Turbulent heat transfer enhancement in an air-to-water heat exchanger

被引：20

作者：

Sheikholeslami, Mohsen ^{[1
]}

Ganji, Davood Domiri ^{[1
]}

机构：

[1] Babol Noshirvani Univ Technol, Dept Mech Engn, Babol Sar, Iran

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING | 2017年 / 231卷 / 06期

关键词：

Water-to-air heat exchanger; computational fluid dynamics; Darcy factor; force convection; turbulent; helical fins; PRESSURE-DROP; NUMERICAL SIMULATIONS; FLOW; NANOFLUID; INSERTS; RING; TUBE;

D O I：

10.1177/0954408916664758

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Hydrothermal behavior in a water-to-air double-pipe heat exchanger is studied experimentally and numerically. To achieve fully developed conditions, the heat exchanger was built with additional lengths before and after the test section. Commercial code (ANSYS 14) is used for numerical section. In order to enhance rate of heat transfer, discontinuous helical fins is utilized. Results show that Nusselt number augments with the enhancement of Reynolds number and Prandtl number, which are calculated at bulk temperature. The use of square section helical fins also shows a higher heat transfer enhancement rate than that of the circular one. Thermal performance factor is an increasing function of the open area ratio.

引用

页码：1235 / 1248

页数：14

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