油黏度对单螺杆膨胀机压力损失的对比实验分析  

Comparative Experimental Analysis of Oil Viscosity on Pressure Loss of Single Screw Expander

作　　者：宋晓锋 吴玉庭[1] 智瑞平[1] 沈丽丽 王伟[1] 雷标[1] 马重芳[1] SONG Xiaofeng;WU Yuting;ZHI Ruiping;SHEN Lili;WANG Wei;LEI Biao;MA Chongfang(Faculty of Environment and Life,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学环境与生命学部,北京100124

出　　处：《北京工业大学学报》2024年第7期777-787,共11页Journal of Beijing University of Technology

基　　金：北京市自然科学基金资助项目(3202006)。

摘　　要：膨胀机性能对压缩空气储能系统的影响已被广泛研究。然而,仅有少数研究是集中于不可逆损失的影响,尤其是压力损失对膨胀机性能的影响往往被忽略。润滑油的加入可以达到改善压力损失的目的,为了阐明润滑油对压力损失的影响关系,以压缩空气为工作介质,采用6种不同运动黏度的润滑油对3台不同结构参数的单螺杆膨胀机在不同运行条件下进行了对比实验研究。结果表明,提高润滑油的运动黏度可以大幅减小压力损失及占比以及有效降低压力能量损失对轴效率的影响率。相反,虽然提高润滑油的运动黏度可以在一定程度上有效提高轴效率,但两者之间并不存在正比关系。The influence of expander performance on compressed air energy storage(CAES)system has been widely studied.However,only a few researches focus on the effect of irreversible loss,and especially the influence of pressure loss on expander performance is often neglected.The addition of lubrication oil has a marked influence on the pressure loss.To clarify the influence of the lubrication oil on pressure loss of single screw expander(SSE),a comparative experiment was undertaken to investigate six different viscosity lubrication oils(10#,22#,32#,46#,68#,and 80#)under different operating conditions.Results show that pressure loss,proportion(Δpin,Δpout,PLRin,and PLRout),and pressure energy loss influence rate of shaft efficiency(PELRe)can be significantly reduced by increasing kinematic viscosity of lubrication oil.In contrast,although the shaft efficiency can be effectively improved to a certain extent by increasing kinematic viscosity of lubrication oil,there is no positive relationship between them.

关 键 词：压缩空气储能 单螺杆膨胀机 润滑油 运动黏度 压力损失 对比分析 

分 类 号：TB653[一般工业技术—制冷工程]