Upward-type flat-plate solar air heaters attached with fins and operated by an internal recycling for improved performance
學年 100
學期 2
出版（發表）日期 2012-03-11
作品名稱 Upward-type flat-plate solar air heaters attached with fins and operated by an internal recycling for improved performance
作品名稱（其他語言）
著者 Yeh, Ho-Ming
單位 淡江大學化學工程與材料工程學系
出版者 Amsterdam: Elsevier BV
著錄名稱、卷期、頁數 Journal of the Taiwan Institute of Chemical Engineers 43(2), pp.235-240
摘要 The effect of internal recycle on the collector efficiency in upward-type flat-plate solar air heaters attached with fins has been investigated theoretically. The equations for predicting the outlet air temperature and the collector efficiency were derived from the energy balances on the absorbing plate and flow air. Considerable improvement in collector efficiency is obtainable if collector is attached with fins to extend the heat-transfer area, and if the operation is carried out with an internal recycle to increase the fluid velocity, leading to improved heat transfer coefficient. The enhancement in collector efficiency increases with increasing reflux ratio, especially for operating at lower air flow rate with higher inlet air temperature. It is found that more than 100% of improvement in collector efficiency is obtained by recycling operation. Furthermore, the performance in the device operated with internal recycle overcomes that in the same-size device operated with external recycle.
關鍵字 Solar air heater;Upward type;Flat-plate;Collector efficiency;Internal recycle;Attached fins
語言 en
ISSN 1876-1070
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Yeh, Ho-Ming
審稿制度 否
國別 NLD
公開徵稿
出版型式 紙本
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