An insulated rigid tank of 1.5 m3 of air with a pressure of 6 bar and 100°C discharges air into the atmosphere which is at 1 bar through a discharge pipe till its pressure becomes 1 bar.
(1) Calculate the velocity of air in the discharge pipe.
(2) Evaluate the work that can be obtained from the frictionless turbine using kinetic energy of that air.
Given data:
Q = 0 (insulated tank)
V1 = V2 = 1.5 m3 (rigid tank)
p1 = 6 bar = 600 kPa
T1 = 100°C = 100 + 273 = 373 K
p2 = 1 bar = 100 kPa
Solution:
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