Steam is raised as saturated steam at 6 bar (g) and supplied to the first ( high pressure ) piston. The steam then exhausts from piston 1 at 3 bar (g).
The steam is thought to expand adiabatically in accordance with
PV^( 135 .1)= Constant
Given the initial volume is...
Given T=572 ºF, pressure= 145 psi (g) using the steam tables and ideal gas law
Molar Mass= 18 g/mol for water
Find: Is the water vapour acting ideally?
Ideal Gas Law: PV=nRT
P is the pressure =145 psi (g)
V is the molar volume
R= Ideal gas constant...