What role does the pumping capacity of a vacuum pump play in its selection?
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What role does the pumping capacity of a vacuum pump play in its selection? Is it related to the total volume of the vacuum system?
The air volume of a vacuum pump is similar to the flow rate of a water pump; the size of this air volume determines the amount of work done by the pump
Try to choose an exhaust volume that is suitable for the working vacuum level
Gas extraction rate: the mass flow rate of gas passing through the pump inlet per unit time, typically expressed in terms of equivalent non-condensable gas (dry gas volume) and equivalent condensable gas, with the unit being kg/hr. The dry gas volume is mainly related to leaks in the equipment and pumps, such as at flanges and welds, as well as gases entrained in the medium. Condensable vapor mainly refers to the condensable stripping due to the evaporation of the medium, as well as water vapor injected by pumps. The exhaust volume is related to the total volume, but the relationship is not strong. Please don’t be offended if what I said is wrong
The pumping volume reflects the vacuum pump’s ability to remove gas, and thus it also indicates the pump’s efficiency. Therefore, the appropriate value for the pumping volume should be chosen based on the requirements of your vacuum chamber and the desired level of vacuum.