The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 25, 1977
Filed:
Jun. 30, 1975
Richard A Nathan, Columbus, OH (US);
Robert E Schwerzel, Columbus, OH (US);
Albert H Adelman, Columbus, OH (US);
Robert E Wyant, Delaware, OH (US);
Battelle Development Corporation, Columbus, OH (US);
Abstract
A process for photochemical collection, storage, and retrieval of solar energy, including solar energy in the visible and near-infrared light spectrum, comprising: exposing to solar radiation of a trans-isomer of particular geometrically isomerizable compounds, while dissolved in a predominantly (greater than 50 percent by volume) aqueous liquid medium, to isomerize the trans-isomer to a thermodynamically less stable, but kinetically stable, cis-isomer of higher energy content, heating the produced cis-isomer to an activation temperature triggering exothermal conversion (or return) of the cis-isomer to the trans-isomer with release of thermal energy; and continuing exothermal conversion of cis-isomer to trans-isomer through use of a portion of the exothermically released thermal energy and transferring of another portion of the released thermal energy from the region of exothermal conversion for availability of this other portion for useful thermal energy applications; with the therein employed geometrical isomerizable compound being possessed of defined properties including the properties of both the trans-isomer and cis-isomer having light absorbance maxima lying between the wavelengths of 350 and 800 nm with the absorbance maxima of the cis-isomer occuring at a shorter wavelength than the absorbance maxima of the trans-isomer, and being selected from compounds having these defined properties and certain structural formulae.