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Performance optimization of dual‑circulation air dehumidification system
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Chufan ZHANG1, Hui CAI1, Jiange JIAO1, Wenjian CAI2
Fluid Machinery | 2025, 53(3) : 104 - 109
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Fluid Machinery | 2025, 53(3): 104-109
Performance optimization of dual‑circulation air dehumidification system
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Chufan ZHANG1, Hui CAI1, Jiange JIAO1, Wenjian CAI2
Affiliations
  • 1College of Mechanical and Electrical Engineering，China Jiliang University，Hangzhou 310018，China
  • 2School of Information Science and Engineering，Ningbo Institute of Technology，Zhejiang University，Ningbo 315100，China
Published: 2025-03-30 doi: 10.3969/j.issn.1005-0329.2025.03.013
Outline
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This study investigates performance optimization of dual‑circulation air dehumidification system by analyzing compressor operating frequency and electronic expansion valve （EEV） opening configurations. A comprehensive thermodynamic model was developed to correlate EEV openings with critical performance indicators including refrigeration capacity，refrigerant mass flow rate，coefficient of performance （COP），and dehumidification capacity. Experimental validation confirmed the optimal compressor-EEV coordination patterns under specific operating conditions. The results demonstrate that maximum COP values occur at EEV openings of 18%，25%，and 30% corresponding to compressor frequencies of 38，42，and 45 Hz respectively，revealing a monotonically increasing relationship between optimal frequency and valve opening. System optimization achieved a COP enhancement from 0.993 to 1.817 through implementation of 42 Hz compressor operation with 25% EEV opening，representing an 83% efficiency improvement. The established control strategy provides a methodological framework for operational optimization of dual‑circulation air dehumidification system under variable load conditions.

dual‑circulation air dehumidification system  /  electronic expansion valve  /  compressor  /  coefficient of performance
张楚烦, 蔡慧, 焦建格, 蔡文剑. 双循环除湿机系统性能优化. 流体机械, 2025 , 53 (3) : 104 -109 . DOI: 10.3969/j.issn.1005-0329.2025.03.013
Chufan ZHANG, Hui CAI, Jiange JIAO, Wenjian CAI. Performance optimization of dual‑circulation air dehumidification system[J]. Fluid Machinery, 2025 , 53 (3) : 104 -109 . DOI: 10.3969/j.issn.1005-0329.2025.03.013
Appendix
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Year 2025 volume 53 Issue 3
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Article Info
doi: 10.3969/j.issn.1005-0329.2025.03.013
  • Receive Date：2024-06-20
  • Online Date：2026-10-20
  • Published：2025-03-30
Article Data
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History
  • Received：2024-06-20
  • Revised：2024-11-27
Affiliations
    1College of Mechanical and Electrical Engineering，China Jiliang University，Hangzhou 310018，China
    2School of Information Science and Engineering，Ningbo Institute of Technology，Zhejiang University，Ningbo 315100，China
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https://castjournals.cast.org.cn/joweb/ltjx/EN/10.3969/j.issn.1005-0329.2025.03.013
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