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VACUUM ›› 2025, Vol. 62 ›› Issue (4): 89-96.doi: 10.13385/j.cnki.vacuum.2025.04.16

• Vacuum Technology Application • Previous Articles     Next Articles

Simulation and Optimization of Structure of Air-Cooled Heat Exchange System for Vacuum Equipment

LIU Yuchen1, JIA Shouya2, ZHANG Pengze1   

  1. 1. Shenyang Vacuum Technology Institute Co., Ltd., Shenyang 110042, China;
    2. China Nuclear Power Engineering Co., Ltd., Zhengzhou 450052, China
  • Received:2024-11-25 Online:2025-07-25 Published:2025-07-24

Abstract: Aligning with the development trends of vacuum equipment, the advancement direction for air-cooled heat exchange systems is identified as enhancing heat transfer efficiency and incorporating sediment discharge functionality. This study optimizes the structure of the inlet air duct and the connecting duct between the heat exchanger and the fan through simulation calculations. Flow control calculations were performed to assess the impact of different duct structures on the outlet airflow of the air-cooled heat exchange system, with comparative analyses conducted on parameters such as duct outer wall temperature and outlet air velocity. The results indicate that compared to the traditional right-angle bend, the inlet duct employing a welded elbow and a split-type water-cooled jacket design exhibits increased outlet gas velocity and improved uniformity in wall temperature distribution. Introducing a reduced-diameter (DN100) sediment discharge port with a diversion structure into the connecting duct facilitates pollutant deposition, resulting in more stable gas velocity compared to the structure with an equal-diameter opening. Validation results demonstrate that this novel duct design can reduce pressure drop, decrease flow resistance, and significantly improve heat exchange efficiency.

Key words: air-cooled heat exchange, duct, simulation optimization

CLC Number:  TG232.6;U262.23+2

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