基于仿真的同心管式换热器终端评估

B. Kristiawan, A. Wijayanta, W. E. Juwana, R. A. Rachmanto, Koji Enoki, Arfi Singgih Prasojo
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引用次数: 0

摘要

双管换热器是最常用的换热器设备之一。在这项研究中,使用 ANSYS 代码 FLUENT 对作为双管换热器装置的同心管换热器进行了模拟。模拟基于雷诺数从 400010.000 的变化,采用了同流和逆流的方法。流体力学和热学模拟结果分别与 Pethukov 和 Dittus-Bolter 方程的经验相关性相吻合。水基流体和纳米流体 f TiO2/water f (0.1 vol.%)的摩擦系数在同流和逆流的湍流状态下没有显著差异。从传热系数值来看,TiO2/水(0.1% vol.%)纳米流体的热性能在逆流时提高了 6.9%,在同流时提高了 6.0%。同时,流体在热交换器中的流动方向对其热性能没有显著影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
SIMULATION-BASED ASSESSMENT KINERJA TERMAL PADA CONCENTRIC TUBE HEAT EXCHANGER
The double-pipe heat exchanger is one of the most popular heat exchanger devices. In this study, the concentric tube heat exchanger as the double pipe heat exchanger device was simulated with ANSYS code FLUENT. The simulation was done by based on the Reynolds number variation from 400010.000 using the method of co-current and counter flow. The hydrodynamic and thermal simulation results agree with the empirical correlation of the Pethukov and Dittus-Bolter equations, respectively. The friction factors of the water base fluid and nanofluid f TiO2/water f (0.1 vol.%) do not result in a significant difference in the turbulent flow regime for both co-current and counter flow. The thermal performance of TiO2/water (0.1% vol) nanofluid as indicated by the value of the heat transfer coefficient results in an increase of 6.9% for counter low flow and 6.0% for co-current flow. Meanwhile, the direction of fluid flow in the heat exchanger does not have a significant effect on its thermal performance.
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