AN EXPERIMENTAL INVESTIGATION OF THE AUGMENTATION OF TUBE-SIDE HEAT-TRANSFER IN A CROSS-FLOW HEAT-EXCHANGER BY MEANS OF STRIP-TYPE INSERTS

被引：2

作者：

HSIEH, SS

KUO, MT

机构：

[1] Department of Mechanical Engineering, National Sun Yat-Sen University, Kaohsiung

来源：

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME | 1994年 / 116卷 / 02期

关键词：

AUGMENTATION AND ENHANCEMENT; FORCED CONVECTION; HEAT EXCHANGERS;

D O I：

10.1115/1.2911410

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The results of an experimental investigation of the augmentation of heat transfer in a crossflow heat exchanger by means of strip-type inserts are presented and discussed. Three kinds of strip type inserts-longitudinal strip (LS), crossed-strip (CS), and regularly interrupted strip (RIS)-are studied. Correlations for friction factor and Nusselt number are also developed. It is shown that on the basis of both constant pumping power and constant heat duty, LS-inserts perform better than CS- and RIS-inserts for tube-side Reynolds numbers above 19,000. A t tube-side Reynolds numbers below 12,000, CS-inserts perform better than LS- and RIS-inserts. Furthermore, flow visualization was made for shell-side hot air and cold air flow in the plenum to advance the qualitative understanding of the physical phenomena of this type of crossflow heat exchanger.

引用

页码：381 / 390

页数：10

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