Performance Assessment of Double Corrugated Tubes in a Tube-In-Shell Heat Exchanger

被引：3
|
作者：
Navickaite, Kristina [1 ]
Penzel, Michael [1 ]
Bahl, Christian R. H. [2 ]
Engelbrecht, Kurt [2 ]
机构：
[1] Beckmann Inst Technol Entwicklung eV, Annaberger Str 73, D-09111 Chemnitz, Germany
[2] Tech Univ Denmark, Dept Energy Convers & Storage, DK-2800 Lyngby, Denmark
来源：
ENERGIES | 2021年 / 14卷 / 05期
关键词：
nature inspired geometry; enhanced heat transfer; turbulent flow region; CFD modelling;
D O I：
10.3390/en14051343
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this article, the performance of double corrugated tubes applied in a tube-in-shell heat exchanger is analysed and compared to the performance of a heat exchanger equipped with straight tubes. The CFD (computational fluid dynamics) analysis was performed considering a turbulent flow regime at several mass flow rates. It is observed that the double corrugated geometry does not have a significant impact on the pressure drop inside the analysed heat exchanger, while it has the potential to increase its thermal performance by up to 25%. The epsilon-NTU (effectiveness-number of transfer units) relation also demonstrates the advantage of using double corrugated tubes in tube-in-shell heat exchangers over straight tubes.
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页数：17
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