Aqueous calcium chloride has a number of potential advantages as a compact and long-term solar storage medium compared to sensibly heated water. The combination of sensible and chemical binding energy of the liquid desiccant provides higher energy densities and lower thermal losses, as well as a temperature lift during discharge via an absorption heat pump. Calcium chloride is an excellent choice among desiccant materials because it is relatively inexpensive, non-toxic, and environmentally safe. This paper provides an overview of its application for solar storage and presents a novel concept for storing the liquid desiccant in a single storage vessel. The storage system uses an internal heat exchanger to add and discharge thermal energy and to help manage the mass, momentum, and energy transfer in the tank. The feasibility of the proposed concept is demonstrated via a computational fluid dynamic study of heat and mass transfer in the system over a range of Rayleigh, Lewis, Prandtl, and buoyancy ratio numbers expected in practice.
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ASME 2010 4th International Conference on Energy Sustainability
May 17–22, 2010
Phoenix, Arizona, USA
Conference Sponsors:
- Advanced Energy Systems Division and Solar Energy Division
ISBN:
978-0-7918-4395-6
PROCEEDINGS PAPER
Liquid Calcium Chloride Solar Storage: Concept and Analysis
Josh A. Quinnell,
Josh A. Quinnell
University of Minnesota, Minneapolis, MN
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Jane H. Davidson,
Jane H. Davidson
University of Minnesota, Minneapolis, MN
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Jay Burch
Jay Burch
National Renewable Energy Laboratory, Golden, CO
Search for other works by this author on:
Josh A. Quinnell
University of Minnesota, Minneapolis, MN
Jane H. Davidson
University of Minnesota, Minneapolis, MN
Jay Burch
National Renewable Energy Laboratory, Golden, CO
Paper No:
ES2010-90181, pp. 715-724; 10 pages
Published Online:
December 22, 2010
Citation
Quinnell, JA, Davidson, JH, & Burch, J. "Liquid Calcium Chloride Solar Storage: Concept and Analysis." Proceedings of the ASME 2010 4th International Conference on Energy Sustainability. ASME 2010 4th International Conference on Energy Sustainability, Volume 2. Phoenix, Arizona, USA. May 17–22, 2010. pp. 715-724. ASME. https://doi.org/10.1115/ES2010-90181
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