It has been established that the development of a storage option and increasing the operating temperature for parabolic trough electric systems can significantly reduce the levelized electricity cost compared to the current state of the art. Both improvements require a new heat transfer fluid that must have a very low vapor pressure at the hot operating temperature and combined with a high thermal stability, higher than Further, the piping layout of trough plants dictates that the fluid not be allowed to freeze, which dictates the use of extensive insulation and heat tracing unless the fluid has a freezing point near At present, it seems likely that this “ideal” fluid will have to be found among organic rather than inorganic salts. We are, therefore, investigating the chemical and thermal properties of “room temperature ionic liquids” that hold much promise as a new class of heat transfer or storage fluids.
Advanced Thermal Storage Fluids for Solar Parabolic Trough Systems
Contributed by the Solar Energy Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received by the ASME Solar Energy Division, April 2002; final revision August 2002. Associate Editor: M. Olszewski.
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Moens, L., Blake, D. M., Rudnicki, D. L., and Hale , M. J. (January 27, 2003). "Advanced Thermal Storage Fluids for Solar Parabolic Trough Systems ." ASME. J. Sol. Energy Eng. February 2003; 125(1): 112–116. https://doi.org/10.1115/1.1531644
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