Numerical Simulation for Polypropylene Hollow Fiber Heat Exchanger

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Abstract

Hollow fiber heat exchangers (HFHEs) have gained more attention because of their great resistances to chemical corrosion and fouling for lower temperature applications. In this study, a new structure of HFHE by adding segmental baffles in the shell-side was proposed to strengthen the heat transfer efficiency. Three-dimensional models of HFHEs were built by Gambit 2.4. The models were calculated with the help of Fluent 6.3 by finite volume method. Results show that the deviation of overall heat transfer coefficient(U) and pressure drop of shell-side between simulated and experimental results is less than 8% and 6%, respectively. After adding segmental baffles in HFHE shell-side, the overall heat transfer coefficient is improved by 21% on the condition of simulation, the ratio of shell-side resistance to overall resistance is decreased approximately from 59%-70% to 46%-57%, the pressure drop of shell-side is improved by 12%, but the ratio of shell-side heat transfer coefficient to pressure drop is also greatly increased. HFHE with baffles has better integrated performance than PHFHE without baffles.

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	Articles by authors
	Liu Baoliang
	Yan Xiujuan
	Liu Jun
	Zhao Jie
	Li Baoan

Keywords： hollow fiber heat exchanger； segmental baffles； numerical simulation； heat transfer efficiency

Received 2015-03-24;

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Cite this article:

Liu Baoliang, Yan Xiujuan, Liu Jun, Zhao Jie, Li Baoan.Numerical Simulation for Polypropylene Hollow Fiber Heat Exchanger[J] Chemcial Industry and Engineering, 2017,V34(1): 90-95

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