油によるブースターの特性の変化

抄録

Influences of the various pumping fluids on the operating performance of 8″ ejector booster type vacuum pump are examined.
The fluids used are diethylphthalate, dibutylphthalate and hydrocarbon oil (mean molecular weight=250). Another combined factors, i. e. diameter of throttle, heat input, foreside pressure are also changed together.
The authors have gotten some effective informations with these three pumping fluids about the relations between evacuating speed and heat input, boiler pressure and heat input, boiler temperature and heat input respectively.