 Stove having extruded door opening and method of making same |
| Therefore, having specifically described our invention, we claim: 1. Door and door opening ... |
|
| Combined day and night solar energy system |
| It is an object of the present invention to provide an improved system for combined day and night ... |
|
| Determining the coefficient of performance of a refrigeration system |
| What is claimed: 1. A method for reducing the coefficient of performance to a design value from ... |
|
| Solar water heater |
| What is claimed is: 1. A hot water heating apparatus for heating and storing hot water using solar ... |
|
| Heat exchanger and fan motor in a front wheel drive vehicle |
| The foregoing and the other object of the present invention have been attained by providing a heat ... |
|
| Passive solar energy water preheat system using non-freezing heat transport mediums |
| OF THE PREFERRED EMBODIMENT Referring to the drawings, and to FIG. 1 in particular, there is shown ... |
|
| Closed loop solar collector system with dual reservoirs and fluid bypass |
| I claim: 1. A closed loop solar collector system comprising: a fluid receiver for collecting solar ... |
|
| Compound solar collector building construction |
| It has now been found that certain of the foregoing and related objects of the invention are ... |
|
| Phase change insulation system |
| OF THE PREFERRED EMBODIMENT Referring now in more detail to the drawings in which like numerals ... |
|
| Thermal insulation/thermal collector assembly |
| 1. Purposes of the Invention It is an object of the present invention to improve an integrated ... |
|
|
High-temperature direct-contact thermal energy storage using phase-change media
| Details |
Inventors: Claar, Terry D.; Petri, Randy J.;
Assignee: Institute of Gas Technology (Chicago, IL)
Primary Examiner: Albrecht; Dennis L.
Assistant Examiner:
Attorney, Agent or Firm: Speckman; Thomas W.
A high-temperature direct-contact thermal energy storage element for use in a system for storage and retrieval of thermal energy in the range of about 400.degree. to about 2000.degree. F. The thermal energy is directly stored, without heat exchange tubes in composite latent/sensible heat thermal energy storage media utilizing the heat of fusion and high-temperature stability of alkaline metal and alkaline earth carbonates, chlorides, nitrates, nitrites, fluorides, hydroxides, sulfates, and mixtures thereof maintained within a porous support-structure material which itself is capable of storage as sensible heat. The thermal energy storage according to the invention may be effectively utilized for storage of thermal energy derived from solar, industrial waste, process heat, and high-temperature gas reactor energy sources and retrieved for a wide variety of uses such as combustion air preheating, drying, space heating, heating of process gases, and the like. |
|
DETAILED DESCRIPTION We claim: 1.
A high-temperature direct-contact thermal energy storage element for storage of thermal energy at about 400.
degree.
to about 2000.
degree.
F.
comprising: a containment vessel housing about 10 to about 90 volume percent solid-liquid phase-change chemical having a phase change temperature at about 400.
degree.
to about 2000.
degree.
F.
and selected from the group consisting of alkali metal and alkaline earth carbonates, chlorides, nitrates, nitrites, fluorides, hydroxides, sulfates, and mixtures thereof supported within the pores of sensible thermal energy storage-support material through which heat storage and heat retrieval fluid may be circulated selected from the group consisting of metal oxides, aluminates, titanates and zirconates, having sub-micron particle size, the particles of which do not substantially coarsen with thermal cycling at temperatures up to about 2000.
degree.
F.
, and having a surface area greater than about 10 square meters per gram of storage-support material, said storage-support material comprising about 10 to about 90 volume percent of said thermal storage element.
2.
The high-temperature direct-contact thermal energy storage element of claim 1 wherein said solid-liquid phase-change chemical comprises about 50 to 80 volume percent and said storage-support material comprises about 20-50 volume percent.
3.
The high-temperature direct-contact thermal energy storage element of claim 2 wherein said storage-support material comprises porous ceramic storage-support material having particle size about 0.
05 to about 0.
5 microns and a pore surface area about 10 to about 50 square meters per gram of ceramic material.
4.
The high-temperature direct-contact thermal energy storage element of claim 2 wherein said phase-change chemical is selected from the group consisting of sodium carbonate, potassium carbonate, lithium carbonate, magnesium carbonate, calcium carbonate, strontium carbonate, barium carbonate and mixtures thereof.
5.
The high-temperature direct-contact thermal energy storage element of claim 4 wherein said phase-change temperature is about 700
|
| Related patents |
|
|
Device for facilitating the circulation of fluid coolant
OF THE INVENTION The FIGURE illustrates a device 1 according to the invention. Numeral 2 designates a storage and collection tank. For operational purposes, the coolant ...
|
|
|
Solar energy system
I claim: 1. A solar energy system comprising means defining a fluid storage tank and including fluid inlet and outlet conduits communicating with the said tank, a heat ...
|
|
|
Refrigerated filter assembly and method of using same
OF THE DRAWINGS Referring to FIGS. 1 and 2, the apparatus and method of the invention will be described. A saturated liquid, such as LPG, is normally subject to storage ...
|
|
|
N-substituted thio alkyl phenothiazines
OF THE INVENTION The first aspect of the invention is obtaining the phenothiazine compound or phenothiazine derivative utilized to manufacture the compounds of the ...
|
|
|
Catalytic composite particularly useful for the oxidation of mercaptans and the removal of gums contained in a sour petroleum distillate
I claim: 1. A regeneratable, gum resistant catalytic composite for sweetening a sour petroleum distillate, prepared by the method comprising: (a) washing a basic anion ...
|
|
|
Solar energy system
I claim: 1. A new composition of matter comprising Norbornadiene-Quadricyclene having reduced flammability by the addition of a halogenated hydrocarbon. 2. A refrigerant ...
|
|
|
Photogeneration of active formate decomposition catalysts from transition metal complexes containing manganese and the production of hydrogen
What is claimed is: 1. A process for producing hydrogen from formate and water wherein an active formate decomposition catalyst is photogenerated from a transition metal ...
|
|
|
Solar water heating apparatus
We claim: 1. A clip assembly for securing a body to a tile, said clip assembly including first and second portions adapted to be engaged with respective opposite ends of ...
|
|
|
Liquid fabric-softening composition
We claim: 1. A liquid concentrated fabric softening composition having both good fabric softening properties and good dispersability/dispensability comprising: (i) at ...
|
|
|
Bi-level exhaust venting system for an eye level range
In accordance with the present invention, a cooking apparatus is provided having an improved bi-level exhaust venting system. Broadly, there is disclosed herein a ...
|
|
|
Heat Accumulators 
