Regarding the pressure issues of liquefied hydrocarbon storage tanks
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As the title suggests, I’m asking what the pressure would be in a liquefied hydrocarbon storage tank if there is a gas phase space. Is it the saturated vapor pressure at that temperature, or is it higher than that? I personally think it’s higher than the saturated vapor pressure, as I believe the gas phase space is too small to allow for gas-liquid equilibrium; however, others say it’s the saturated vapor pressure. Can anyone explain this from a theoretical perspective?
The filling factor of LPG spheres is less than 0.9, and the pressure in their gas phase space should be the saturated vapor pressure. If the pressure is greater than the saturated vapor pressure, LPG will liquefy; there will be no gas left, and thus no gaseous phase will exist.
But can such a small meteorological space achieve gas-liquid equilibrium?