Thermal and Thermo-hydraulic Performance of Packed Bed Solar Air Heater
DOI:
https://doi.org/10.52151/jae2014511.1544Keywords:
Packed bed solar air heater, conventional solar air heater, thermal efficiency, effective efficiencyAbstract
Modification of flow passage of air in a solar air heater using a packing material is one of available techniques to considerably improve thermal performance of solar air heaters. In an outdoor experimental study, thermal and thermohydraulic performance of a packed bed solar air heater were evaluated and compared with that of a conventional solar air heater. It was observed that due to presence of mild steel chips in the flow passage of air in packed bed solar air heater, its thermal efficiency improved considerably as compared to that of conventional solar air heater for the entire range of Reynolds number considered in the investigation. Thermo-hydraulic performance of packed bed solar air heater was found to be better than that of conventional solar air heater for most of the Reynolds number range considered. However, beyond Reynolds number of 15000, conventional solar air heater outperformed packed bed solar air heater in terms of effective efficiency.
References
Chiou JP; El-Wakil MM. 1966. Heat transfer and flow characteristics of porous matrices with radiations as heat source. J. Heat Transfer, 88, 69–76.
Choudhury C; Andersen SL; Rekstad J. 1988. A solar air heater for low temperature applications. Sol. Energy, 40, 335-343.
Cortes A; Piacentini R. 1990. Improvement of the efficiency of a bare solar collector by means of turbulence promoters. Appl. Energy, 36, 253-261.
Dhaliwal SS; Singh S; Singh PP. 2007. Comparative performance evaluation of solar air heaters. Int. Congress on Renewable Energy, 113-117.
Dhiman P; Thakur NS; Chauhan SR. 2012. Thermal and thermo-hydraulic performance of counter and parallel flow packed bed solar air heaters. Renewable Energy, 46, 259-268.
Duffie JA; Beckman WA. 1991. Solar Engineering of Thermal processes. John Wiley and sons, Inc. Publication, New York.
Hahne IE. 1985. Parameter effects on design and performance of flat plate solar collectors. Sol. Energy, 34(6), 497-504.
Gupta C L; Garg HP. 1966. Performance studies on solar air heaters. Sol. Energy, 11, 25-31.
Hamid YH; Beckman WA. 1971. Performance of aircooled radiatively heated screen matrices. J. Eng. Power, 93, 221–224.
Helmbold W. 1984. Independent house heating in temperate climate. Proceeding of International Workshop on Energy Conservation in Buildings, CBRI, Roorkee, 33-40.
Issacci F; Zvirin Y; Grossman G. 1988. Heat transfer analysis of a finned solar air heater. ASME J. Sol. Energy Eng., 110, 145-155.
Kays WM; London AL. 1964. Compact Heat Exchangers. McGraw-Hill, New York.
Lalji MK; Savriya R M; Bhagoria JL. 2012. Exergy evaluation of a packed bed solar air heater. Renewable Sustainable Energy Rev., 16, 6262-6267.
Liu YD; Diaz LA; Suryanarayana NV. 1984. Heat transfer enhancement in air heating flat plate solar collectors. ASME J. Sol. Energy Eng., 106, 358-363.
Mittal MK; Varshney L. 2006. Optimal thermo-hydraulic performance of a wire mesh packed bed solar air heater. Sol. Energy, 80, 1112–1120.
Öztürk H.H. and Demirel Y., Exergy-based performance analysis of packed bed solar air heaters, Int. J. Energy Res. 28, pp. 423–432.
Pottler K; Sippel CM; Beck A; Fricke J. 1999.Optimized finned absorber geometries for solar air heating collectors. Sol. Energy, 67, 35-52.
Satcunanathan S; Deonarine S. 1973. A two pass solar air heater. Sol. Energy, 15, 41- 49.
Wijeysundera N E; Ah LE; Tjioe LE. 1982. Thermal performance study of two pass solar air heaters. Sol. Energy, 28, 363-370.
Yeh HM; Ho CD; Hou JZ. 2002. Collector efficiency of double flow solar air heaters with fins attached. Energy, 27, 715-727.
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