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Development of new algebraic derivations to analyze minichannel solar flat plate collectors with small and large size minichannels and performance evaluation study

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  • Vahidinia, F.
  • Khorasanizadeh, H.

Abstract

In this study two new simple methods are extended for thermal performance evaluation of minichannel collectors. The classical fin analysis method is employed for minichannel collectors with small size and small distanced minichannels and the concept of overall heat loss coefficient is utilized for minichannel collectors with any minichannel size and any distance between them. After verification, the new derivations are used to evaluate the performances of minichannel collectors with small and large size minichannels. For every mass flow rate the energy efficiencies of both minichannel collectors are found approximately the same, but much better than that of a conventional collector. For mass flow rate of 0.02 kg/s, the thermal efficiencies of the minichannel collectors compared to that of a conventional collector are 14.22% and 13.83% higher, respectively. Considering higher and identical thermal performances of the minichannel collectors compared with that of the conventional collector and the superiority of hydraulic performance of the minichannel collector with large size minichannels, design and commercialization of minichannel collectors with large size minichannels are recommended. Development of a new general relation for minichannel collector efficiency factor attained in this study paves the way for future research and simple performance evaluation of minichannel collectors.

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  • Vahidinia, F. & Khorasanizadeh, H., 2021. "Development of new algebraic derivations to analyze minichannel solar flat plate collectors with small and large size minichannels and performance evaluation study," Energy, Elsevier, vol. 228(C).
    • Handle: RePEc:eee:energy:v:228:y:2021:i:c:s0360544221008896
    DOI: 10.1016/j.energy.2021.120640
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    References listed on IDEAS

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    1. Pandey, Krishna Murari & Chaurasiya, Rajesh, 2017. "A review on analysis and development of solar flat plate collector," Renewable and Sustainable Energy Reviews, Elsevier, vol. 67(C), pages 641-650.
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    5. Jafarkazemi, Farzad & Ahmadifard, Emad, 2013. "Energetic and exergetic evaluation of flat plate solar collectors," Renewable Energy, Elsevier, vol. 56(C), pages 55-63.
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    Cited by:

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    2. Vahidinia, F. & Khorasanizadeh, H. & Aghaei, A., 2023. "Energy, exergy, economic and environmental evaluations of a finned absorber tube parabolic trough collector utilizing hybrid and mono nanofluids and comparison," Renewable Energy, Elsevier, vol. 205(C), pages 185-199.
    3. Shantia, Alireza & Streicher, Wolfgang & Bales, Chris, 2022. "Effect of tapered headers on pressure drop and flow distribution in a U-type polymeric solar absorber," Renewable Energy, Elsevier, vol. 192(C), pages 550-560.
    4. Ma, Ruihua & Ma, Dongyan & Ma, Ruijiang & Long, Enshen, 2022. "Theoretical and experimental analysis of temperature variation of V–Ti black ceramic solar collector," Renewable Energy, Elsevier, vol. 194(C), pages 1153-1162.
    5. More, Supriya S. & Sagade, Atul A. & Ravindranath, G. & More, Sagar & More, Santosh, 2023. "Innovative mini-channel design for a compound parabolic solar thermal collector serving intermediate temperature applications," Energy, Elsevier, vol. 283(C).

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