热管换热器与旋转蓄热式换热器的比较分析

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2025-05-06 DOI:10.1016/j.csite.2025.106274

Koray Özdemi̇r , Elif Öğüt

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引用次数: 0

摘要

本文结合热管换热器（THEX）的实验部分进行了数学建模研究。然后，对热回收应用中广泛使用的旋转式蓄热式换热器（RHEX）进行了分析建模。利用经文献实验数据证实的模型，设计了与热管换热器体积相同的蓄热式换热器。采用所提出的设计，对相同质量流量和进口温度的热管式换热器和旋转式蓄热式换热器在出口温度、总有效性值、风机总功率要求、质量和材料成本等方面进行了比较。在此背景下，研究了热流入口速度的影响。在相同运行条件下，RHEX的总效率值比RHEX高24.7%，RHEX的风机总功率需求约为RHEX的45倍，RHEX的总质量约为RHEX的16倍。此外，RHEX的总材料成本大约是THEX的4倍。一般来说，热管换热器在效率、总风扇功率要求和热回收应用成本方面脱颖而出。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A comparative analysis of heat pipe and rotary regenerative heat exchangers

In this study, a mathematical modeling study combined with experimental part of a heat pipe heat exchanger (THEX) was performed. Then, the rotary type regenerative heat exchanger (RHEX), which is widely used in heat recovery applications, is also analytically modeled. Using these models confirmed by experimental data from literature, a regenerative heat exchanger design with the same volume as the heat pipe heat exchanger has been designed. Using proposed designs, heat pipe heat exchanger and rotary type regenerative heat exchanger with the same mass flowrates and air inlet temperatures were compared in terms of air outlet temperatures, total effectiveness value, total fan power requirements, mass and material cost. In this context, effects of hot stream inlet velocity were investigated. Under the same operating conditions, the total effectiveness value of THEX is found to be 24.7 % higher than RHEX, the total fan power requirement at RHEX is approximately 45 times higher than THEX, the total mass of RHEX is approximately 16 times higher than THEX. In addition, RHEX total material cost is approximately 4 times higher than THEX. In general, the heat pipe heat exchanger stands out in terms of effectiveness, total fan power requirement, and cost for heat recovery applications.

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.