Patent ID: 6637427
Filing Date: 2003-10-28
Classification: F24S,F28D,Y02E

Abstract:
A solar energy absorber tube assembly for receiving concentrated solar energy comprising an outer tubular member, said tubular member having an outer surface arranged to be exposed in use to concentrated radiant solar energy, said outer surface being provided with a plurality of grooves, said grooves being of substantially V-shaped configuration in cross section, a first inner tubular member arranged coaxially within said outer tubular member and defining therewith an annular space, a helically extending separator within said annular space and defining a helical flow passage extending along said absorber tube assembly for the passage of water and/or stream, an outlet at one end of said absorber tube assembly communicating with said annular space for outlet flow of water and/or stream from aid helical flow passage, and a second inner tubular member arranged coaxially within and spaced from said first inner tubular member, said second inner tubular member communicating with said annular space at the other end of said absorber tube assembly, said second inner tubular member defining an inlet for the flow of water and/or steam to said helical flow passage for flow therethrough to said outlet.