Selection of vacuum pumps

2021-01-30View Original

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This post was last edited by pea on 2021-2-2 16:42: ’(Seeking help; a beginner wants to ask questions regarding the selection of vacuum pumps. Now, it is necessary to evacuate and dehydrate a reactor with a temperature of 80°C and a volume of 500 L. It is known that the evacuation process should take 10 minutes, with a desired vacuum level of -0.1 Mpa. How should the vacuum pump system be selected? S=2.303V/t×log(P1/P2). How should the initial vacuum level be set in this formula?

Reply #22021-02-01

Vacuum level is calculated using absolute pressure. P1 is atmospheric pressure, 101325 ； p2 needs to specify the exact value in absolute pressure.

Reply #32021-02-02

Is 500L per minute or per second? The vacuum level of -0.1 MPA is problematic; the vacuum level can’t be zero. Do you know what its operating vacuum level is?

Reply #42021-02-02

Okay, thank you. :handshake

Reply #52021-02-02

Understood, thank you:handshake

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Selection of vacuum pumps

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