FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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Air enters a diffuser at 50 kPa, 85°C with a velocity of 250 m/s. The exit pressure is atmospheric at 101 kPa. The exit temperature is 110°C. The diameter at the inlet is 8 cm.a. Find the exit velocity.b. Find the diameter at the exit.Note: Assume constant specific heats.
4.17.) The volume of a compressible fluid system changes from V, = 1 ft³ to V2 = 5 ft3 during
an internally reversible process in which the pressure varies a p = (100/V + 50) psia when V is in
ft3. (a) For the process find -S Vdp and SpdV. (b) If the process is steady flow with AK = 5 Btu,
AP = -2 Btu and AH = 120 Btu, find the work and heat. (c) If the process is nonflow, find W, Q
and AU.
(b) Velocity ratio of a machine is 72. The law of machine is P=1/48 W+30 N. Find the
maximum MA, efficiency and state whether machine is reversible.
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