU AU31673/95A patent/AU3167395A/en not_active Abandoned
- 1995-09-08 CN CN95191072A patent/CN1137312A/en active Pending
- 1995-10-19 MA MA24041A patent/MA23696A1/en unknown
- 1995-10-19 IL IL11568695A patent/IL115686A0/en unknown
- 1995-10-20 ZA ZA958912A patent/ZA958912B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU3167395A (en) | 1996-05-15 |
| DE69500158D1 (en) | 1997-03-27 |
| EP0719993B1 (en) | 1997-02-12 |
| ATE148940T1 (en) | 1997-02-15 |
| CN1137312A (en) | 1996-12-04 |
| WO1996012920A1 (en) | 1996-05-02 |
| JPH09507566A (en) | 1997-07-29 |
| IL115686A0 (en) | 1996-01-19 |
| EP0719993A1 (en) | 1996-07-03 |
| MX9602404A (en) | 1997-02-28 |
| ZA958912B (en) | 1996-06-03 |
| MA23696A1 (en) | 1996-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |