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Title: Determination And Application Of Supercompressibility Factors
Author: C. m. Carter
Source: 1950 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1950
Abstract: Engineers who have had to calculate volumes of gases have come to recognize that no gas obeys exactly Boyles Law which in its simplest form is: PV P,V, All known gases that are collected under pressure show deviations in either direction and in various amounts from the above simple statement. Those with which the engineers of our industry have to deal are usually more compressible than the law states and hence a factor greater than unity has to be applied to the calculated volumes on re-expansion to arrive at a fair measurement of the amounts delivered. It will help in our thinking if a kind of down-to-earth analogy is used about the problem such as: When you empty a container filled with natural gas under pressure, you will find that the amount of gas you take out of the container is greater than the amount the law stated was in there. And conversely:

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