An experimental investigation has been performed to study the thermal, effective and exergetic performances of a double flow packed bed solar air heater having wire mesh as porous packing in its upper duct. The experiment is encompassed with the variables like packing bed height, mass flow rate of air and the solar radiation intensity. Experimental data has been collected for specified range of system and operating parameters to calculate the temperature rise parameter, thermal efficiency, effective efficiency, entropy generation and exergetic efficiency and to study the effects of system and operating parameters. Also, comparisons of packed bed solar air heater with that of smooth solar air heater of the conventional type have been presented. The results of experimental analysis on the performance of double flow packed bed solar air heater with wire mesh packing in the upper duct can be useful in designing such solar air heaters.
packed bed, energy analysis, temperature rise, effective efficiency, exergy analysis
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