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Effect of aspect ratio on the collector efficiency of sheet-and-tube solar water heaters with the consideration of hydraulic dissipated energy

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  • Yeh, H.M.
  • Ho, C.D.
  • Yeh, C.W.

Abstract

With the consideration of hydraulic dissipated energy, the influence of collector aspect ratio on the modified collector efficiency of sheet-and-tube solar water heaters has been investigated theoretically. As the collector area and the distance between tubes is fixed, the collector efficiency increases with increasing collector aspect ratio (i.e., either increasing tube length or decreasing tube number). However, based on the same hydraulic dissipated energy, decreasing the collector aspect ratio enhances the performance.

Suggested Citation

  • Yeh, H.M. & Ho, C.D. & Yeh, C.W., 2003. "Effect of aspect ratio on the collector efficiency of sheet-and-tube solar water heaters with the consideration of hydraulic dissipated energy," Renewable Energy, Elsevier, vol. 28(10), pages 1575-1586.
    • Handle: RePEc:eee:renene:v:28:y:2003:i:10:p:1575-1586
    DOI: 10.1016/S0960-1481(03)00006-5
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    References listed on IDEAS

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    1. Yeh, Ho-ming & Lin, Tong-Tshien, 1995. "The effect of collector aspect ratio on the collector efficiency of flat-plate solar air heaters," Energy, Elsevier, vol. 20(10), pages 1041-1047.
    2. Yeh, Ho-Ming & Lin, Chi-Yen, 1996. "The effect of collector aspect ratio on the collector efficiency of upward-type flat-plate solar air heaters," Energy, Elsevier, vol. 21(10), pages 843-850.
    3. Yeh, Ho-Ming & Ting, Young-Chun, 1988. "Efficiency of solar air heaters packed with iron filings," Energy, Elsevier, vol. 13(7), pages 543-547.
    4. Yeh, Ho-Ming & Ting, Young-Chun, 1986. "Effects of free convection on collector efficiencies of solar air heaters," Applied Energy, Elsevier, vol. 22(2), pages 145-155.
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    Cited by:

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    3. Motamedi, Mahdi & Rafeie, Mehdi & Ebrahimnia Bajestan, Ehsan & Taylor, Robert A., 2021. "Mitigating the losses in nanofluid-based direct solar absorption receivers," Renewable Energy, Elsevier, vol. 178(C), pages 1174-1186.

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