出版日期：2009-05-01 00:00:00

著者：Yeh, Ho-ming; Ho, Chii-dong

單位：淡江大學化學工程與材料工程學系

出版者：Elsevier

著錄名稱、卷期、頁數：Renewable Energy 34(5), pp.1340-1347

摘要：The influence of external recycle on the collector efficiency in solar air heaters with internal fins attached, has been investigated theoretically. The application of external recycle operation to solar air heaters actually has two conflict effects. One is the increase in fluid velocity to decrease the heat-transfer resistance, which is good for performance, while the other is lowering the driving force (temperature difference) of heat-transfer, due to the remixing at the inlet, which is bad for performance. It is found that considerable improvement in collector efficiency is obtainable if the operation is carried out with an external recycle, where the desirable effect overcomes the undesirable effect. The enhancement increases with increasing reflux ratio, especially for operating at lower air flow rate with higher inlet air temperature.

關鍵字：Solar air heater;Internal fin;Collector efficiency;External recycle

語言：en

ISSN：0960-1481 1879-0682

期刊性質：國外

收錄於：SCI EI

通訊作者：Ho, Chii-dong

審稿制度：否

國別：GBR

出版型式：電子版,紙本