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International Heat Transfer Conference 9

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

BOILING HEAT TRANSFER AND CRITICAL HAT FLUX IN A CONFINED NARROW SPACE EFFECTS OF GAP SIZE, INCLINATION ANGLE, AND PERIPHERAL CONDITIONS AT THE SPACE EDGE

Yasunobu Fujita
Department of Mechanical Engineering, Kyushu University, Hakozaki 6-10-1, Fukuoka, 812-8581, Japan

Satoru Uchida
Department of Energy and Mechanical Engineering, Kyushu University 36, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812, Japan

DOI: 10.1615/IHTC9.260
pages 153-158

Abstract

This paper aims at building up basic knowledge of boiling heat transfer and critical heat flux (CHF) in a confined narrow space. For this purpose, experiments were systematically performed for boiling of saturated water at atmospheric pressure between heated and unheated parallel rectangular plates. Tested variables specifying the narrow space were gap size, inclination angle, and peripheral conditions that the sides of narrow space are open or closed. On the basis of measurements and observations, boiling behaviors and heat transfer characteristics were discussed. Measured CHF under two different peripheral conditions were compared with predictions on the corresponding CHF models.

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