ANALYSIS OF THERMALLY DEVELOPING LAMINAR CONVECTION IN THE FINNED DOUBLE-PIPE HEAT EXCHANGER

被引：0

作者：

Iqbal, Mazhar ^{[1
]}

Syed, K. S. ^{[2
]}

机构：

[1] Natl Univ Sci & Technol, CEME, DBS&H, Islamabad, Pakistan

[2] BZU, CASPAM, Multan, Pakistan

来源：

HEAT TRANSFER RESEARCH | 2014年 / 45卷 / 01期

关键词：

thermally developing flow; heat transfer; 1D fin equation; Nusselt number; entrance length; ANNULAR-SECTOR DUCTS; ENTRANCE REGION; WALL TEMPERATURE; FLOW; TUBES; UNIFORM; FINS;

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this work we have carried out the study of convective heat transfer of hydrodynamically fully developed but thermally developing laminar flow in the entrance region of a finned double-pipe heat exchanger. We have taken one-dimensional temperature profile in the radial direction of the fins under the thin fin assumption. It is shown that the heat transfer rate in the thermal entrance region is much higher than in the fully developed region, and the assumption of infinite fin conductivity loses validity in the entrance region.

引用

页码：1 / 21

页数：21

共 20 条

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