取压方式对微通道内单相摩擦阻力特性的影响  

THE EFFECT OF PRESSURE MEASUREMENT METHODS ON SINGLE-PHASE FRICTIONAL PRESSURE DROP IN MICROCHANNELS

作　　者：李卓[1] 俞坚[1] 马重芳[1] 

机构地区：[1]传热强化与过程节能教育部重点实验室及传热与能源利用北京市重点实验室北京工业大学,北京100022

出　　处：《工程热物理学报》2006年第6期1008-1010,共3页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展规划(973)项目(No.G2000026300)

摘　　要：本文以去离子水和氮气为工质,在水平圆形微通道(dh=0．336 mm)中采用两种直接取压方式-缝隙取压和小孔取压,对单相摩擦阻力特性进行了实验研究,并通过改变缝隙宽度,研究缝隙宽度对压降测量偏差的影响．Single-phase frictional pressure drop in microchannels were experimentally investigated, using nitrogen and water. The experiments of single-phase flow through straight tube （dh=0.336 mm） were performed using two different pressure measurement methods - pressure measurements through a hole and a gap. At the same time, through changing the width of gap, the effect of different gap widths on the pressure measurement was researched.

关 键 词：微通道 取压方式 摩擦阻力 缝隙取压 

分 类 号：TK124[动力工程及工程热物理—工程热物理]