Performance Improvement of a Double-Pass Solar Air Heater with Fins and Baffles under Recycling Operation
學年 100
學期 1
發表日期 2011-11-02
作品名稱 Performance Improvement of a Double-Pass Solar Air Heater with Fins and Baffles under Recycling Operation
作品名稱（其他語言）
著者 Ho, Chii-dong; Chang, Hsuan; Wang, Rei-chi; Lin, Chun-sheng
作品所屬單位 淡江大學化學工程與材料工程學系
出版者 Feng Chia University
會議名稱 The 11th International Conference on Clean Energy
會議地點 Taichung, Taiwan
摘要 The performance of a solar air heater featured with double-pass as well as fins and baffles design was investigated for the effect of recycling operation via both experimental and theoretical approaches. The experimental results deviate by 1.5–23% from the theoretical predictions. The performance of solar air heaters with different designs are compared, including the single-pass, double-pass with recycle, fined double-pass with recycle, and fined plus baffled double-pass with recycle. The double-pass device introduced in this study was proposed for aiming to strengthen the convective heat transfer coefficient and enlarge the heat transfer area. Based on both theoretical and experimental results, the collector efficiency of the fined plus baffled double-pass with recycle design is much higher than the other designs under different reflux ratios and mass flow rates. The optimal reflux ratio for the fined plus baffled double-pass design is about 0.5 while considering both the collector efficiency and the pumping power requirement. An economic consideration in terms of the heat transfer efficiency and power consumption increment for double-pass operation is delineated.
關鍵字 Heat-transfer efficiency;Double-pass design;Solar air heater;Fins;Baffles
語言 en_US
收錄於
會議性質 國際
校內研討會地點 無
研討會時間 20111102~20111105
通訊作者 Ho, Chii-dong
國別 TWN
公開徵稿
出版型式
出處 Applied Energy-Clean Energy for Future Generations 100, pp.155-163
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