Concentrating solar thermal systems - numerical simulation and experimental study for applications at intermediate to medium temperatures

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Date

2023-05

Authors

Παναγόπουλος-Κοντοσταυλάκης, Ορέστης

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Abstract

Concentrating solar thermal systems are widely used to convert solar energy for space heating and refrigeration, solar water heating, as well as industrial process heat. The state-of-the-art methods for solar process heat production use different concepts among which tracking Fresnel mirrors or parabolic troughs. However, very few commercially available devices operating at intermediate to medium temperatures (100−250 °𝐶) exist. In order to fill this gap, an innovative concentrating solar thermal system is proposed and studied. The proposed device is able to concentrate the solar radiation to the receiver using a micro-mirror array and a flat receiver. A prototype is designed, constructed and tested outdoors. The findings of the theoretical study through numerical simulations and the experimental results are presented and discussed in the present work.

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Keywords

Solar thermal systems, Ray-tracing, Thermal simulations, Automatic data acquisition systems

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