Conversion between standard gas conditions and operating conditions
Thread Content
If the operating pressure increases, does the volume at standard conditions increase or decrease? If the compressibility factor is considered, is it a decimal?
Just look at the gas state equation and you’ll understand. For a given mass of gas, assuming the temperature remains constant, the greater the pressure, the smaller the volume.
Surely, the higher the pressure, the more difficult it is to compress. It seems that when using standard conditions flow rates for measurement, an ideal gas assumption is applied; I’m not sure if this is correct
Your way of phrasing this question doesn’t seem quite accurate! A certain amount of gas under standard conditions maintains a constant mass regardless of changes in pressure or temperature; it is only the volume and density under those conditions that change ； As pressure increases, the volume of the system decreases; as temperature rises, the volume of the system increases. However, the calculated standard volume remains the same in both cases.
The compressibility factor is related to the specific pressure as well as the specific temperature. You can compare the gas critical data with actual data and use a chart to determine the compression factor~~:(
Just plug in the formula and it will be clear: P1*V1/T1=P2*V2/T2. Note that the pressure here is absolute pressure and the temperature is absolute temperature; as long as the units are consistent, it’s fine
Consider it using the ideal gas law.