Velocity Profiles between Two Baffles in a Shell and Tube Heat Exchanger
- 저자
- T*e-Hyun Chang, Chang-Hoan Lee, Hae-Soo Lee, and Kwon-Soo Lee
- 게재저널
- Journal of Thermal Science Vol.24, No.4 (2015) 1-8
- 키워드
- Baffle, PIV, Shell and tube heat exchanger, Cut off ratio, CFD
- 개요
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Heat exchangers are extensively utilized for waste heat recovery, oil refining, chemical processing, and steam generation. In this study, velocity profiles are measured using a 3D particle image velocimetry (PIV) system between two baffles in a shell and tube heat exchanger for parallel and counter flows. The PIV and computational fluid dynamics results show the occurrence of some strong vectors near the bottom. These vectors are assumed to be the clearance between the inner tubes and the front baffle. Therefore, the major parts of the vectors are moved out through the bottom opening of the rear baffle, and other vectors produce a large circle between the two baffles. Numerical simulations are conducted to investigate the effects of the baffle on the heat exchanger using the Fluent software. The k？ε turbulence model is employed to calculate the flows along the heat exchanger for the bath flow. The strong velocity profiles locate at the outlet of the two baffles and near the center for the parallel flow. The cooling water has an influence on the wall of the cooling water chamber.
- 첨부파일
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