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PERFORMANCE EVALUATION OF A SOLAR WATER HEATER INTEGRATED WITH BUILT-IN THERMAL ENERGY STORAGE VIA POROUS MEDIA

Hasan S. Majdi, Azher M. Abed, Laith J. Habeeb
Frontiers in Heat and Mass Transfer (FHMT) 17 - 6 (2021)


Abstract


This paper presents an experimental investigation of the thermal performance of a solar latent heat storage unit from outdoor experimental measurements of a evacuated solar collector integrated with built-in porous media in thermal energy storage. The tank consists of a porous media part, a packed of glass beds, and the fluid flowing through the void space surrounding the porous glass beds. The porous tanks were filled by 1.68 mm glass beds to form bed heights of 10 and 20 cm.  Results show that the maximum thermal storage (110 min) is achieved in qh=4 LPM, qc=5 LPM and h=20 cm, while the same flow rates of the case of absence porous media gives 90 min of thermal storage time. The same enhancement was achieved in case of  qh=2 LPM, qc=2 LPM and 20 cm bed height during heating process due to heat transfer resistance by mean of porous media. 


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DOI: http://dx.doi.org/10.5098/hmt.17.6

ISSN: 2151-8629