The effect of geometrical characteristics of wavy strip turbulator and thermodynamic properties of fluid on exergy loss and heat transfer in a tube in tube heat exchanger

被引：22
|
作者：
Pourahmad, Saman [1 ]
Pesteei, Seyed Mehdi [1 ]
Mehrabi, Mehdi [2 ]
机构：
[1] Urmia Univ, Fac Engn, Dept Mech Engn, Orumiyeh, Iran
[2] Univ Pretoria, Dept Mech & Aeronaut Engn, Pretoria, South Africa
来源：
EXPERIMENTAL HEAT TRANSFER | 2019年 / 32卷 / 04期
关键词：
Tube in tube heat exchanger; wavy strip; exergy analyses; effectiveness; TRANSFER ENHANCEMENT; PRESSURE-DROP; PERFORMANCE; SHELL;
D O I：
10.1080/08916152.2018.1526229
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present work conducts an experimental investigation into the influence of flow, thermodynamic and geometrical characteristics of the wavy strip on exergy loss and dimensionless exergy loss in a tube in tube heat exchanger. The working fluid is water with hot water passing the inner tube and cold water passing annulus. Wavy strips with four different angles and three widths were investigated experimentally. The result of exergy loss and dimensionless exergy loss for various conditions is presented and on the basis of curve fitting, three empirical correlations are suggested to predict dimensionless exergy loss in a double tube heat exchanger.
引用
收藏
页码：393 / 409
页数：17
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