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第13届国际传热学会年报

ISBN 打印: 1-56700-226-9 (CD)
ISBN 在线: 1-56700-225-0

COMBINED ORIENTATION AND CONFINEMENT EFFECTS ON SATURATED POOL BOILING OF A DIELECTRIC LIQUID

DOI: 10.1615/IHTC13.p28.310
page 12

G. Guglielmini
Dipartimento di Ingegneria Energetica - Universita di Genova - Genova ITALIA

Mario Misale
DITEC - University of Genoa, via All'Opera Pia 15/A, Genova, (I) 161452, Italy

Antonella Priarone
Universita degli Studi di Genova, Genova, Italy

Abstract

Experiments were performed to analyse the combined effects of surface orientation and confinement on nucleate pool boiling and critical heat flux of a dielectric fluid on a smooth copper surface. Pool boiling data at atmospheric pressure were obtained for saturated HFE-7100. The surface orientation was varied from 0° (horizontal upward surface) to 135°, through regular increments. The confined boiling condition was obtained by placing an unheated disc face to face with the heated surface. The channel widths between the boiling surface and adiabatic surface were 20, 10, 5, 3.5, 2 and 1 mm, respectively. For each configuration, the boiling curve was obtained up to the thermal crisis.

IHTC-13 Digital Library

Measurement of fluid temperature with an arrangement of three thermocouples FLOW BOILING OF A HIGHLY VISCOUS POLYMER SOLUTION