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Experimental study on external condensation heat transfer performance of 3D finned aluminum tubes
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Yongqiang WU1, Qingxue YUE1, Jiatong JIANG2
Fluid Machinery | 2025, 53(9) : 14 - 20
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Fluid Machinery | 2025, 53(9): 14-20
Experimental study on external condensation heat transfer performance of 3D finned aluminum tubes
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Yongqiang WU1, Qingxue YUE1, Jiatong JIANG2
Affiliations
  • 1GREE Electric Appliances Inc. of Zhuhai，Zhuhai 519070，China
  • 2Institute of Refrigeration and Cryogenics，Shanghai Jiao Tong University，Shanghai 200240，China
Published: 2025-09-30 doi: 10.3969/j.issn.1005-0329.2025.09.003
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To address the commercial demand for replacing copper heat transfer tubes with aluminum tubes in the air conditioning field，a high‑precision single‑tube condensation performance test bench was constructed.Using R134a refrigerant，experimental studies were conducted on the external condensation heat transfer characteristics of ⌀19.05 mm aluminum smooth tubes，aluminum three‑dimensional enhanced （3D） tubes，and copper 3D tubes under varying inlet water temperatures，saturation temperatures，and water flow rates.The condenser performance and cost were compared.The results show that the external condensation heat transfer coefficient of copper 3D tubes is 1.38 times that of aluminum 3D tubes；the external condensation heat transfer coefficient of aluminum 3D tubes is approximately 7.43 times that of aluminum smooth tubes.As the saturation temperature increases，the condensation performance of aluminum 3D tubes also improves.At the same saturation temperature，the external condensation heat transfer coefficient can be fitted as a function of heat flux.Under a heat exchange capacity of 2 227.7 kW，the cost of copper tube condensers is 3.4 times that of aluminum tube condensers.The research results can provide reference for material substitution studies in commercial air conditioning units.

aluminum tube  /  3D fin  /  condensation  /  performance  /  cost reduction
武永强, 岳清学, 姜佳彤. 三维翅片铝管管外冷凝传热性能试验研究. 流体机械, 2025 , 53 (9) : 14 -20 . DOI: 10.3969/j.issn.1005-0329.2025.09.003
Yongqiang WU, Qingxue YUE, Jiatong JIANG. Experimental study on external condensation heat transfer performance of 3D finned aluminum tubes[J]. Fluid Machinery, 2025 , 53 (9) : 14 -20 . DOI: 10.3969/j.issn.1005-0329.2025.09.003
Appendix
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Year 2025 volume 53 Issue 9
71
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Article Info
doi: 10.3969/j.issn.1005-0329.2025.09.003
  • Receive Date：2025-03-03
  • Online Date：2026-10-20
  • Published：2025-09-30
Article Data
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History
  • Received：2025-03-03
  • Revised：2025-07-20
Affiliations
    1GREE Electric Appliances Inc. of Zhuhai，Zhuhai 519070，China
    2Institute of Refrigeration and Cryogenics，Shanghai Jiao Tong University，Shanghai 200240，China
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https://castjournals.cast.org.cn/joweb/ltjx/EN/10.3969/j.issn.1005-0329.2025.09.003
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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
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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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