A novel solar air heater is presented, that allows for temperatures exceeding 100° C with thermal efficiencies of over 50%, due to a non-imaging solar concentrator and the reduction of thermal losses from the air circulating between the absorber and mirrors with a circular cross-section, which are well insulated from the outside surroundings. The receiver consists of a concentrator with transparent prisms that function as lenses. The rays of light refracted by the prisms enter a series of CPC concentrators, which have been optimally truncated so that the space between them allows for the positioning of the absorber, which consists of a series of metallic segments covered with a selective film. Its excellent performance makes it ideal for applications such as Sauna baths, drying processes at high temperatures, and air conditioning systems.
- Advanced Energy Systems Division and Solar Energy Division
New Solar Air Heater Based on Non-Imaging Optics for High-Temperature Applications
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Rinco´n, E, Dura´n, M, & Lentz, A. "New Solar Air Heater Based on Non-Imaging Optics for High-Temperature Applications." Proceedings of the ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences. ASME 2009 3rd International Conference on Energy Sustainability, Volume 2. San Francisco, California, USA. July 19–23, 2009. pp. 839-844. ASME. https://doi.org/10.1115/ES2009-90306
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