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Thermal Performance Evaluation of Arc Rib Having Symmetrical Wide Gaps and Staggered Elements and Additional Narrow Gap in Each Arc Segment Used in Absorber Surface of Solar Air Heater

  • DIRECT CONVERSION OF SOLAR ENERGY INTO ELECTRICAL ENERGY
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Abstract

The study is aimed to assess the thermohydraulic performance of solar air heater duct with arc rib of symmetrical wide gaps and staggered element and one additional gap in each arc segment. The parameters included in study are number of gaps, number of additional gaps, width of wide gap, width of additional narrow gap, position of additional gap, staggered rib size, staggered pitch, arc pitch and arc angle. Arc pitch ratio taken for study is 8, 10, 12 and 14 for Reynolds number range 3000–14000 with rib size of 2 mm. The dimension of duct is 1500 × 200 × 25 mm3. The highest increase in Nusselt number and friction coefficient is noted as 3.31- and 3.52-times smooth duct and highest THP computed is 2.32.

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Authors and Affiliations

  1. Maulana Azad National Institute of Technology, Bhopal, India

    Sanjeev Kumar Yadav

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  1. Sanjeev Kumar Yadav
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Correspondence to Sanjeev Kumar Yadav.

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Sanjeev Kumar Yadav Thermal Performance Evaluation of Arc Rib Having Symmetrical Wide Gaps and Staggered Elements and Additional Narrow Gap in Each Arc Segment Used in Absorber Surface of Solar Air Heater. Appl. Sol. Energy 57, 192–197 (2021). https://doi.org/10.3103/S0003701X21030105

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  • DOI: https://doi.org/10.3103/S0003701X21030105

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