吸排气压力对线性压缩机性能影响分析  

ANALYSIS OF THE IMPACT OF SUCTION AND DISCHARGE PRESSURE ON PERFORMANCES OF LINEAR COMPRESSOR

作　　者：谢英柏[1] 徐周璇[1] 俞准[1] 孙刚磊[1] 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,河北保定071003

出　　处：《工程热物理学报》2009年第3期361-364,共4页Journal of Engineering Thermophysics

基　　金：教育部重大项目(No.306004)

摘　　要：线性压缩机由直线电机驱动,整机效率高。其性能不仅受电机驱动力的影响,还受到压缩机吸排气压力的影响。本文以R134a为工质,在标准工况下,分析了吸排气压力对动圈式线性压缩机的性能影响。在其他参数不变时,提高吸气压力使制冷量和排气量增加,但电功率也增加,导致性能系数(COP)下降,压缩机性能反而降低;排气压力的增加使压缩机运行经济性变差,另外还会造成压缩机行程的减少,并可能发生行程漂移。Linear compressor is driven by a linear motor, which has higher whole unit efficiency. The performances of the linear compressor are not only affected by the driving force of the motor, but also by the suction and discharge pressure. For the moving coil linear compressor takes R134a as the refrigerant, impact of suction and discharge pressure on the performances is processed under the standard conditions. With other parameters unchanged, elevation of suction pressure will increase the refrigerating capacity and. the displacement. But the electric power input is also increased, which results in the drop of coefficient of performance of the linear compressor and reduce its performance. The increasing of the discharge pressure will make the operational efficiency of the linear compressor worse; moreover, it will shorten the stroke in the compressor, which may cause the stroke deviation.

关 键 词：线性压缩机 吸气压力 排气压力 性能 

分 类 号：TB652[一般工业技术—制冷工程]