双循环除湿机系统性能优化  

Performance optimization of dual‑circulation air dehumidification system

作　　者：张楚烦 蔡慧 焦建格 蔡文剑 ZHANG Chufan;CAI Hui;JIAO Jiange;CAI Wenjian(College of Mechanical and Electrical Engineering,China Jiliang University,Hangzhou 310018,China;School of Information Science and Engineering,Ningbo Institute of Technology,Zhejiang University,Ningbo 315100,China)

机构地区：[1]中国计量大学机电工程学院,杭州310018 [2]浙大宁波理工学院信息科学与工程学院,浙江宁波315100

出　　处：《流体机械》2025年第3期104-109,共6页Fluid Machinery

基　　金：浙江省自然科学基金联合基金项目(LZJWY24E090001)。

摘　　要：为了优化双循环除湿机系统性能,以压缩机运行频率为切入点,探究双循环除湿机在不同电子膨胀阀开度下的系统运行状况。研究建立了电子膨胀阀开度与系统制冷量、冷媒质量流量、系统能效比以及除湿量的理论模型,并验证了特定开度下系统达到最佳能效比时对应的压缩机运行频率。结果表明,当压缩机运行频率分别为38,42,45 Hz时,对应最佳能效比的电子膨胀阀开度分别为18%,25%,30%,系统能效比达到最高时,压缩机运行频率与膨胀阀开度呈正相关趋势;优化前,双循环除湿机系统能效比为0.993;优化后,将电子膨胀阀开度设置为25%、压缩机频率设置为42 Hz时,系统能效比可达1.817。本研究结果为同类型双循环除湿机提供了一种控制思路,有助于有效提升系统性能。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.

关 键 词：双循环除湿机 电子膨胀阀 压缩机 能效比 

分 类 号：TB653[一般工业技术—制冷工程] TH45[机械工程—机械制造及自动化]