>> Chemical Engineering
1. Irreversible Expansion of Ideal Gas
Repeat the previous example treating steam as an ideal gas. Is the ideal-gas assumption appropriate?
2. Irreversible Expansion Against Pressure
An insulated cylinder fitted with a weightless latched piston contains steam at 5 bar, 300 °C. The piston is unlatched and the steam expands against ambient air at P = 1 bar. The temperature of steam in the final state is 142 °C. Determine the energy balance for this process.