Answer to Question #115770 in Mechanical Engineering for Smith

Question

A closed tank contains 100 lbs of air at a pressure of 200 psia and a temperaure of 180 0F. The air is subsequently cooled to 80 0F. Find the: a.) the initial specific volume, ft3/lbm; b.) the volume of the tank, ft3; c.) the final specific volume, ft3/lbm; d.) the final pressure, psia.

Answer 1

Pressure= 200 psia, Air present =100 lbs,

(a) Specific Volume,

/lbm

(b)

Volume of the tank ,

V=

(c) for the final specific volume

(d)

Final pressure

P2=333.33 psia