Parameters in the calculation of safety valves
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In the regulations, on page 99 regarding the formula for calculating the discharge capacity of safety valves, I don’t know how to determine the relevant parameters: Z is the compression coefficient of the gas under operating conditions (for example, for vapors, the pressure is 1.3PMA); k is the adiabatic coefficient of the gas, Cp/Cv – how can this be determined?； M--Which table to use for the molar mass of vapor? How to determine the size of the safety valve after calculation.
There is a book titled “Tables and Charts of Thermophysical Properties of Refrigerant Substances” in which the relevant parameters can be found. To determine the size of the safety valve, simply follow the steps outlined in the relevant regulations step by step!
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