DEVELOPMENT AND PERFORMANCE ANALYSIS OF EXTERNALLY CONTROLLED VARIABLE DISPLACEMENT COMPRESSOR FOR AUTOMOTIVE AIR CONDITIONING
In this paper, an external control valve driven with a pulse motor and externally controlled variable displacement compressor (VDC) are developed, and numerical analysis and experimental investigation are made then. The mathematical model of this external control valve is developed firstly based on the force balance equation, mass and energy conservation equation, and a test bench for external control valve is established in order to verify its mathematical model. With the mathematical model of the externally controlled VDC, its change rule of piston stroke length (PSL) and refrigerant mass flow rate is simulated then. The simulation results show that there is a hysteresis zone and multiple-valued relationship between the compressor parameters when PSL changes due to the frictional forces among the moving components of VDC. Finally, the transient responses of PSL and refrigerant mass flow rate along with the sudden change of the opening of external control valve and compressor rotary speed are investigated experimentally. The transient process of VDC can be ignored compared to the transient response of evaporator or condenser.
C.TIAN W.SHI X.LI Q.YAN
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences,Bei Yi Tiao 2, Zhong Guan Department of Building Science, Tsinghua University, Beijing 100084, P.R.China
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）