低温板翅式热交换器热液压特性的实验研究

IF 1.8 3区 工程技术 Q3 PHYSICS, APPLIED
Bo Kyem Kim , Jin Woo Yoo
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引用次数: 0

摘要

板翅式热交换器(PFHE)因其卓越的性能而被广泛应用于各种领域。最近,低温行业对 PFHE 的需求有所增加。因此,评估 PFHE 在低温条件下的热性能和水力性能对于有效设计 PFHE 至关重要。本研究通过实验研究了低温氮气流经 PFHE 的热液压特性。本研究采用了两种不同翅片几何形状的 PFHE。PFHE 的水力直径分别为 2.13 毫米和 1.47 毫米。雷诺数和普朗特尔数的实验范围分别为 345-7800 和 0.72-0.75。根据实验结果,得出了湍流和层流状态下基于 Diani 相关性的传热相关性,湍流和层流状态下的均方根百分误差分别为 0.68% 和 6.9%。在水力性能方面,计算得出的压降与实验数据十分吻合,均方根误差为 13%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental study on thermal-hydraulic characteristics of cryogenic plate-fin heat exchangers

Plate-fin heat exchangers (PFHEs) are used in diverse applications because of their superior capabilities. Recently, the demand for PFHEs has increased in cryogenic industries. Therefore, evaluating the thermal and hydraulic performances of PFHEs under cryogenic conditions is crucial for effectively designing them. In this study, the thermal–hydraulic characteristics of cryogenic nitrogen gas flowing through PFHEs were investigated experimentally. Two PFHEs with different fin geometries are used in this study. The hydraulic diameters of the PFHEs were 2.13 and 1.47 mm. The experimental ranges of the Reynolds and Prandtl numbers were 345–7800 and 0.72–0.75, respectively. From the experimental results, a heat transfer correlation based on the Diani correlation was derived in both turbulent and laminar regimes, with root mean square percentage errors of 0.68 and 6.9 % for the turbulent and laminar regimes, respectively. For hydraulic performance, the calculated pressure drop demonstrated good agreement with the experimental data, with a root mean square percentage error of 13 %.

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来源期刊
Cryogenics
Cryogenics 物理-热力学
CiteScore
3.80
自引率
9.50%
发文量
0
审稿时长
2.1 months
期刊介绍: Cryogenics is the world''s leading journal focusing on all aspects of cryoengineering and cryogenics. Papers published in Cryogenics cover a wide variety of subjects in low temperature engineering and research. Among the areas covered are: - Applications of superconductivity: magnets, electronics, devices - Superconductors and their properties - Properties of materials: metals, alloys, composites, polymers, insulations - New applications of cryogenic technology to processes, devices, machinery - Refrigeration and liquefaction technology - Thermodynamics - Fluid properties and fluid mechanics - Heat transfer - Thermometry and measurement science - Cryogenics in medicine - Cryoelectronics
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