Exam 2 with Solutions - Thermodynamics | ENSC 2213, Exams of Thermodynamics

Download Exam 2 with Solutions - Thermodynamics | ENSC 2213 and more Exams Thermodynamics in PDF only on Docsity! ENSC 2213 Thermodynamics NAME _ — EXAM 2 / 10-10-14 (25) Problem I. Each of the parts below is a separate problem. Please look up or calculate the appropriate quantity. You do not have to draw a picture and the system is always the fluid. a) What is the specific enthalpy of propane, in Btu/Ibm, if it has a quality of 0.43 anda pressure of 200 psia? hie 0 42 ~ 19 > . - 7 pz Th . (44. 26 CS oe eee Go b) Carbon dioxide, CO2, changes temperature from 790 K to 300 K, Assuming ideal gas, what is the change in specific enthalpy in kJ/kg? o Ae d) Ifa gas has a reduced pressure of 5 and a reduced temperature of 1.42, what is the value of the compressibility factor? BS Te = AL (25) ENSC 2213 Thermodynamics NAME. EXAM 2/ 10-10-14 Problem 2. Carbon monoxide (CO) gas undergoes a constant pressure process at 69.0 atm in a piston-cylinder assembly from an initial temperature of Ti = -100°F to a final temperature of T2 = -30°F. Determine the work for the process, in Btu, if 5 lbm of carbon monoxide is present. an Systran M = 2¢.61 Yd | Pe 60. 0atn So ” = 2 ~ E | q a ), 506 FEE