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Design and optimization of a solar air heater with offset strip fin absorber plate

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  • Yang, Ming
  • Yang, Xudong
  • Li, Xing
  • Wang, Zhifeng
  • Wang, Pengsu

Abstract

Solar air heaters are becoming more and more popular in space heating and industrial processes due to their cost effectiveness and easy maintenance. However, how to increase thermal efficiency of solar air heaters becomes a major challenge. In this paper, the design of a solar air heater with offset strip fins was optimized by numerical modeling. Then, a series of experiments based on ASHRAE Standard 93-2003 was conducted to test the detailed thermal performance of the heater in the light of time constant, thermal efficiency, incident angle modifier and the synthetical resistance coefficient. Results indicate that the instantaneous thermal efficiency exceeded 0.40 even when the heater was running at low airflow rate (100m3h−1) under the typical space heating application where the solar irradiance on the collecting area was 600Wm−2, indoor air temperature 14°C, outdoor air temperature −5°C, and solar incidence angle 20°. Such a design would only require fan power of approximately 20W. The work would be useful for developing energy efficient and cost effective solar air heaters.

Suggested Citation

  • Yang, Ming & Yang, Xudong & Li, Xing & Wang, Zhifeng & Wang, Pengsu, 2014. "Design and optimization of a solar air heater with offset strip fin absorber plate," Applied Energy, Elsevier, vol. 113(C), pages 1349-1362.
    • Handle: RePEc:eee:appene:v:113:y:2014:i:c:p:1349-1362
    DOI: 10.1016/j.apenergy.2013.08.091
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    References listed on IDEAS

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    9. Evangelisti, Luca & De Lieto Vollaro, Roberto & Asdrubali, Francesco, 2019. "Latest advances on solar thermal collectors: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 114(C), pages 1-1.
    10. Hassan, Hamdy & Abo-Elfadl, Saleh & El-Dosoky, M.F., 2020. "An experimental investigation of the performance of new design of solar air heater (tubular)," Renewable Energy, Elsevier, vol. 151(C), pages 1055-1066.
    11. Hwi-Ung Choi & Kwang-Am Moon & Seong-Bhin Kim & Kwang-Hwan Choi, 2023. "CFD Analysis of the Heat Transfer and Fluid Flow Characteristics Using the Rectangular Rib Attached to the Fin Surface in a Solar Air Heater," Sustainability, MDPI, vol. 15(6), pages 1-18, March.
    12. Nidhul, Kottayat & Kumar, Sachin & Yadav, Ajay Kumar & Anish, S., 2020. "Enhanced thermo-hydraulic performance in a V-ribbed triangular duct solar air heater: CFD and exergy analysis," Energy, Elsevier, vol. 200(C).
    13. Debnath, Suman & Das, Biplab & Randive, P.R. & Pandey, K.M., 2018. "Performance analysis of solar air collector in the climatic condition of North Eastern India," Energy, Elsevier, vol. 165(PB), pages 281-298.
    14. Jamal-Abad, Milad Tajik & Saedodin, Seyfolah & Aminy, Mohammad, 2016. "Heat transfer in concentrated solar air-heaters filled with a porous medium with radiation effects: A perturbation solution," Renewable Energy, Elsevier, vol. 91(C), pages 147-154.
    15. Rajaseenivasan, T. & Shanmugam, R.K. & Hareesh, V.M. & Srithar, K., 2016. "Combined probation of bubble column humidification dehumidification desalination system using solar collectors," Energy, Elsevier, vol. 116(P1), pages 459-469.
    16. Rajaseenivasan, T. & Srinivasan, S. & Srithar, K., 2015. "Comprehensive study on solar air heater with circular and V-type turbulators attached on absorber plate," Energy, Elsevier, vol. 88(C), pages 863-873.

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