MECHENG 235 Study Guide - Midterm Guide: Ua1 Experiment, Joule, Ulm School Of Design

• School: U of M
• Department: Mechanical Engineering
• Course: MECHENG 235
• Professor: Donald Siegel

Document Summary

Me 235 exam i , oct. 20, 2010. It is connected to a piston cylinder with a constant piston float pressure of 200 kpa initially with 0. 5 kg water at 400 c. B: (30 points) a rigid tank contains 0. 2 kg air at 300 k, 100 kpa and connected to a piston/cylinder with 0. 1 kg air at 2000 k, 200 kpa through a pipe with a valve. The piston keeps constant pressure and now the valve is opened and all the air come to a single uniform state. Assume we cool the system until the piston hits the bottom of the cylinder. Do not use constant specific heats. (a) find the final pressure and final temperature of the air. (b) find the work (c) find the heat transfer. Me 230 exam i solution, oct 20, 2010. Solution: (a) b. 6. 2 at 1000 kpa, 120 k: v = 0. 03117 m3/kg; a. 5: r = 0. 2968 kj/kgk.