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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

STORAGE AND DISCHARGE OF ENERGY IN A PHASE CHANGE BY PULVERIZATION OF MOLTEN SALTS : USE OF DIRECT HEAT EXCHANGERS

Get access (open in a dialog) DOI: 10.1615/IHTC7.2260
pages 289-294

要約

The study presents a new kind of direct heat exchangers between a salt and a gas. A comparison is developped with classical heat exchangers that include an intermediate wall to separate the two fluids.

In a first part, the process of discharge of a molten salt latent heat in a cold gas is studied. The molten salt is pulverized in drops of approximately one millimeter of diameter in a counter current flow of gas. Theoretical modeling and numerical calculation of an actual direct heat exchanger are presented. Results are compared with those obtained with an experimental scale model.

The second part of the paper analyses the opposite process. A hot gas melts a salt initially under a granular form. Heat is stored in the latent heat of the molten salt. Use of very hot and highly polluted gases produced by steel and glass industries was emphasized.