The shell of the steam jet pump is cold
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The casing of the low-pressure steam jet pump used for vacuuming in our facility is cold – what’s going on? The induced steam is at 1.0 Mpa and 250 degrees Celsius; it should be quite hot, right?
Is it similar to how gas liquefaction releases heat, while liquid vaporization absorbs heat? I have never come into contact with this type of pump. . . . Moreover, since you are in a vacuum, the heat transfer efficiency should be very poor, so no heat will be generated