Gas condensation issue?
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These past two days I’ve been troubled by a question: is gas under pressure (for example, gas at 53°C and 0.7 Mpa) more likely to condense compared to gas at 53°C and 0.16 Mpa in a saturated state, or is it not possible for it to condense?
This post was last edited by ylb913 on 2016-8-22 at 19:27. For a gas in a saturated state, with constant temperature, the pressure is increased from 0.16 to 0.7 MPa. Where does the pressure difference of 0.7 – 0.16 = 0.54 MPa come from? What is partial pressure? This is an impossible process.
Isothermal compression should be possible more or less; I mainly want to ask: is it easier to condense compressed gas?
0.16 Mpa is the saturated vapor pressure of the gas; as the pressure increases, a liquid phase appears. The situation described by LZ won’t occur.
According to the given conditions, as long as the temperature is 53°C, the pressure will eventually reach 0.16 MPa; even if the volume is compressed, only a portion of the steam will condense into a liquid phase.