On the performance of a vertical helical coil heat exchanger. Numerical model and experimental validation

被引：51

作者：

Fernandez-Seara, Jose ^{[1
]}

Pineiro-Pontevedra, Carolina ^{[1
]}

Alberto Dopazo, J. ^{[1
]}

机构：

[1] Univ Vigo, ETS Ingenieros Ind, Area Maquinas & Motores Termicos, Vigo 36310, Spain

来源：

APPLIED THERMAL ENGINEERING | 2014年 / 62卷 / 02期

关键词：

Helical coil; Heat exchanger; Experimental; Simulation; NATURAL-CONVECTION; TUBES; LAMINAR; PIPES; FLOW;

D O I：

10.1016/j.applthermaleng.2013.09.054

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A numerical model was developed in order to predict the heat transfer process and pressure drop in a vertical helical coil heat exchanger (HCHE) located inside a fluid storage tank in which water is used as inner and outer fluid. Natural convection was considered as boundary condition for the HCHE outer surface. The model was validated with experimental data obtained from an own facility with two HCHEs tested under several operating conditions. The model developed was used to evaluate the main HCHE representative geometrical parameter's influence on the overall heat transfer coefficient and pressure drop. The results show that by increasing the tube diameter causes an increase of the Nusselt number and a larger heat transfer rate to pressure drop ratio is obtained. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：680 / 689

页数：10

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