Distribution performance of gas-liquid mixture in the shell side of spiral-wound heat exchangers

doi:10.1016/j.cjche.2019.05.009

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (10): 2284-2292.DOI: 10.1016/j.cjche.2019.05.009

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

Distribution performance of gas-liquid mixture in the shell side of spiral-wound heat exchangers

Wenke Zheng^1,2, Weihua Cai^3,4, Yiqiang Jiang^1,2

1 School of Architecture, Harbin Institute of Technology, Harbin 150090, China;
2 Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology, Harbin 150090, China;
3 School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
4 School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, China

收稿日期:2018-07-06 修回日期:2019-04-26 出版日期:2019-10-28 发布日期:2020-01-17
通讯作者: Weihua Cai, Yiqiang Jiang
基金资助:
Supported by the research funds from MIIT program on High Technology Research Program of Ship (2013K4181).

Distribution performance of gas-liquid mixture in the shell side of spiral-wound heat exchangers

Wenke Zheng^1,2, Weihua Cai^3,4, Yiqiang Jiang^1,2

1 School of Architecture, Harbin Institute of Technology, Harbin 150090, China;
2 Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology, Harbin 150090, China;
3 School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
4 School of Energy and Power Engineering, Northeast Electric Power University, Jilin 132012, China

Received:2018-07-06 Revised:2019-04-26 Online:2019-10-28 Published:2020-01-17
Contact: Weihua Cai, Yiqiang Jiang
Supported by:
Supported by the research funds from MIIT program on High Technology Research Program of Ship (2013K4181).

摘要/Abstract

摘要： The non-uniformity of gas-liquid mixture is a critical issue which leads to the heat transfer deterioration of spiralwound heat exchangers (SWHEs). Two-phase mass flow rate and the content of gas are important parameters as well as structural parameters which have prominent influences on flow distribution uniformity of SWHE shell side. In order to investigate the influences of these parameters, an experimental test system was built using water and air as mediums and a novel distributor named "tubes distributor" was designed. The effects of mass flow rate and the content of gas on two-phase distribution performance were analyzed, where the mass flow rate ranged from 28.4 to 171.9 kg·h^-1 and the content of gas changed from 0.2 to 0.8, respectively. The results showed that the mixture mass flow rate considerably influenced the liquid distribution than that of gas phase and the larger mass flow rate exhibited the better distribution uniformity of two-phase flow. It was also found that the tubes distributor had the better two-phase uniformity when the content of gas was around 0.4. Tube diameter played an important role in the distribution of gas phase and slit width was more significant for the uniformity of liquid phase.

关键词: Spiral-wound heat exchanger, Gas-liquid mixture, Multiphase flow, Distribution uniformity

Abstract: The non-uniformity of gas-liquid mixture is a critical issue which leads to the heat transfer deterioration of spiralwound heat exchangers (SWHEs). Two-phase mass flow rate and the content of gas are important parameters as well as structural parameters which have prominent influences on flow distribution uniformity of SWHE shell side. In order to investigate the influences of these parameters, an experimental test system was built using water and air as mediums and a novel distributor named "tubes distributor" was designed. The effects of mass flow rate and the content of gas on two-phase distribution performance were analyzed, where the mass flow rate ranged from 28.4 to 171.9 kg·h^-1 and the content of gas changed from 0.2 to 0.8, respectively. The results showed that the mixture mass flow rate considerably influenced the liquid distribution than that of gas phase and the larger mass flow rate exhibited the better distribution uniformity of two-phase flow. It was also found that the tubes distributor had the better two-phase uniformity when the content of gas was around 0.4. Tube diameter played an important role in the distribution of gas phase and slit width was more significant for the uniformity of liquid phase.

Key words: Spiral-wound heat exchanger, Gas-liquid mixture, Multiphase flow, Distribution uniformity

Wenke Zheng, Weihua Cai, Yiqiang Jiang. Distribution performance of gas-liquid mixture in the shell side of spiral-wound heat exchangers[J]. 中国化学工程学报, 2019, 27(10): 2284-2292.

Wenke Zheng, Weihua Cai, Yiqiang Jiang. Distribution performance of gas-liquid mixture in the shell side of spiral-wound heat exchangers[J]. Chinese Journal of Chemical Engineering, 2019, 27(10): 2284-2292.

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Distribution performance of gas-liquid mixture in the shell side of spiral-wound heat exchangers

Distribution performance of gas-liquid mixture in the shell side of spiral-wound heat exchangers

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