摘要
制冷剂作为三联供系统的核心工质,适量的制冷剂充注量可提升能效比与制冷效果,确保系统稳定运行,而充注量不当则导致能效下降,制冷效果减弱,缩短系统寿命。本实验选取三联供空调机组夏季制冷模式,以机组的制冷剂充注量为控制参数,分析不同制冷剂充注量对空调能效比、制冷量、机组输入功率等性能参数的影响,对比压缩机的吸气压力与排气压力、系统过热度、电子阀膨胀阀开度的波动情况。结果表明:三联供空调机组在夏季制冷模式下的最佳制冷剂充注量为2200g,制冷能效达到最大值,过热度达到最小值8.5℃,电子膨胀阀开度为110步左右,可达到提升系统能效、优化运行成本及促进绿色节能的目标。
As the core working fluid in the tri-generation system,an appropriate refrigerant charge can enhance the energy efficiency ratio(EER)and cooling effect,ensuring high stability of the system.However,improper refrigerant charge can lead to reduced energy efficiency,weakened cooling effect,and shortened system lifespan.This experiment selects the summer cooling mode of a tri-generation air-conditioning unit,with the refrigerant charge of the unit as the control parameter.It analyzes the impact of different refrigerant charges on performance parameters such as the EER,cooling capacity,and input power of the unit.Comparisons are made regarding fluctuations in the compressor's suction and discharge pressures,system superheat,and the opening of the electronic expansion valve.The results indicate that the optimal refrigerant charge for the tri-generation air-conditioning unit in summer cooling mode is 2200g,achieving the maximum cooling energy efficiency with a minimum superheat of 8.5℃ and an electronic expansion valve opening of approximately 110 steps.This can enhance system energy efficiency,optimize operating costs,and promote green energy conservation goals.
作者
刘雅楠
王珂
朱鸿运
杨涛
LIU Yanan;WANG Ke;ZHU Hongyun;YANG Tao(College of Energy and Intelligent Engineering,Henan University of Animal Husbandry and Economy,Zhengzhou 450046,China;Missfresh Food Company Limited,Zhengzhou,450044,China)
出处
《制冷》
2025年第4期41-44,共4页
Refrigeration
关键词
制冷剂充注量
三联供空调机组
系统能耗
稳定性
节能高效
Refrigerant Charge Amount
Combined Cooling,Heating,and Hot Water Supply Air Conditioning Unit
System Energy Consumption
System Stability
Energy-saving and High-efficiency
