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对采用毛细管与电子膨胀阀作节流装置的变频空调系统分别建立了毛细管和电子膨胀阀的数学模型和整个空调系统的仿真模型 ,用验证过仿真软件进行数值计算 ,结果表明 ,在设计工况下 ,两个系统的性能接近。若偏离设计工况 ,电子膨胀阀系统的调节特性明显好于毛细管系统。正常工作条件下采用电子膨胀阀的变频空调系统性能平均比采用毛细管的高近 1 0 %。若经常处于变化工况下的变频空调系统 ,采用电子膨胀阀比采用毛细管更节能
The capillary tube and electronic expansion valve mathematical model and the whole air conditioning system simulation model are established respectively for the inverter air conditioner system using capillary tube and electronic expansion valve as throttle device. The numerical simulation results show that, in the design condition Under the two systems close to the performance. If deviate from the design conditions, the regulation of electronic expansion valve system was significantly better than the capillary system. Under normal working conditions, the performance of inverter air conditioner with electronic expansion valve is 10% higher than that of capillary tube. If the frequency of air conditioners are often under varying operating conditions, the use of electronic expansion valve is more energy efficient than the use of capillaries