Abstract

The solar water heating systems are the cheapest options to benefit from the solar energy. This paper deals with the assessment of Al2O3 and CuO nanofluids for the optimal operating conditions in a passive solar water heating system, coupled with a small storage tank. For that reason, to provide the highest amount of hot water for consumption at the desired temperature whenever the inhabitants require it, there must be the best connection between the collector and the storage tank. The experimental results present the optimum conditions of controllable variables for the highest output thermal power. Usage of Al2O3 and CuO nanofluid in the collector system, in their optimum operation, increases the power output of the system by 20.6% and 29.5%, respectively.The significance of the present study is underscored by the vital role played by the optimized heat gain of the hot water tank for water heating in residential applications.

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