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Experimental Investigation on Two-Phase Flow Pattern of Hydrocarbon Refrigerants in the Shell Side of a Helically Baffled Shell and Tube Heat Exchanger
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Guocheng Yang1, Bangren Zheng1, Guoliang Ding2, Jie Chen3
Journal of Refrigeration | 2025, 46(1) : 101 - 107
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Journal of Refrigeration | 2025, 46(1): 101-107
Experimental Investigation on Two-Phase Flow Pattern of Hydrocarbon Refrigerants in the Shell Side of a Helically Baffled Shell and Tube Heat Exchanger
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Guocheng Yang1, Bangren Zheng1, Guoliang Ding2, Jie Chen3
Affiliations
  • 1.School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
  • 2.School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
  • 3.CNOOC Gas & Power Group Co., Ltd., Beijing, 100028, China
Published: 2025-02-16 doi: 10.12465/j.issn.0253-4339.2025.01.101
Outline
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The two-phase flow pattern of hydrocarbon working fluids on the shell side of a helically baffled heat exchanger for liquefied natural gas determines its heat transfer performance. This study tested the two-phase flow patterns of propane and ethane/propane mixtures on the shell side of a helically baffled heat exchanger using a visualization experimental method. The test results demonstrated that with the increase in vapor quality, the experimental observations sequentially included stratified flow, stratified-spray flow, and spray flow; as the mass flux of propane increased from 20 kg/(m2·s) to 40 kg/(m2·s), the transition vapor quality from stratified flow to stratified-spray flow decreased from 0.7 to 0.3, while the transition vapor quality from stratified-spray flow to spray flow decreased from approximately 1 to 0.7; when the proportion of ethane increased from 0 to 50%, the transition vapor quality from stratified flow to stratified-spray flow increased from 0.30-0.45 to 0.43-0.55, while the transition vapor quality from stratified-spray flow to spray flow increased from 0.69-0.85 to 0.83-close to 1. The existing flow pattern map for water-air mixtures was inadequate for predicting the flow patterns of hydrocarbon working fluids. A new set of flow pattern transition criteria was established with prediction deviations of approximately 6.5%, 5.5%, and 4.2% for the experimental stratified flow, stratified-spray flow, and spray flow, respectively.

Guocheng Yang, Bangren Zheng, Guoliang Ding, Jie Chen. Experimental Investigation on Two-Phase Flow Pattern of Hydrocarbon Refrigerants in the Shell Side of a Helically Baffled Shell and Tube Heat Exchanger[J]. Journal of Refrigeration, 2025 , 46 (1) : 101 -107 . DOI: 10.12465/j.issn.0253-4339.2025.01.101
Funding
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  • National Natural Science Foundation of China(52104067)
Appendix
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Year 2025 volume 46 Issue 1
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Article Info
doi: 10.12465/j.issn.0253-4339.2025.01.101
  • Receive Date：2023-09-17
  • Online Date：2026-03-13
  • Published：2025-02-16
Article Data
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History
  • Received：2023-09-17
  • Revised：2023-11-30
  • Accepted：2023-12-12
Funding
National Natural Science Foundation of China(52104067)
Affiliations
    1.School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
    2.School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
    3.CNOOC Gas & Power Group Co., Ltd., Beijing, 100028, China

Corresponding:

Ding Guoliang, male, professor, School of Mechanical Engineering, Shanghai Jiao Tong University, 86-13386006116, E-mail: . Research fields: simulation and intelligent control of refrigeration and air conditioning units, thermal management of new energy vehicles and energy storage systems, simulation and optimal design of liquefied natural gas systems.
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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