CO_(2)双温压缩/喷射空调系统性能研究  

Performance Study on CO_(2) Dual Temperature Compression/Ejection Air Conditioning System

作　　者：宋海 樊明敬 宁前 蔡德华[1] 何国庚[1] SONG Hai;FAN Mingjing;NING Qian;CAI Dehua;HE Guogeng(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China;Qingdao Haier Air-conditioner Gen.Co.Ltd.,Qingdao 266100,Shandong,China)

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074 [2]青岛海尔空调器有限总公司,山东青岛266100

出　　处：《制冷技术》2024年第5期16-20,共5页Chinese Journal of Refrigeration Technology

摘　　要：本文将温湿度独立控制技术应用于CO_(2)双温压缩/喷射空调系统,建立热力学模型对空调系统降温除湿过程进行理论计算,研究了双温蒸发器制冷负荷比对系统引射比和能效比的影响,并与常规双温空调系统进行性能比较分析。结果表明:在设计工况下,CO_(2)双温压缩/喷射空调系统总制冷量5.837kW,系统除湿量1.99kg/h,系统能效比达到4.08;随着制冷负荷比的增加,系统的引射比减小,能效比提高。在制冷负荷比为5时,系统引射比为0.127,系统能效比可达到5.324;相比常规双温空调,在低温蒸发温度5~15℃范围内,系统能效比提高27.2%~31.12%。在设计工况下,系统能效比可提升28.91%。In this paper,the temperature and humidity independent control technology is applied to CO_(2) dual-evaporator compression/ejection air conditioning system.A thermodynamic model is developed to investigate performance of the air conditioning system in cooling and dehumidification.The influence of cooling capacity ratio on the entrainment ratio and energy efficiency of the system is studied,and a comparative study of the air conditioning system with a conventional dual-evaporator air conditioning system is conducted in terms of energy efficiency.The results show that under the design condition,the total cooling capacity of CO_(2) dual-evaporator compression/ejection air conditioning system is 5.837 kW,the dehumidification capacity is 1.99 kg/h,and energy efficiency ratio can reach 4.08.With the increase of cooling capacity ratio,entrainment ratio of the system decreases and energy efficiency increases.When cooling capacity ratio is 5,the entrainment ratio is 0.127,and energy efficiency ratio can reach 5.324.Compared with conventional dual-evaporator air conditioning,energy efficiency ratio of the system is increased by 27.2%-31.12%when low temperature evaporation temperature is in the range of 5-15℃.Under the design condition,energy efficiency ratio can be improved by 28.91%.

关 键 词：CO_(2) 压缩/喷射空调 温湿度独立控制技术 

分 类 号：TB611[一般工业技术—制冷工程] TU831[建筑科学—供热、供燃气、通风及空调工程]