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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

ON THE BEHAVIOR OF NATURAL CIRCULATION LOOPS WITH PARALLEL CHANNELS

Get access (open in a dialog) DOI: 10.1615/IHTC7.3280
pages 299-304

Sinopsis

The present work is a theoretical analysis describing the flow and heat transfer in natural circulation loops relevant to nuclear reactor cooling. The system under consideration includes one heat source and a general number (n) of parallel branches with a heat exchanger in each of them. A one-dimensional approach is adopted, whereby the only space coordinate runs along the circulation loop (in each branch). For steady state, the coupled momentum and energy equations are solved numerically to yield the flow rates and the temperature distributions in the branches. The method has been applied to a small scale two loop system with once-through heat exchangers. Results have been obtained for various operating conditions, including a-symmetric operation of the heat exchangers, i.e., different secondary coolant flow rates. The results have been compared against available data and reasonable agreement is found.