HEAT TRANSFER ENHANCEMENT IN MICRO-DOMAINS USING GAS-DRIVEN LIQUID FILM

被引：0

作者：

Houshmand, Farzad ^{[1
]}

Peles, Yoav ^{[1
]}

Amitay, Michael ^{[1
]}

机构：

[1] Rensselaer Polytech Inst, Dept Mech Aerosp & Nucl Engn, Troy, NY 12180 USA

来源：

PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION - 2012, VOL 7, PTS A-D | 2013年

关键词：

FLOW; MICROCHANNELS; EVAPORATION;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A liquid film has been introduced upstream of a heater in a microchannel with gas flow, and the impact on the heat transfer performance has been investigated. The shear force exerted by the gas flow on the gas-liquid interface drives the film and drags it downstream, onto the heated area. Distilled water was injected through a 350 mu m circular hole in a main stream of Nitrogen in a 220 mu m deep and 1.5 mm wide rectangular microchannel to enhance the heat transfer from a 1 mm x 1 mm heater. Average heat transfer coefficient was studied for different gas and liquid flow rates and compared with single-phase flow. Significant improvement in heat transfer performance was observed while the pressure drop in the channel was not increased dramatically.

引用

页码：705 / 711

页数：7

共 19 条

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