Problem 2 A piston-cylinder device contains steam initially at 1 MPa, 450°C, and 3 m³. Steam is allowed to cool at constant pressure until it first starts condensing. Show the process on a 7-v diagram with respect to saturation lines and determine (a) the mass of the steam, (b) the final temperature, and (c) the amount of heat transfer. P₁ = 1 MPa T₁ = 450°C P=const sat vap. Cool √₁ = 3 m³ Steam 1 MPa 450°C 3 m³
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- (a) Glycerine at 25 °C flows through a straight copper tube (D = 73.8 mm), at a flow rate of 180 L/min. Calculate the pressure difference between 2 points which are 25.8 m apart, if the first point is 0.68 m below the second point. Gven: At 25 °C density and dynamic viscosity for glycerine is 1286kg/ and 0.96 Pa.s respectively(b) If benzene at 50 °C is used in question (a) above instead of glycerine, evaluate the new pressure difference. ...plzzzz help meee right nowww plzzz what will be the pressure gradient (kpa/m) at L=30 cm through the nozzle? At L=0, the liquid flows inside the nozzle has a specific gravity S=7.5, at L=0, the velocity is 2 m/s while at L=70 cm, the velocity is 6 m/s. Assume steady and inviscid flow. The velocity varies linearly with distance through the nozzleA vertical circular stack 30 m high converges uniformly from a diameter of 6 m at the bottom and 4.5 m at the top. Gas with a unit weight of 0.12 N per cubic meter enters the bottom of the tank with a uniform velocity of 0.334 m/sec enters the stack. The unit weight increases by 7.5 percent every 2 meters. Find the velocity of flow at every 5 meters along the stack. Graph velocity at the abscissa against height at the ordinate (PLEASE USE COMPLETE SOLUTION AND FIGURES)
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