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:
Apr. 17, 1979
Filed:
Feb. 23, 1977
Michael C Keeling, Phoenix, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A solar heat collector having reduced convention losses until a predetermined absorber means excess temperature is reached and including a radiant energy absorbing means which has a first and a second surface. Means for the passage of a fluid to be heated is positioned in contact with the second surface of the absorbing means. Means for reducing conduction losses are positioned adjacent to the means for passage thereby sandwiching the means for passage between the absorbing means and the means for reducing. Glazing means which is transparent to radiant energy is positioned over the first surface of the absorbing means and is spaced apart therefrom thereby trapping air between the glazing means and the absorbing means. Means to suppress convection flow of the trapped air until a predetermined absorbing means temperature is reached. The means to suppress convection is located between the glazing means and the absorbing means thereby reducing losses due to convection from the absorbing means. The means to suppress convection losses provides for very high operating efficiencies at all operating temperatures up to a predetermined maximum, at which it ceases to function and the efficiency quickly reaches zero with any additional increase in collector operating temperature.