p i = partial pressure of individual gas (Pa, psi)
Assuming that each gas behaves ideally - the partial pressure for each gas can calculated from the Ideal gas Law as
p i = n 1 R T / V (2)
where
p i = pressure (Pa, psi)
n 1 = the number of moles of the gas
R = universal gas constant (J/(mol K), lb f ft/(lb mol o R), 8.3145 (J/(mol K))
T = absolute temperature (K, o R)
V = volume (m 3 , ft 3 )
If there is 2 moles of gas in 0.005 m 3 volume ( 5 litre ) with temperature 27°C ( 300 K ) - the partial pressure of the gas can be calculated as
p i = (2) ( 8.3145 J/(mol K) ) (300 K) / (0.005 m 3 )
= 997740 Pa
= 997 kPa
Air, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves.
Air in the steam will lower the surface temperatures in heat exchangers - and less heat will be transferred.
The efficiency of the Carnot cycle.
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