Patent US729896A successfully refreshed from Google Patents.
US4153047A
Expired / Lapsed
US
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Heat storage systems
Assignee: Individual
•
Filing: 1977-07-13
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Granted: 1979-05-08
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Expires: 1997-07-13
Abstract
Abstract The present invention provides systems for transfer of heat such as useful in solar energy systems. A heat storage medium is used, preferably salt conditioned by anti-caking anti-corrosive treatment whereby hydrated salts have increased utility by remaining granular during severe temperature and humidity changes, permitting the salt to be used more effectively as a heat storage and exchange medium. The heat storage medium is coated with a heat transfer liquid preferably silicone oil which functions to preserve salt, prevent rust and corrosion therefrom, and to serve as an efficient heat transfer medium between the heat storage medium and transfer means such as heat coils. A solar heat system comprises a solar energy concentrator, a heat input system to a granular particle storage medium, and a heat output system extracting heat from the storage medium.
Inventors
- 👤 Robert F. Dumbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:34
CPC Classifications
F; F28; F28D; F28D20/00; F28D20/0056; Y; Y02; Y02E; Y02E60/00; Y02E60/14; Y02E70/00; Y02E70/30
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
87 words
A heat storage system comprising in combination, a body of granular heat storage particles in adjacent contact with each other adapted to receive and store heat, a wetting agent covering the particles with an adhering liquid coating uniformly covering all exposed surfaces with a film that does not drain off, and heat transfer means in thermal contact with said wetting agent thereby transferring heat from said storage particles through thermal exchange by contact through said wetting agent to substantially the entire interfacing surface areas of the particles.
Claim 2
Dependent Claim
87 words
A heat storage system comprising in combination, a body of granular heat storage particles in adjacent contact with each other adapted to receive and store heat, a wetting agent covering the particles with an adhering liquid coating uniformly covering all exposed surfaces with a film that does not drain off, and heat transfer means in thermal contact with said wetting agent thereby transferring heat from said storage particles through thermal exchange by contact through said wetting agent to substantially the entire interfacing surface areas of the particles.
Claim 3
Dependent Claim
12 words
A system as defined in claim 1, wherein the particles are salt.
Claim 4
Dependent Claim
14 words
A system as defined in claim 1, wherein the wetting agent comprises silicone oil.
Claim 5
Dependent Claim
15 words
The system defined in claim 1, wherein the particles are stored in a closed container.
Claim 6
Dependent Claim
51 words
The system defined in claim 4, wherein the particles are salt, the container is a steel tank and said wetting agent is silicone oil whereby corrosion of the steel tank by salt reaction is eliminated by a surface film of the wetting agent on the inside surface of the steel tank.
Claim 7
Dependent Claim
22 words
The system defined in claim 1, where the means transferring heat comprises piping circulating a liquid heat transfer agent into the body.
Claim 8
Dependent Claim
31 words
The system defined in claim 6, wherein the liquid heat transfer agent comprises unpressurized silicone whereby temperatures of greater than 100° C. are attainable without change of liquid or piping pressure.
Claim 9
Dependent Claim
34 words
The system defined in claim 6 including means heating the heat transfer agent and means disposing the piping below the body to enhance thermal circulation of the liquid in the piping through said body.
Claim 10
Dependent Claim
17 words
The system defined in claim 6 including means heating the liquid transfer agent substantially above 100° C.
Claim 11
Independent Claim
100 words
The method of retaining a body of granular particles over long periods of time in a consistent uniform physical relationship without packing, corrosion or deterioration in a heat exchange relationship comprising the steps of, storing the particles in contact with each other in a container, covering the particles with an adhering liquid coating that uniformly covers all exposed surfaces with a film that does not drain off and thermally exchanging heat stored in said particles by passing a heat transfer medium through the particles to exchange temperature therewith by thermal contact with all the particle surfaces through said liquid coating.
Claim 12
Independent Claim
100 words
The method of retaining a body of granular particles over long periods of time in a consistent uniform physical relationship without packing, corrosion or deterioration in a heat exchange relationship comprising the steps of, storing the particles in contact with each other in a container, covering the particles with an adhering liquid coating that uniformly covers all exposed surfaces with a film that does not drain off and thermally exchanging heat stored in said particles by passing a heat transfer medium through the particles to exchange temperature therewith by thermal contact with all the particle surfaces through said liquid coating.
Claim 13
Dependent Claim
10 words
The method of claim 10, wherein the container is closed.
Claim 14
Dependent Claim
11 words
The method of claim 10, wherein the coating comprises silicone oil.
Claim 15
Dependent Claim
37 words
The method defined in claim 12, wherein the particles are coated by placing in a container and placing into the container a quantity of silicone oil in the order of 1% of the volume of the container.
Claim 16
Dependent Claim
25 words
The method of claim 10 including the step of storing the coated particles in contact with each other in the presence of humid ambient air.
Claim 17
Dependent Claim
10 words
The method of claim 10, wherein the particles are salt.
Claim 18
Dependent Claim
11 words
The method of claim 15, wherein the salt particles are hydrated.
Claim 19
Dependent Claim
12 words
The method of claim 15, wherein the salt particles are sodium chloride.
Claim 20
Dependent Claim
12 words
The method of claim 15, wherein the salt particles are Glauber's salt.
Claim 21
Dependent Claim
13 words
The method of claim 15, wherein the salt particles are in steel containers.
Claim 22
Dependent Claim
25 words
The method of claim 15, wherein the salt is transported from one location at a predetermined temperature to a second location of a different temperature.
Claim 23
Dependent Claim
12 words
The method of claim 20, wherein the container is the transportation means.
Claim 24
Dependent Claim
14 words
The method defined in claim 10, wherein the heat transfer medium comprises silicone oil.
Claim 25
Dependent Claim
36 words
The method defined in claim 10, wherein the medium is passed through coils immersed in the particles, and wherein said film wets the particles to efficiently transfer heat between the particles and the heat transfer medium.
Claim 26
Dependent Claim
20 words
The method defined in claim 22 including the step of heating the transfer medium to a temperature exceeding 100° C.
Claim 27
Dependent Claim
54 words
The method defined in claim 10 including the step of circulating the heat transfer medium through piping into thermal contact with said particles, heating the heat transfer medium above the temperature of the particles and locating the particles above the heating location to enhance thermal circulation of said heat transfer medium in said piping.
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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) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |