Reversible hydride thermal energy storage cell optimized for solar applications

a technology of solar energy storage and hydride, which is applied in the direction of machines/engines, lighting and heating apparatus, and greenhouse gas reduction, etc., can solve the problem that the energy density of the salt mixture requires significant quantities of salts, and achieves the effect of low cost and competitive electrical production facilities for both small and very large scale applications

Inactive Publication Date: 2011-05-05
BLIESNER WAYNE THOMAS
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The advantage of this system is that it is a completely reversible closed cycle. The intermittent sunlight can be chemically stored and released at a controlled rate for ele

Problems solved by technology

The energy density of the salt mixture requires significant quantities of sa

Method used

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  • Reversible hydride thermal energy storage cell optimized for solar applications
  • Reversible hydride thermal energy storage cell optimized for solar applications
  • Reversible hydride thermal energy storage cell optimized for solar applications

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Embodiment Construction

The storage system consists of three tank systems: The first is the calcium and calcium hydride storage cell (1) with reaction chamber. The second is the hydrogen storage tanks (2) using a low temperature titanium iron hydride material. The third tank provides thermal storage used for extracting the energy from the hydrogen prior to the hydrogen being stored in the low temperature hydride tanks (2). A single thermo-cline tank is used to store the hydrogen energy as it cools from 2000 F to near room temperature. This embodiment uses a high temperature double tank (17) to cool the hydrogen from 2000 F to 100 F. This thermal storage tank combination is also used to heat the hydrogen prior to it entering the calcium cell (1).

FIG. 1 shows an embodiment of a three tank system. The calcium / calcium hydride tank (1) consists of an outer tank (3a), a mid tank (3b), and inner tank (4) with an insulation layer (6) between the three tanks. The inner tank (4) is maintained at temperatures of 1500...

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Abstract

A solar energy collection and storage system and a method of collecting and storing solar energy. The system includes a device for focusing solar energy onto a reaction chamber for the conversion of metal hydride to liquid metal and hydrogen, a metal/metal hydride chamber containing a metal/metal hydride mixture, a hydrogen storage system using hydrides and a thermo-cline for recovering the thermal energy from the hydrogen when it is cooled from 2000 F to ambient conditions for storage.

Description

FIELD OF INVENTIONThis invention relates to a solar energy collection and storage system and more particularly to a solar energy collection and storage system which converts solar energy into thermal energy storing the energy in the heat of formation of calcium hydride.BACKGROUNDSolar energy provides a thermal power source which can supply a significant fraction of the world energy needs. A complete system which can absorb the sunlight during the day and produce continuous electricity provides a benefit to the society. Large scale solar power production, in GWatt quantities, is the focus of this patent. A power tower concept provides a solution where a central receiver absorbs sunlight from a field of mirrors focused on the tower. The Barstow facility, Solar 1 and 2, provides an example of this type of facility. For extended operation a thermal storage medium of potassium nitrate / sodium nitrate salts allow several hours of extended run time beyond the daylight hours. These systems u...

Claims

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Application Information

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IPC IPC(8): F24J2/34
CPCF28D20/003Y02E60/142Y02E10/46F03G6/068Y02E70/30Y02E60/14
Inventor BLIESNER, WAYNE THOMAS
Owner BLIESNER WAYNE THOMAS
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