Gas Throughput and Conductance

The term gas throughput is defined as a quantity of gas flowing through a given area per unit of time. 

The gas quantity Q corresponds here to the volume (10 of gas occurring per unit of time multiplied with the prevailing pressure p and Eq. (1.29)  

The gas throughput corresponds to an energy passing through an area per unit 

From Eq. (1.28) one then obtains the gas throughput as a mass flow  

The transported gas quantity Q, which flows through a pipe is in the case of a continuous flow dependent on the prevailing pressure difference between inlet and outlet. 

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