Abstract
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.
Original language | English (US) |
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Title of host publication | ASME 2010 4th International Conference on Energy Sustainability, ES 2010 |
Pages | 715-724 |
Number of pages | 10 |
Volume | 2 |
DOIs | |
State | Published - Dec 1 2010 |
Event | ASME 2010 4th International Conference on Energy Sustainability, ES 2010 - Phoenix, AZ, United States Duration: May 17 2010 → May 22 2010 |
Other
Other | ASME 2010 4th International Conference on Energy Sustainability, ES 2010 |
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Country/Territory | United States |
City | Phoenix, AZ |
Period | 5/17/10 → 5/22/10 |