WO2020117065A1 - Multi-directional isotherm heat extractor - Google Patents
Multi-directional isotherm heat extractor Download PDFInfo
- Publication number
- WO2020117065A1 WO2020117065A1 PCT/NO2019/050260 NO2019050260W WO2020117065A1 WO 2020117065 A1 WO2020117065 A1 WO 2020117065A1 NO 2019050260 W NO2019050260 W NO 2019050260W WO 2020117065 A1 WO2020117065 A1 WO 2020117065A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat
- fluid
- heat extractor
- working fluid
- extractor according
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract description 70
- 238000009835 boiling Methods 0.000 claims abstract description 19
- 238000000605 extraction Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000010792 warming Methods 0.000 claims 1
- 230000001965 increasing effect Effects 0.000 description 7
- 230000004907 flux Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F99/00—Subject matter not provided for in other groups of this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0233—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the conduits having a particular shape, e.g. non-circular cross-section, annular
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
- H01L23/427—Cooling by change of state, e.g. use of heat pipes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/40—Thermal components
- H02S40/42—Cooling means
- H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
- F28D2021/0029—Heat sinks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2210/00—Heat exchange conduits
- F28F2210/10—Particular layout, e.g. for uniform temperature distribution
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
- H01L23/427—Cooling by change of state, e.g. use of heat pipes
- H01L23/4275—Cooling by change of state, e.g. use of heat pipes by melting or evaporation of solids
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention describes a multi-directional isotherm heat extractor (1) functioning within a chosen working range of temperatures. The heat extractor comprises an extraction side (2), thermally attached to and shaped after the object for heat extraction and an ambient side (4) comprising hollow protrusions (5) protruding from the ambient side (4), wherein the two sides and protrusions form one fluid chamber (6). The heat extractor further comprises a working fluid (3). The space of the fluid chamber (6) is filled over 50% with working fluid, and the working fluid and pressure in the fluid chamber (6) is chosen such that the fluid is kept in the boiling regimes when the extraction side (2) is within the chosen working range of temperatures.
Description
Title: Multi-directional isotherm heat extractor
Field of the invention
The present invention relates to heat extractors for heat exchange in industrial processes and smaller entities where isotherm conditions are desirable.
Background of the invention
Many industrial processes require cooling. It is commonly known that cooling of the surface is expressed by equation Q = h x A x DT, where Q is the heat transferred from the hot part to the cold part, h is the specific heat transfer coefficient, A is the heat transfer surface area and DT is a temperature difference between the hot and cold part. The temperature difference is determined by surroundings, so the possibility to transfer more or less heat from the hot part to the cold part can be influence by change of h or A.
Heat transfer coefficient between two parts is influenced for example by surface roughness, fluids thermal properties, fluid velocity, color of the surface, level of contact etc. However, those changes have only marginal influence on the overall heat transfer. Increasing of the heat transfer area will have a large impact on the heat transferred. Also use of materials or substances with a higher thermal conductivity will have an impact. But what is the optimal way to do it?
Related prior art
The cooling area can be increased by introduction of cooling fins on top of the base, but this effect is limited. While the heat transfer area is increased, the temperature of the fins is not uniform and decreases along the fins due a to low thermal conductivity of the material of the fins and due to the low cross section of the fins. The same consideration is valid for other traditional heatsinks.
US2013/029374 A1 describes heat management devices and structures that can be used in lamps having solid state light sources such as one or more LEDs. Some lamp embodiments comprise one or more phase change radiators that utilize the latent heat of fluids to circulate and draw heat away from the LEDs and radiate the heat into the ambient, allowing for the LEDs to operate at a lower temperature. Some phase change radiators according to the present invention can comprise a main radiator body and multiple radiator coolant loops mounted to the body. The present invention relies on the circulation of heated fluid through the radiator body to radiate heat from the LEDs. The heated liquid moves away from the LEDs and is circulated back to thermal contact with the LEDs thought the coolant loops.
US 6062302 describes a heat sink with a heat transfer medium for enhancing the heat transferring ability of the heat sink. In one embodiment, the heat sink comprises a plurality of fins with cavities, a
base and a fluid heat transfer medium. The fins are in thermal contact with the base and configured to form a series of longitudinal channels through which air or a fluid medium may pass. The fluid heat transfer medium contained within each of the cavities. The fluid heat transfer medium enhances the heat sink's ability to transfer heat without increasing its surface area, size and/or weight. This enhancement is due to the fluid heat transfer medium's latent heat of vaporization and
condensation. Specifically, a larger amount energy is required to vaporize the fluid heat transfer medium. Thus, a large amount of heat can be conducted from the base to the fluid heat transfer medium. Conversely, as the vaporized fluid heat transfer medium condenses on the upper cooler walls of the fins, a large amount of energy is conducted from the vaporized fluid heat transfer medium to the fins. Thus, a larger amount of heat can be conducted from the fluid heat transfer medium to the fins which can then dissipate the heat to lower temperature surroundings.
Objects of the invention
Increase the heat exchange area and heat transfer coefficient and providing an isothermal surface for a device for heat extraction of an object.
Summary of the invention
The invention describes a multi-directional isotherm heat extractor functioning within a chosen working range of temperatures. The heat extractor comprises a thermally attached heat extraction side, shaped after the object for heat extraction, a working fluid and an ambient side comprising hollow protrusions protruding from the ambient side, wherein the two sides and protrusions form one fluid chamber. The space of the fluid chamber is filled over 50% with working fluid and the working fluid boiling point and pressure in the fluid chamber is chosen in accordance to the working range temperature of the extraction side.
Brief description of drawings
Figure 1 shows a perspective view of one embodiment of the invention.
Figure 2 shows a section of a heat extractor with an adjustable insulation device.
Figure 3 shows another embodiment of the invention.
Figure 4 shows a section of an embodiment for cooling a circular object.
Figure 5 shows a curve illustrating how the boiling point varies with pressure.
Figure 6 shows a curve illustrating heat flux variation as a function of the difference between the temperature of the extraction side and the boiling point of the working fluid
Detailed description
In this text heat (Q) can be both positive and negative. The heat extractor can be used for cooling an object that is hotter than ambient temperature or it can be used for heating an object that is colder than ambient temperature. The invention takes advantage of the increased heat flux of the working fluid when the boiling working fluid is under high heat flux. As can be seen from figure 6 the heat flux
of water increases dramatically when nucleate boiling sets in and then decreases when the boiling is transitioned into film boiling and then increases again. This behavior is common for most of fluids. The different boiling regimes are called convection boiling, nucleate boiling, transition boiling and film boiling as seen in fig. 6. It should be noted that the curve is valid for 1 atm. In the heat extractor according to the invention the pressure will increase as the temperature increases and therefore the range wherein the working fluid will remain within the nucleate and transitional boiling regimes will be much wider.
The effect of the increased heat flux is that the temperature of the fluid will be uniform inside the entire fluid chamber and the heat will be more efficiently distributed to the surfaces on the ambient side. Preferably the material used in the heat extractor should be thin and have high thermal conductivity, but still be thick enough to withstand the pressure developing during heating. It is advantageous to stay within the boiling regime where the heat transfer from/to the fluid to/from the enclosure is optimal. We should not be confused by the fact that metals have a far higher thermal conductivity than most fluids, it is the convection and phase change of the fluids that are responsible for most of the heat transfer.
The heat extractor function can be compared with function of electrical transformer. The electrical power, voltage multiplied by current, on primary and secondary side of the transformer is same, when neglecting minimal losses, however the voltage and current can vary. For the heat extractor, the power is same while the area and temperature varies.
Figure 1 shows an embodiment of a multi-directional isotherm heat extractor 1 according to the invention. It comprises an ambient side 4 and an extraction side 2 as shown in figure 2. The heat extractor is designed to function within a chosen working range of temperatures. In one embodiment the heat extractor is designed to function within the range of 20 - 50 C. Then one must choose a pressure and a fluid which starts to boil at roughly 10 C. The fluid could be water in a vacuum. Filling level of the working fluid must take into consideration thermal expansions of the heat extractor as well as an expansion of the working fluid itself. Selection of the material for the fluid chamber of the heat extractor is based on the temperature level, the type of working fluid and on material compatibility with the working fluid. The fluid can be water, acetone, ammonia, mineral oils and metals for higher range of temperatures like sodium and even lithium or silver. The heat exchanger can be filled by the fluid under high vacuum or a predetermined pressure, which means that the fluid is boiling on a temperature according to the chosen pressure. As an example, water boils at 6,8 °C at pressure of 10 mbars, as shown in figure 5.
The extraction side 2 must be thermally attached and shaped after the object for heat exchange. The ambient side 4 comprising hollow protrusions 5 protruding from the ambient side 4, wherein the two sides and protrusions form one fluid chamber 6 which must contain a working fluid 3. The space of the fluid chamber 6 must be almost, but not entirely filled. Preferably it is filled with working fluid within the range of 50-99%, more preferably within 80-99 %, and most preferably within 95-99%. The working fluid and pressure in the fluid chamber 6 must be chosen such that the fluid is kept within the chosen working range of temperatures. For safety reasons it might advantageous to mount an overpressure valve in the heat extractor.
Heat from the object for heat extraction is transferred to the extraction side by conduction, convection and/or radiation to the extraction side 2 of the heat extractor 1. The working fluid 3 then starts boiling, and heat is efficiently transported to the surfaces on the ambient side. Because of the saturated conditions achieved, this means that the walls of the ambient side 4 will have same temperature everywhere. Transferring the heat by fluid in motion makes the system superior compared to traditional fins comprising mainly metal. Traditional fins increases the cooling area, however the heat transfer longitudinally through the fins is very limited due to the low cross section area and low thermal flux passing through the metal of the fins.
The amount of extracted heat can be controlled by variation of degree/area of thermal insulation of the cooling unit. Heat transfer of the ambient side can be controlled by heat transfer regulation means 7 providing thermal insulation. Such means may be an adjustable insulation device 7 as shown in figures 2-4.
In the case where the object to be cooled is a photovoltaic cell/panel, the heat dissipated into the surroundings can be increased easily 20 times and in addition the surface is kept isothermal. This means that the heat transfer from the photovoltaic cell/ panel will be 20 times higher and the electrical efficiency of the photovoltaic cell/ panel will increase by 0,5% for each °C the cell/ panel temperature is decreased. In addition to cooling of the photovoltaic cell/ panel in a uniform way, it will also eliminate hot spots in the photovoltaic semiconductors of the cell/panel. This form of cooling will contribute significantly to increase the yield and prolongation of the photovoltaic cell/ panel life time.
No fans, no pumps, no moving parts are required. The system can be used anywhere where there is room for fins. As an example, the heat extractor could be applied on primary aluminum cell sides in the aluminum industry and substitute less-efficient metallic fins used today. A working fluid suitable for this application could be for example naphthalene, water, mercury and the working temperature range would be 300 - 500 °C. Other possible application is cooling of aluminum cell structures and electrical busbars and rectifiers.
The area of large furnaces could be covered by Multi-directional isotherm heat extractors, ensuring uniform temperature of the furnaces surface, thus avoiding thermal stresses and the generation of cracks.
Inventory
1. Multi-directional isotherm heat extractor
2. Extraction side
3. Working fluid
4. Ambient side
5. Hollow protrusions
6. Fluid chamber
Claims
1. A multi-directional isotherm heat extractor (1) functioning within a chosen working range of temperatures comprising:
an extraction side (2), thermally attached to and shaped after the object for heat extraction,
an ambient side (4) comprising hollow protrusions (5) protruding from the ambient side (4), wherein the two sides and protrusions form one fluid chamber (6),
a working fluid (3),
wherein the space of the fluid chamber (6) is filled over 50% with working fluid, and the working fluid and pressure in the fluid chamber (6) is chosen such that the fluid is kept in the boiling regimes when the extraction side (2) is within the chosen working range of temperatures.
2. Heat extractor according to claim 1 wherein the working fluid is filled/inserted as liquid or solid under a predetermined pressure.
3. Heat extractor according to claim 1 wherein cooling of the ambient side is controlled by heat transfer regulation means (7).
4. Heat extractor according to claim 3 wherein the heat transfer regulation means is an insulation device (7) covering an adjustable area of the ambient side.
5. Heat extractor according to claim 1 wherein the chosen working range of the heat extractor is the range wherein the working fluid is kept at the nucleate and/or transition boiling regimes.
6. Heat extractor according to claim 3 wherein variation of the thermal insulation controls the amount of extracted heat.
7. Heat extractor according to claim 1 wherein an overpressure valve is mounted in the device.
8. Heat extractor according to claim 1 used for warming of the surroundings of the device.
9. Heat extractor according to claim 1 wherein the fluid chamber is filled with working fluid within the range of 80-99 %, and more preferably within 95-99%
10. Heat extractor according to claim 1, wherein heat is extracted from the ambient side and
released to the extraction side.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO20181571 | 2018-12-06 | ||
| NO20181571A NO345777B1 (en) | 2018-12-06 | 2018-12-06 | Multi-directional, isotherm heat extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020117065A1 true WO2020117065A1 (en) | 2020-06-11 |
Family
ID=70974634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/NO2019/050260 WO2020117065A1 (en) | 2018-12-06 | 2019-11-27 | Multi-directional isotherm heat extractor |
Country Status (2)
| Country | Link |
|---|---|
| NO (1) | NO345777B1 (en) |
| WO (1) | WO2020117065A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6062302A (en) * | 1997-09-30 | 2000-05-16 | Lucent Technologies Inc. | Composite heat sink |
| US20070025085A1 (en) * | 2005-07-29 | 2007-02-01 | Hon Hai Precision Industry Co., Ltd. | Heat sink |
| US20130249374A1 (en) * | 2012-03-26 | 2013-09-26 | Cree, Inc. | Passive phase change radiators for led lamps and fixtures |
| EP2713132A1 (en) * | 2012-09-26 | 2014-04-02 | Alcatel Lucent | A vapor-based heat transfer apparatus |
| US20160095256A1 (en) * | 2014-09-30 | 2016-03-31 | Subtron Technology Co., Ltd. | Heat dissipation module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2054563B1 (en) * | 1992-04-06 | 1995-10-16 | Anmella Jose Maria Nacenta | COMPLEX METAL PLATE FOR COOKING. |
-
2018
- 2018-12-06 NO NO20181571A patent/NO345777B1/en unknown
-
2019
- 2019-11-27 WO PCT/NO2019/050260 patent/WO2020117065A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6062302A (en) * | 1997-09-30 | 2000-05-16 | Lucent Technologies Inc. | Composite heat sink |
| US20070025085A1 (en) * | 2005-07-29 | 2007-02-01 | Hon Hai Precision Industry Co., Ltd. | Heat sink |
| US20130249374A1 (en) * | 2012-03-26 | 2013-09-26 | Cree, Inc. | Passive phase change radiators for led lamps and fixtures |
| EP2713132A1 (en) * | 2012-09-26 | 2014-04-02 | Alcatel Lucent | A vapor-based heat transfer apparatus |
| US20160095256A1 (en) * | 2014-09-30 | 2016-03-31 | Subtron Technology Co., Ltd. | Heat dissipation module |
Also Published As
| Publication number | Publication date |
|---|---|
| NO345777B1 (en) | 2021-08-02 |
| NO20181571A1 (en) | 2020-06-08 |
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