EFFECT OF CONDENSER LOCATION AND IMPOSED CIRCULATION ON THE PERFORMANCE OF A COMPACT TWO-PHASE THERMOSYPHON

Authors: Yuan L.¹; Joshi Y.²; Nakayama W.³

Source: Microscale Thermophysical Engineering, Volume 7, Number 2, April/May/June 2003 , pp. 163-179(17)

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Abstract:

This study investigates the issues involved in the design of a compact two-phase thermosyphon in which the locations of evaporator and condenser need a high degree of freedom. Enhancement of boiling heat transfer in the compact evaporator space was achieved by a microfabricated structure. Anticipating situations where gravity does not provide sufficient potential to drive the condensate, a pump-assisted circulation loop was studied. The relative height between the evaporator and condenser and the pumping rate were systematically varied by utilizing two thermosyphon loops. Close examination of the data suggests that there could be an optimum point in the parametric domain where the thermal resistance is minimized with least assistance from the pump.

Keywords: liquid cooling; two-phase flow cooling; electronic packaging; compact heat exchangers; high heat flux cooling

Document Type: Research article

Affiliations: 1: Fujitsu Network Communications, Pearl River, NY 2: G.W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 3: Therm Tech International, Kanagawa, Japan

Publication date: 2003-04-01

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