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Abstract
In the present work, multiphysics numerical modeling is carried out to predict the performance of a liquid-gas fin and tube heat exchanger design. Three-dimensional (3D) steady-state numerical model using commercial software COMSOL based on finite element method (FEM) is developed. The study associates conjugate heat transfer phenomenon with the turbulent flow to describe the variable temperature and velocity profile. The performance of heat exchanger design is investigated in terms of overall heat transfer coefficient, Nusselt number, Colburn j-factor, flow resistance factor, and efficiency index. In addition, the impact of thermal contact resistance at an interface between fin and tube on the performance is examined. It is found that contact resistance of 3.3 x 10-6 (Km2)/W can reduce the overall performance by approx. 6% when compared with the case of no thermal contact resistance between fin and tube. The present numerical model predicts the performance of the heat exchanger design, therefore, can be applied to existing waste heat recovery systems to improve the overall performance with optimized design and process-dependent parameters.
Original language | English |
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Publication date | Mar 2016 |
Number of pages | 5 |
Publication status | Published - Mar 2016 |
Event | The First Pacific Rim Thermal Engineering Conference - Waikoloa Beach Marriott Resort & Spa Hawaii's Big Island, Waikoloa Beach, Hawaii, United States Duration: 13 Mar 2016 → 17 Mar 2016 Conference number: 1 http://www.jsme.or.jp/ted/PRTEC2016/ |
Conference
Conference | The First Pacific Rim Thermal Engineering Conference |
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Number | 1 |
Location | Waikoloa Beach Marriott Resort & Spa Hawaii's Big Island |
Country/Territory | United States |
City | Waikoloa Beach, Hawaii |
Period | 13/03/2016 → 17/03/2016 |
Internet address |
Keywords
- Waste heat recovery
- Fin and tube heat exchanger
- Turbulent flow
- Conjugate heat transfer
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Dive into the research topics of 'Numerical Modeling of Fin and Tube Heat Exchanger for Waste Heat Recovery'. Together they form a unique fingerprint.Projects
- 1 Finished
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THERMCYC - Advanced thermodynamic cycles utilising low-temperature heat sources
Hærvig, J., Sørensen, K., Condra, T. & Singh, S.
15/09/2014 → 14/09/2017
Project: Research