Problems

Spring 2021  

Thermodynamics - 2

One-half kilogram of propane initially at 4 bar, 30oC undergoes a process to 14 bar, 100oC while being rapidly compressed in a piston-cylinder assembly. Heat transfer with the surroundings at 20oC occurs through a thin wall. The net work is measured as -72.5 kJ. Kinetic and potential energy effects can be ignored. a) What is the heat transfer for this process? (30 points)

b) Is it possible for the work measurement to be correct? (40 points)

c) What is the minimum work required to perform this process? (30 points)

Propane - Superheated Tables

Problems

Spring 2021  

Propane – Saturation Tables