Efficiency of Recycling Double-Pass V-Corrugated Solar Air Collectors
AbstractThe influence of recycling on double-pass solar air collectors with welding of the V-corrugated absorber has been studied experimentally and theoretically. Welding the V-corrugated absorber and the recycle-effect concept to the solar air collector was proposed to strengthen the convective heat-transfer coefficient due to turbulence promotion. Both the recycle effect and the V-corrugated absorber can effectively enhance the heat transfer efficiency compared to various designs such as single-pass, flat-plate double-pass, and double-pass wire mesh packed devices. Recycling operations and welding the V-corrugated absorber could enhance the collector efficiency by increasing the recycle ratio, incident solar radiations, and air mass flow rates. The most efficient and economical operating conditions were found at R ≈ 0.5, with relatively small hydraulic dissipated energy compensation. It was found that the turbulence intensity increase from welding the V-corrugated absorber into the solar air collector channel could compensate for the power consumption increase, when considering economic feasibility. View Full-Text
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Ho, C.-D.; Hsiao, C.-F.; Chang, H.; Tien, Y.-E.; Hong, Z.-S. Efficiency of Recycling Double-Pass V-Corrugated Solar Air Collectors. Energies 2017, 10, 875.
Ho C-D, Hsiao C-F, Chang H, Tien Y-E, Hong Z-S. Efficiency of Recycling Double-Pass V-Corrugated Solar Air Collectors. Energies. 2017; 10(7):875.Chicago/Turabian Style
Ho, Chii-Dong; Hsiao, Ching-Fang; Chang, Hsuan; Tien, Yi-En; Hong, Zih-Syuan. 2017. "Efficiency of Recycling Double-Pass V-Corrugated Solar Air Collectors." Energies 10, no. 7: 875.
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