ME 56300 Study Guide - Ideal Gas, Mass Balance, Thermodynamics
30 Oct 2014
School
Department
Course
Professor
Document Summary
Known: air is admitted slowly into an insulated tank until the volume of the air inside tank is doubled. Find: plot the final temperature, k, and mass, kg, of the air inside the cylinder for supply temperature ranging from 300 to 500 k. Engineering model and assumptions: for the control volume shown, qcv=0, neglect: (a) weight of the piston, (b) friction between the piston and cylinder wall, (c) leakage, (d) ke and pe, ideal gas assumption for the air. Since supply pipe inlet conditions don"t change, (1) Solve equations 2 and 3 for 300 tsupply 500k. (3) (2) Known: a well-insulated piston-cylinder assembly is connected to air supply through a valve. Initial conditions p1, t1, spring force f1=kx(=0) and v1 (=0. 22 ft3) are known. Find: plot final pressure, p2, lbf/in2, temperature t2, of versus spring constant k for 650 k 750 lbf/ft.
