Local Thermal Resistance Delamination Method for Precise Analysis and Optimization of Heat Transfer Processes

24 Pages Posted: 12 Apr 2024

See all articles by Qiuwang Wang

Qiuwang Wang

Xi'an Jiaotong University (XJTU)

Shihong Ma

affiliation not provided to SSRN

Hongliang Chang

affiliation not provided to SSRN

Xiangxuan Li

affiliation not provided to SSRN

Bo Zhang

affiliation not provided to SSRN

Ting Ma

affiliation not provided to SSRN

Abstract

Excessive carbon emissions are one of the global challenges. Promoting the optimization of high-efficiency heat transfer systems and improving the analysis and evaluation methods of heat exchangers is one of the effective ways to save energy and reduce carbon emissions. The traditional thermal resistance analysis method treats the fluid domain as a uniform whole, which makes it difficult to regulate the heat transfer characteristics in local regions, especially in the near-wall region. To address this problem, this paper obtained the thermal resistance mathematical equation for different regions in the flow field by magnitude analysis. The thermal resistance delamination method for dividing the thermal resistance field is proposed from the channel flow, and the conduction, mixing and advection zones in the flow field are identified. The delamination factor (α) is defined to determine the boundaries of thermal resistance zones. The α values which meet the delamination factor independence under forced convection and natural convection conditions are investigated. By studying the mechanism of the thermal resistance in conduction zone of the enhanced heat transfer structure, critical value of fin height to achieve maximum enhancement efficiency is determined. The thermal resistance delamination facilitates a comprehensive analysis of heat transfer processes and structure optimization.

Keywords: Magnitude analysis, Thermal resistance delamination, Near-wall heat exchange, Heat transfer analysis and enhancement, Maximum enhancement efficiency

Suggested Citation

Wang, Qiuwang and Ma, Shihong and Chang, Hongliang and Li, Xiangxuan and Zhang, Bo and Ma, Ting, Local Thermal Resistance Delamination Method for Precise Analysis and Optimization of Heat Transfer Processes. Available at SSRN: https://ssrn.com/abstract=4792551 or http://dx.doi.org/10.2139/ssrn.4792551

Qiuwang Wang (Contact Author)

Xi'an Jiaotong University (XJTU) ( email )

Xi'an
China

Shihong Ma

affiliation not provided to SSRN ( email )

No Address Available

Hongliang Chang

affiliation not provided to SSRN ( email )

No Address Available

Xiangxuan Li

affiliation not provided to SSRN ( email )

No Address Available

Bo Zhang

affiliation not provided to SSRN ( email )

No Address Available

Ting Ma

affiliation not provided to SSRN ( email )

No Address Available

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