US4498459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase-change heat storage building panels
Assignee: Ben Gurion University of the Negev Research and Development Authority Ltd
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Filing: 1982-12-03
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Granted: 1985-02-12
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Expires: 2002-12-03
Abstract
Abstract The invention provides a phase change heat storage, light and temperature control building panel comprising a sealed housing having at least two walls transparent to visible light delimiting at least one intermediate space filled with a liquid-solid phase-change heat-storage material, wherein the material is substantially transparent to visible light in solid and in liquid phase, adsorbs heat while melting, releases heat while solidifying and undergoes phase change in a temperature range of about 5 DEG -28 DEG C. The invention also provides a method of day light and temperature control and night temperature control in dwelling units and plant enclosures utilizing the panels of the invention.
Inventors
- 👤 Eliyaho Korin
- 👤 Elazar Rappaport
- 👤 Dov Pasternak
- 👤 Aharon S. Roy
- 👤 David Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:29
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/24; A01G9/243; F; F24; F24S; F24S20/00; F24S20/60; F24S20/61; F24S20/63; F24S60/00; F24S60/10; F28; F28D; F28D20/00; F28D20/02; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y02B; Y02B10/00; Y02B10/20; Y02E; Y02E10/00; Y02E10/40; Y02E10/44; Y02E60/00; Y02E60/14; Y02P; Y02P60/00; Y02P60/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
A phase change heat storage, light and temperature control building panel comprising a sealed housing having at least two walls transparent to visible light delimiting at least one intermediate space filled with a liquid-solid phase-change heat-storage material wherein said material is a salt mixture comprising from about 10-90% CaBr 2 .6H 2 O, about 90-10% CaCl 2 .6H 2 O and a neucleating agent, said material being substantially transparent to visible light in solid and in liquid phase, adsorbs heat while melting, releases heat while solidifying and undergoes phase change at a temperature range of from about 5°-28° C.
Claim 2
Dependent Claim
99 words
A phase change heat storage, light and temperature control building panel comprising a sealed housing having at least two walls transparent to visible light delimiting at least one intermediate space filled with a liquid-solid phase-change heat-storage material wherein said material is a salt mixture comprising from about 10-90% CaBr 2 .6H 2 O, about 90-10% CaCl 2 .6H 2 O and a neucleating agent, said material being substantially transparent to visible light in solid and in liquid phase, adsorbs heat while melting, releases heat while solidifying and undergoes phase change at a temperature range of from about 5°-28° C.
Claim 3
Dependent Claim
29 words
A phase change heat storage light and temperature control building panel according to claim 1 wherein said salt mixture comprises SrCl 2 .6H 2 O as a neucleating agent.
Claim 4
Dependent Claim
38 words
A phase change heat storage light and temperature control building panel according to claim 1 wherein said salt mixture comprises about 70% CaCl 2 .6H 2 O, about 30% CaBr 2 .6H 2 O and a neucleating agent.
Claim 5
Dependent Claim
32 words
A phase change heat storage, light and temperature control building panel according to claim 1, wherein said housing is divided into a plurality of separate sealed compartments each filled with said material.
Claim 6
Independent Claim
163 words
A method of day light and temperature control and night temperature control of an enclosure in which plants are cultivated comprising providing a panel as at least part of said enclosing surface whereby said panel serves as a window for visible light when said phase-change heat-storage material is in solid and in liquid phase, limits heat penetration by absorbing heat while melting and reduces heat loss from enclosure by releasing heat while solidifying, said panel comprising a sealed housing having at least two walls transparent to visible light delimiting at least one intermediate space filled with a liquid-solid phase-change heat-storage material wherein said material is a salt mixture comprising from about 10-90% CaBr 2 .6H 2 O, about 90-10% CaCl 2 .6H 2 O and a neucleating agent, said material being substantially transparent to visible light in solid and in liquid phase, absorbs heat while melting, releases heat while solidifying and undergoes phase change at a temperature range of from about 5°-28° C.
Claim 7
Independent Claim
163 words
A method of day light and temperature control and night temperature control of an enclosure in which plants are cultivated comprising providing a panel as at least part of said enclosing surface whereby said panel serves as a window for visible light when said phase-change heat-storage material is in solid and in liquid phase, limits heat penetration by absorbing heat while melting and reduces heat loss from enclosure by releasing heat while solidifying, said panel comprising a sealed housing having at least two walls transparent to visible light delimiting at least one intermediate space filled with a liquid-solid phase-change heat-storage material wherein said material is a salt mixture comprising from about 10-90% CaBr 2 .6H 2 O, about 90-10% CaCl 2 .6H 2 O and a neucleating agent, said material being substantially transparent to visible light in solid and in liquid phase, absorbs heat while melting, releases heat while solidifying and undergoes phase change at a temperature range of from about 5°-28° C.
Claim 8
Independent Claim
163 words
A method of day and night light and temperature control of a dwelling unit and other structures comprising providing a panel as at least part of the outer enclosure thereof whereby said panel serves as a window for visible light when said phase-change heat storage material is in solid and in liquid phase, limits heat penetration by adsorbing heat while melting and reduces heat loss from said enclosure by releasing heat while solidifying, said panel comprising a sealed housing having at least two walls transparent to visible light delimiting at least one intermediate space filled with a liquid-solid phase-change heat-storage material wherein said material is a salt mixture comprising from about 10-90% CaBr 2 .6H 2 O, about 90-10% CaCl 2 .6H 2 O and a neucleating agent, said material being substantially transparent to visible light in solid and in liquid phase, adsorbs heat while melting, releases heat while solidifying and undergoes phase change at a temperature range of from about 5°-28° C.
Claim 9
Independent Claim
163 words
A method of day and night light and temperature control of a dwelling unit and other structures comprising providing a panel as at least part of the outer enclosure thereof whereby said panel serves as a window for visible light when said phase-change heat storage material is in solid and in liquid phase, limits heat penetration by adsorbing heat while melting and reduces heat loss from said enclosure by releasing heat while solidifying, said panel comprising a sealed housing having at least two walls transparent to visible light delimiting at least one intermediate space filled with a liquid-solid phase-change heat-storage material wherein said material is a salt mixture comprising from about 10-90% CaBr 2 .6H 2 O, about 90-10% CaCl 2 .6H 2 O and a neucleating agent, said material being substantially transparent to visible light in solid and in liquid phase, adsorbs heat while melting, releases heat while solidifying and undergoes phase change at a temperature range of from about 5°-28° C.
Claim 10
Dependent Claim
37 words
A method of day light and temperature control and night temperature of a dwelling unit and other structures according to claim 6, wherein said panel is installed as a roof skylight of said dwelling and other structures.
Claim 11
Dependent Claim
31 words
A method of day light and temperature control and night temperature control of a dwelling unit according to claim 6 wherein said panel is installed as a window of said dwelling.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |