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Jay167
I run a vacuum distillation unit that is used to distill ethylene glycol. The old glycol is subjected to 25Hg of vacuum at a temp of 275 degrees F. There are burner tubes submerged in the glycol to heat it up. The vessel has a diameter of 36 inches and is 124 inches long. We fill the vessel half full, 18-20 inches high, heat it under vacuum and collect the evaporation. The new set up has us filling the vessel to 31 inches high. I stated that the lower surface area would make it so we are collecting evaporation at a slower rate. Am I right? Is there a formula I can use to prove my assumption. Thanks