I have a calculation question regarding vacuum pumps for the experts here
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I’m a complete beginner and would like to ask how to choose the pump for a vacuum system What are the calculation formulas involved?
The selection of a vacuum pump essentially involves choosing its pumping speed; once the pumping speed is determined, the power required is also fixed, depending on the type of vacuum pump desired (such as water-jet pumps, water-ring pumps, reciprocating pumps, screw pumps, rotary vane pumps, etc.). Here is a simple estimation formula: S = (V/t) × ln(P1/P2). Where: S represents the pumping speed of the vacuum pump, in (L/s); V is the volume of the vacuum chamber, in (L); t is the time required to achieve the desired vacuum level, in (s); P1 is the initial absolute pressure, in (Pa); P2 is the desired absolute pressure, in (Pa)