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    题名: Device Performance Improvement of Recycling Double-Pass Cross-Corrugated Solar Air Collectors
    作者: Chii-Dong Ho;Hsuan Chang;Ching-Fang Hsiao;Chien-Chang Huang
    关键词: heat-transfer efficiency;double-pass;solar air heater;recycle;cross-corrugated flow channel
    日期: 2018-02-02
    上传时间: 2018-03-02 12:13:55 (UTC+8)
    出版者: MDPI and ACS Style
    摘要: The device performance of cross-corrugated double-pass solar air heaters under external recycle conditions was investigated experimentally and theoretically, and solved numerically using the Newton method. Comparisons were made and represented graphically among three different configurations of the single-pass, flat-plate double-pass and cross-corrugated double-pass devices. Air flowing simultaneously over the wavelike corrugated absorbing plate and in-between both wavelike cross-corrugated absorbing and transverse bottom plates was conducted under double-pass operations. A considerable heat-transfer efficiency enhancement is obtained employing such a recycling double pass device with welding cross-corrugated absorbing plates, instead of using the flat-plate device. An effective thermal performance was achieved because the heat transfer area is doubled and the turbulent intensity is enhanced as well. The power consumption increment owing to the reduction in the cross-sectional area was taken into account associated with the heat-transfer efficiency enhancement for comparisons in determining the optimal design on an economic consideration for the recycling cross-corrugated double-pass device.
    關聯: Energies 2018 11(2), p.338
    DOI: 10.3390/en11020338
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文

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