HEAT TRANSFER FROM A SMALL, HIGH-HEAT-FLUX PATCH TO A SUBCOOLED TURBULENT FLOW.

K. R. Samant, T. W. Simon

Research output: Contribution to journalConference article

8 Scopus citations

Abstract

An experimental investigation of heat transfer from a small heated patch to a subcooled, fully-developed turbulent flow was conducted. The test patch, approximately 0. 25 mm long and 2. 0 mm wide, is located on the floor of a small rectangular channel through which a coolant (R-113 or FC-72) is circulated. A thin film of Nichrome deposited on a quartz substrate serves as an integrated heater element and a resistance thermometer. The results obtained with FC-72 show large temperature overshoots and a boiling hysteresis near the onset of nucleate boiling. The nucleate boiling regime spans over a short range in heat flux at low velocity and low subcooling.

Original languageEnglish (US)
JournalAmerican Society of Mechanical Engineers (Paper)
StatePublished - Jan 1 1986

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