Air Molten Salt Direct-Contact Heat Exchange

[+] Author and Article Information
M. S. Bohn

Solar Energy Research Institute, 1617 Cole Boulevard, Golden, Colo. 80401

J. Sol. Energy Eng 107(3), 208-214 (Aug 01, 1985) (7 pages) doi:10.1115/1.3267680 History: Received April 01, 1984; Online November 11, 2009


Volumetric heat transfer coefficients for direct-contact heat exchange between air and molten nitrate salt have been measured as a function of air and salt flow rates at 350° C salt inlet temperature. Using these heat transfer data for a packed column-type heat exchanger, an economic analysis was used to compare direct-contact heat exchange with conventional finned-tube heat exchangers. High volumetric rates of heat transfer (2000–3000 W/m3 °C) and flexibility in choice of materials of construction allow one to realize significant economic benefits by using direct-contact heat exchange in this application.

Copyright © 1985 by ASME
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