Affiliation:
1. National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401
Abstract
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 450°C. 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 0°C. 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.
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
Reference18 articles.
1. NREL, 2000, “Survey of Thermal Storage for Parabolic Trough Power Plants,” Pilkington Solar International, prepared for NREL, Subcontract No. AAR-9-29442-05.
2. Pacheco, J. E., Showalter, S., and Kolb, W., 2001 “Development of a Molten Salt Thermocline Thermal Storage System for Parabolic Trough Plants,” Solar Forum 2001, Washington, DC, April 21–25.
3. Huddleston, J. G., Visser, A. E., Reichert, W. M., Willauer, H. D., Broker, G. A., and Rogers, R. D., 2001, “Characterization and Comparison of Hydrophilic and Hydrophobic Room Temperature Ionic Liquids Incorporating the Imidazolium Cation,” Green Chemistry, 3, pp. 156156.
4. Hagiwara, R., and Ito, Y., 2000, “Room Temperature Ionic Liquids of Alkylimidazolium Cations and Fluoroanions,” J. Fluorine Chem., 105, p. 221221.
5. Wasserscheid, P., and Keim, W., 2000, “Ionic Liquids—New ‘Solutions’ for Transition Metal Catalysis,” Angew. Chem. Int. Ed. Engl., 39, p. 37723772.
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