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ISSN Online: 2377-424X

International Heat Transfer Conference 5
September, 3-7, 1974, Tokyo, Japan

SUSTAINED AND TRANSIENT BOILING FLOW INSTABILITIES IN A CROSS-CONNECTED FOUR-PARALLEL-CHANNEL UPFLOW SYSTEM

Get access (open in a dialog) DOI: 10.1615/IHTC5.550
pages 235-239

Abstrakt

In this study, the stability conditions and the modes of oscillation in a four parallel-channel upflow boiling system with cross-connections have been experimentally investigated using Freon-11 as the test fluid. Two major modes of oscillation, namely density-wave and pressure-drop type oscillations, have been observed. When two modes of oscillation occurred simultaneously some temperature oscillations were observed in most instances. Transient instabilities resulting from a step increase in power input and a step decrease in flow rate have also been investigated. The results have been compared with other boiling flow systems.