Double-exposure collector system for solar heating applications

摘要: A retrofit solar water-heating system has been installed in a three-story apartment building at Drexel University. The employs two conventional collector banks mounted the latitude angle for Philadelphia of 40/sup 0/ from horizontal and double-exposure collectors (DEC's) vertically mirrored enclosures. Although DEC units are being used year-round domestic water heating building, they designed to provide maximum output winter therefore well-suited space applications. performance relative calculated.