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Theoretical investigation of height and width tapered microchannel cooling systems for ultra-high concentrator photovoltaic thermal hybrids

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  • Cameron, William J.
  • Shanks, Katie
  • Mallick, Tapas K.
  • Reddy, K. Srinivas

Abstract

This paper explores the utilisation of horizontally and vertically converging microchannel heat sinks for cooling concentrator photovoltaic systems. These are compared to a straight microchannel, which is used as the control test. The primary performance parameters considered are the system's energy and exergetic efficiency and the thermal stresses generated in the solar cell. Horizontally converging channels yield more uniform temperature distributions, but the peak and average thermal stress generation increased due to the higher cell temperature. Conversely, vertically converging channels demonstrated a reduction in thermal stress generation. However, channels which converge more sharply require a substantial increase in pumping power for the same cooling-fluid flow rate which negatively impacts energy and exergetic efficiency. Notably, the control design for straight microchannels is specified to have the same manufacture difficulty across configurations, which is an often-overlooked aspect.

Suggested Citation

  • Cameron, William J. & Shanks, Katie & Mallick, Tapas K. & Reddy, K. Srinivas, 2024. "Theoretical investigation of height and width tapered microchannel cooling systems for ultra-high concentrator photovoltaic thermal hybrids," Renewable Energy, Elsevier, vol. 234(C).
    • Handle: RePEc:eee:renene:v:234:y:2024:i:c:s096014812401276x
    DOI: 10.1016/j.renene.2024.121208
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    References listed on IDEAS

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