Exam 2 Problems with Solutions | Thermodynamics | ME 3322, Exams of Thermodynamics

Download Exam 2 Problems with Solutions | Thermodynamics | ME 3322 and more Exams Thermodynamics in PDF only on Docsity! ME 3322 SECTION E EXAMINATION #2 October 24, 2006 1 Hour You may bring into the exam one 8-1/2 x 11 sheet of papet and a calculator. Show all of your work. Write clearly and box your answers. Start each problem on a new sheet of Paper. Put your name on every sheet you tutn in. You are responsible for presenting your work so that it is readily understood. Do not interpolate. Name (print) On my honor, I pledge that I have neither given nor received inappropriate aid in this examination. Signature Problem 1 (55 points) Air enters a compressor at ambient conditions of P, =100 kPaand 7, = 25°C with a negligible velocity. It exits at conditions p, =1 MPa and Tf, = 347°C with a velocity of 90 m/s. The compressor is cooled at a rate of 1500 kJ/min. The power input is 250 kW. The gas constant is R=287 J/kg-K. The specific heat is not constant. i.(5 points) Draw the process 1-2 on a T-v diagram. ii. (40 points) Find the mass flow rate of air through the compressor. iti. (10 points) Find the volumetric flow rate of air at the inlet,