Sodha, M. S.; Seth, S. P.; Bansal, N. K.; Seth, A. K.; … - In: Applied Energy 9 (1981) 1, pp. 1-12
The constant flow ground collector/storage system consists of a network of pipes buried in the ground; the top surface is black ened and covered with a thermal trap. For a 0·05 m thickness of thermal trap and for a 0·14 m depth of the plane of heat retrieval, the collection efficiency of...