PUMP的数据里面有个缩写:NPSH是什么意思啊? NPSH 汽蚀余量 指保证被送液体进入泵后仍为液态,泵入口液体应具有的压头。至少为泵送温度下,被送液体的饱和蒸气压,需再增加的附加压头。此附加压头的数值取决于泵入口部分的阻力,由泵装置系统的安装条件实现。单位为米。 补充2楼: NPSH = P0 + H − Y − Vt, where, P0=PRESSURE inside the source tank,(to be solved with coherent measuring units), Y is the friction loss between the free surface of source of tank and pump center line, Vt the liquid vapour pressure at the actual temperature at which the pump is handling fluid. [ ]查看更多12个回答 . 2人已关注