WO1997027265B1 - Reversible liquid/solid phase change compositions - Google Patents
Reversible liquid/solid phase change compositionsInfo
- Publication number
- WO1997027265B1 WO1997027265B1 PCT/US1997/001355 US9701355W WO9727265B1 WO 1997027265 B1 WO1997027265 B1 WO 1997027265B1 US 9701355 W US9701355 W US 9701355W WO 9727265 B1 WO9727265 B1 WO 9727265B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- composition
- nucleator
- thermal energy
- phase change
- solid phase
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract 44
- 230000002441 reversible Effects 0.000 title claims abstract 8
- 239000007790 solid phase Substances 0.000 title claims abstract 8
- 239000007791 liquid phase Substances 0.000 title claims abstract 7
- YIXJRHPUWRPCBB-UHFFFAOYSA-N Magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims abstract 8
- FGIUAXJPYTZDNR-UHFFFAOYSA-N Potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims abstract 8
- VWDWKYIASSYTQR-UHFFFAOYSA-N Sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims abstract 8
- 235000010333 potassium nitrate Nutrition 0.000 claims abstract 4
- 239000004323 potassium nitrate Substances 0.000 claims abstract 4
- 235000010344 sodium nitrate Nutrition 0.000 claims abstract 4
- 239000004317 sodium nitrate Substances 0.000 claims abstract 4
- 230000005496 eutectics Effects 0.000 claims abstract 3
- MFUVDXOKPBAHMC-UHFFFAOYSA-N magnesium;dinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MFUVDXOKPBAHMC-UHFFFAOYSA-N 0.000 claims 6
- VTHJTEIRLNZDEV-UHFFFAOYSA-L Magnesium hydroxide Chemical group [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims 5
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims 5
- 239000000347 magnesium hydroxide Substances 0.000 claims 5
- 238000004781 supercooling Methods 0.000 claims 3
- 238000002844 melting Methods 0.000 claims 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- 239000011777 magnesium Substances 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 239000011591 potassium Substances 0.000 claims 1
- 229910052700 potassium Inorganic materials 0.000 claims 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract 1
Abstract
Eutectic compositions of hydrated magnesium nitrate and either or both of sodium and potassium nitrate, as shown in the figure, are described and are useful as reversible liquid/solid phase change materials.
Claims
1. A reversible liquid/solid phase change
composition comprising a substantially eutectic binary mixture of magnesium nitrate hexahydrate and sodium nitrate.
2. The composition of claim 1 wherein said binary mixture is comprised of about 6 to about 9 weight percent sodium nitrate and about 91 to about 94 weight percent hydrated magnesium nitrate.
3. The composition of claim 2 which has a melting point of about 83ºC.
4. The composition of claim 1 and also comprising a nucleator, said composition having an average
supercooling of about 2ºC or less.
5. The composition of claim 2 and also comprising a nucleator, said composition having an average
supercooling of about. 2ºC or less.
6. This composition of claim 4 wherein said nucleator is magnesium hydroxide.
7. The composition of claim 5 wherein said nucleator is magnesium hydroxido.
8. A reversible liquid/solid phase change
composition comprising a substantially euteclic binary mixture of magnesium nitrate hexahydrate and potassium nitrate.
9. The composition of claim 8 wherein said binary mixture is comprised of about 24 to about 26 weight percent potassium nitrate and about 74 to about 76 weight percent hydrated magnesium nitrate.
10. The composi tion of claim 9 which has a meltlng point of about. 77°C.
11. The composition of claim 8 and also comprising a nucleator, said composition having an average
supercooling of about 2ºC or less.
12. The composition of claim 9 and also comprising a nucleator, sa id composition having a n average
supercooIing of about 2ºC or less.
13. The composition of claim 11 wherein said
nucleator is magnesium hydroxide.
14. The composition of claim 12 wherein said
nucleator is magnesium hydroxide.
15. A reversible Iiquid /solid phase change
composition comprising a substantially eutectic ternary mixture of magnesium nitrate hexahydrate, sodium nitrate, and potassium nitrato.
16. The composition of claim 1 wherein said ternary mixtυre is comprised of about 6 to about 8 weight percent sodium nltrate. about 23 to about 26 weight percent potassium nitrate and about 67 to about 71 weight percent. hydrated magnesium nitrate.
17. The composition of claim 16 which has a melting point of about 65 ºC.
18. The composition of claim 15 and also comprising a nucleator.
19. The composition of claim 16 and also comprising a nucleator.
20. The composition of claim 18 wherein said
nucleator is magnesium hydroxide.
21. The composition of claim 19 wherein said
nucleator is magnesium hydroxide.
22 . A method for storing and releasing thermal energy, comprising
charging a reversible liquid/solid phase change composition according to claim 1 with thermal energy, said charging including bringing said composition to a temperature above about 83ºC so as to melt said
composition; and,
thereafter allowing said composition to release thermal energy.
23. A method for storing and releasing thermal energy, comprising:
charging a reversible liquid/solid phase change composition according to claim 8 with thermal energy, said charging including bringing said composition to a temperature above about 71ºC so as to melt said composition; and,
thereafter allowing said composition to release thermal energy.
24. A method for storing and releasing thermal energy, comprising:
charging a reversible liquid/solid phase change composition according to claim 15 with thermal energy, said charging including bringing said composition to a temperature above about 65°C so as to melt said composition; and,
thereafter allowing said composition to release thermal energy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/589,927 US5785884A (en) | 1996-01-23 | 1996-01-23 | Reversible liquid/solid phase change compositions |
| US08/589,927 | 1996-01-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1997027265A1 WO1997027265A1 (en) | 1997-07-31 |
| WO1997027265B1 true WO1997027265B1 (en) | 1997-08-28 |
Family
ID=24360145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/001355 WO1997027265A1 (en) | 1996-01-23 | 1997-01-23 | Reversible liquid/solid phase change compositions |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5785884A (en) |
| WO (1) | WO1997027265A1 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5976400A (en) * | 1997-09-19 | 1999-11-02 | Thermo Solutions, Inc. | Phase change material and use |
| US6083418A (en) * | 1998-06-02 | 2000-07-04 | Modine Manufacturing Company | Density stabilized phase change material |
| BR9902449A (en) * | 1998-06-02 | 2000-05-30 | Modine Mfg Co | Density stabilized phase transfer material. |
| US6784356B1 (en) * | 1999-04-09 | 2004-08-31 | Modine Manufacturing Company | Phase change material with inhibitor and a method of making the same |
| DE19946065A1 (en) | 1999-09-25 | 2001-04-26 | Merck Patent Gmbh | Salt mixtures for storing thermal energy in the form of phase change heat and their application |
| US6574971B2 (en) * | 2000-07-03 | 2003-06-10 | Galen J. Suppes | Fatty-acid thermal storage devices, cycle, and chemicals |
| AU2001294642A1 (en) | 2000-09-21 | 2002-04-02 | Outlast Technologies, Inc. | Stable phase change materials for use in temperature regulating synthetic fibers, fabrics and textiles |
| US6855422B2 (en) * | 2000-09-21 | 2005-02-15 | Monte C. Magill | Multi-component fibers having enhanced reversible thermal properties and methods of manufacturing thereof |
| US7160612B2 (en) | 2000-09-21 | 2007-01-09 | Outlast Technologies, Inc. | Multi-component fibers having enhanced reversible thermal properties and methods of manufacturing thereof |
| US6793856B2 (en) | 2000-09-21 | 2004-09-21 | Outlast Technologies, Inc. | Melt spinable concentrate pellets having enhanced reversible thermal properties |
| US9434869B2 (en) | 2001-09-21 | 2016-09-06 | Outlast Technologies, LLC | Cellulosic fibers having enhanced reversible thermal properties and methods of forming thereof |
| US9873305B2 (en) | 2008-02-22 | 2018-01-23 | Dow Global Technologies Inc. | Heater module including thermal energy storage material |
| US9038709B2 (en) | 2008-02-22 | 2015-05-26 | Dow Global Technologies Llc | Thermal energy storage materials |
| JP2011527740A (en) * | 2008-02-22 | 2011-11-04 | ダウ グローバル テクノロジーズ エルエルシー | Heat storage device |
| CN102144139B (en) | 2008-02-22 | 2013-06-05 | 陶氏环球技术公司 | Thermal energy storage materials |
| US7600506B2 (en) | 2008-03-12 | 2009-10-13 | ITB Group Ltd | Fuel tank having improved thermal stability |
| US8354040B1 (en) | 2010-05-14 | 2013-01-15 | The United States Of America As Represented By The Secretary Of Agriculture | Carbonate phase change materials |
| US11306238B2 (en) * | 2019-10-03 | 2022-04-19 | King Fahd University Of Petroleum And Minerals | Shape-stabilized phase change materials for energy storage |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB365623A (en) * | 1930-10-16 | 1932-01-18 | James Vernon Martin | Improvements in motor road vehicles |
| US4273666A (en) * | 1979-11-02 | 1981-06-16 | The Dow Chemical Company | Hydrated Mg(NO3)2 reversible phase change compositions |
| US4271029A (en) * | 1979-11-02 | 1981-06-02 | The Dow Chemical Company | Hydrated Mg(NO3)2 reversible phase change compositions |
| US4272391A (en) * | 1979-11-02 | 1981-06-09 | The Dow Chemical Company | Hydrated Mg(NO3)2 reversible phase change compositions |
| US4272392A (en) * | 1979-11-02 | 1981-06-09 | The Dow Chemical Company | Hydrated Mg(NO3)2 /MgCl2 reversible phase change compositions |
| US4283298A (en) * | 1979-11-02 | 1981-08-11 | The Dow Chemical Company | Hydrated Mg(NO3)2 /NH4 NO3 reversible phase change compositions |
| WO1989009249A1 (en) * | 1988-03-30 | 1989-10-05 | Nikolaos Malatidis | Phase-transition material for storing heat in the form of latent heat of transformation |
-
1996
- 1996-01-23 US US08/589,927 patent/US5785884A/en not_active Expired - Lifetime
-
1997
- 1997-01-23 WO PCT/US1997/001355 patent/WO1997027265A1/en active Application Filing
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