摘要
运用模型仿真和试验验证手段对具有典型意义的风冷螺杆热泵机组进行过热度变化对机组性能影响的深入研究,仿真和实验都揭示出过热度变化对制冷系统性能的影响规律。同时试验也表明:样机蒸发器出口过热度从10℃变为2℃时,系统制冷量增加13.4%,COP值增加9.3%,而输入功率只增加4%。可见通过采用电子膨胀阀降低蒸发器出口过热度对系统性能有较大的提高。
Model simulation and experiments are carried out to investigate the effect of superheat degree on the performance of Air Cooled Screw Heat Pump. Both simulative and experimental results reveal the relations between superheat degree and performance characteristics. Furthermore, The experimental result shows that change of superheat degree at the outlet of the evaporator from 10℃ to 2℃ will cause 13.4% increase in cooling capacity and 9.3% increase in COP, but only 4% increase in power consumption. It is easily obtained that using electronic expansion valve to decrease the superheat degree could improve the system performance remarkably.
出处
《流体机械》
CSCD
北大核心
2005年第9期43-47,共5页
Fluid Machinery
关键词
电子膨胀阀
热力膨胀阀
风冷螺杆热泵
过热度
制冷系统
electronic expansion valve
thermal expansion valve
air source heat pump
superheat degree
refrigeration system
作者简介
梁彩华（1979-），男，博士研究生，通讯地址：210096江苏南京市东南大学动力工程系。
