Experimental investigation of the influence of the cross flow in the nozzle region on the shell-side heat transfer in double-pipe heat exchangers

被引：8

作者：

Aicher, T ^{[1
]}

Kim, WK ^{[1
]}

机构：

[1] Univ Karlsruhe, Inst Therm Verfahrenstech, D-76128 Karlsruhe, Germany

来源：

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER | 1998年 / 25卷 / 01期

关键词：

D O I：

10.1016/S0735-1933(97)00136-X

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In shell-and-tube heat exchangers, the shell-side fluid flow enters and leaves through nozzles which are mounted on the shell wall. The cross-now in the nozzle region has an impact on the shell-side pressure drop and heat transfer. The influence on the heat transfer is investigated by means of experiments with four double-pipe heat exchangers. The results show that the influence is greater, the shorter the heat exchangers are, and the smaller the ratio of the free cross sectional areas of the nozzle to that of the shell-side. A correlation suitable for predicting the heat transfer coefficient is presented in this paper. The correlation consists of the Nusselt number for the now in the nozzle region and that for the now in the annulus. (C) 1998 Elsevier Science Ltd.

引用

页码：43 / 58

页数：16