Regarding the evacuation by a bottom-reduction pump
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Pressure relief system – I wonder if fellow sailors have heard of the saying \"leaks steam but not oil, leaks oil but not steam\"? If so, what is the basis for such a claim?
Could some expert in atmospheric and vacuum distillation give some guidance?
The concept of evacuating a tank using a bottom suction pump and the claim that \"steam can leak out but oil cannot, and oil can leak out but steam cannot\" are completely unrelated to each other
Could an expert explain what this phrase means? Thank you!
I’ve never heard of it. My personal understanding is that “air leakage” refers to air entering the pressure reduction system; in such a case, no oil will leak out, but air leakage can affect the vacuum level. “\"Oil leakage\" indicates that the area is under positive pressure or slight negative pressure; when oil leaks out, no air can enter, so oil leakage has little impact on the vacuum level.