Thermal optimization of solar dish collector for indirect vapor generation

Abstract

Summary This work presented the performance analysis of a solar parabolic concentrator prototype. The purpose of this paper is to achieve most quantity of vapor production with different water flows. The principal component of the solar concentrator is a new absorber concept that absorbs reflected solar rays and transports it to a heat exchanger in order to generate vapor. Climatic conditions, inlet/outlet oil temperatures of the tubular solar heat exchanger, water tank temperature, and inlet/outlet water temperatures of the mixed heat exchanger were recorded experimentally during three days in November 2018. The absorbed energy, losses energy, concentrated energy, and vapor heat energy of the system were determined. Results of this work, the solar system provides thermal energy efficiency varied from 60% to 70% and a concentration factor around 350 for three water mass flow rates. In this experiment, the optimum value of vapor mass is 6 kg/h with 0.016 kg/s of water flow. Consequently, to achieve the most quantity of vapor, the water flow should be decreased.

Experimental Study on Solar Heat Battery using Phase Change Materials for Parabolic Dish Collectors

“…The suitable applications are hot water, cooking, spaceheating, thermochemical reactions, fuel production, frying, drying, water-splitting, vapor generation, autoclave, and medical sterilization, etc. (Ghazouani et al 2019;El Mghari et al 2020;Alqahtani et al 2020;Touili et al 2020). In addition, these heat batteries could be beneficial to hydrogen and oxygen splitting through thermochemical routes (Ghorbani et al 2020;Subramaniam and Senthil, 2021).…”