Yeh, Ho-Ming; Ho, Chii-Dong; Hou, Jun-Ze - In: Energy 24 (1999) 10, pp. 857-871
The performance of double-flow type solar air heaters, in which air is flowing simultaneously over and under the absorbing plate, is more effective than that of the devices with only one flow channel over or under the absorbing plate because the heat-transfer area in double-flow systems is...