强迫对流换热的实验技术和测量方法

对流换热系数的研究是研究对流换热问题的根本,本文对近十年来研究强迫对流换热问题的实验常用方法作了介绍,包括管内对流换热系数的瞬态测量法、窄环隙流道强迫对流换热实验、双侧加热窄环隙流道强迫对流换热实验以及无相变流体在内斜齿螺旋槽管内强化对流换热实验。并对各种方法进行了简单的评价。

Experimental Technology and Measurement Methods on Forced Heat Transfer of Convection

The study of convective coefficient is the fundamental question of heat transfer of convection This paper introduces common experimental methods about the enhancement of heat transfer in a nearly decade, including the transient measurement of in-tube heat transfer convectional coefficient, experiments of annular flow narrow road forced convectional heat transfer, experiments of bilateral heating narrow annular flow forced convectional heat transfer and experiments of no-fluid-phase transition in helical spiral groove tube enhanced convection heat transfer, and gives brief introduction to the mentioned methods.