Abstract

In this study, a wall mounted solar concentrating collector with parabolic and involute mirrors combined with an evacuated glass tube is designed to boost the solar energy collection for domestic hot water supply during winter. To optimize the device, the mirrors' parameters are varied, and the amount of collected energy in each case compared through ray tracing simulation. The results show that with the optimal mirror shape, the amount of collected energy is 5.5 times bigger than when the evacuated glass tube is set alone. This system will be considered sufficiently useful as it can reduce the high cost component of the evacuated glass tubes by replacing them with inexpensive mirrors.

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