Steam in a piston-cylinder assembly undergoes a polytropic process, with n = 2, from an initial state where V₁ = 1.75440 ft³, p₁ = 450 lb/in², and u₁ = 1322.4 Btu/lb to a final state where u₂ = 1036.0 Btu/lb and v₂ = 3.393 ft3/lb. The mass of the steam is 1.0 lb. Changes in kinetic and potential energy can be neglected. Determine the change in volume, in ft3, the energy transfer by work, in Btu, and the energy transfer by heat, in Btu.
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- Prove that k = 1.35 in the problem: The internal energy of a certain ideal gas is given by the expression u = 850 + 0.529 Pv Btu/lb. where P is in psia. Identify the exponent k in the Pvk = C for this gas undergoing in an isentropic process.A gas is compressed under isothermal condition. The change of pressure is from 800 atm. to 803 atm. Calculate change in the density of gas A 0.6% B 1% C 2.5 D 0.375% UAn ideal Rankine cycle with reheat uses water as the working fluid. As shown in the figure below, the conditions at the inlet to the first turbine stage are 1600 lbf/in.2, 1200°F and the steam is reheated to a temperature of T3 = 800°F between the turbine stages at a pressure of P3 = P2 = 200 lbf/in.² Part A Your answer is correct. X4= 0.897 Part B. For a condenser pressure of ps = P4=1 lbf/in.², determine: (a) the quality of the steam at the second-stage turbine exit. (b) the cycle percent thermal efficiency. Reheat section * Your answer is incorrect. Steam generator % PP 1600 thin P= 1600 din² T₁ = 1200°F Determine the cycle percent thermal efficiency. n = 1 39 Pump Ps & Pl T₁ Turbine h6 hs + Us (P6 - Ps)Determine the quality of the steam at the second-stage turbine exit. PS = PA x=0 (saturated liquid) Turbine 2 Pa ww Condenser
- 1. From the given figure shown, the cylinders have equal diameters. a. give the reaction at A b. give the reaction at D c. give the reaction at C 40KN 20KN 30KN D 50 B.0.05 kg of steam at 1.5 MPa is contained in a rigid vessel of volume of 0.0076 m^3. A. What is the temperature of the steam? B. If the vessel is cooled, at what temperature will the steam be just dry and saturated? C. Cooling is continued until the pressure in the vessel is 1.1 MPa, calculate the amount of vapor at this point. D. Calculate the amount of heat rejected between the initial and the final state. E. Draw the Ts diagram of the whole process.CO2 is compressed in a cylinder through an equilibrium process from initial conditions of P1 = 100 kPa and V1 = 0.004 m3, to a final pressure of P2 = 500 kPa. During the process, pV1.22 = constant. Compute the work done.
- Civil Engineering In a steam turbine, steam with the mass flow rate of 201 kg/s enters the turbine al the lemperature of 601°C and the pressure of 16 MPg and exits at the lemperature of 31°C and the quality of 96% Determine the power production in the turbine (in kW), The change in kinetic and potential energies are negligible and the process is steady slate and adlabalic. List all your assumptionsA vapor compression refrigeration cycle uses steam as the working fluid. Steamflows steadily with a mass ow rate of 0.5 kg/s. Saturated vapor at 2.0 o C (State 1) enters an uninsulated compressor and it is compressed to 0.35 bar (State 2). Heat transfer at the rate of 105 kJ/s occurs from the compressor to its surroundings and the heat transfer exactly balances the entropy generation rate so that s2 = s1. The boundary and surrounding temperature of the compressor is measured to be 26.67 o C. Steam exits as saturated liquid at 0.34 bar (State 3) from the condenser. Steam leaving the condenser is then throttled in an expansion valve (State 4) before entering a constant pressure evaporator to complete the thermodynamic cycle. (a) Calculate the power (kJ/s) for the compressor. (b) Determine the isentropic efficiency (%) of the compressor. (c) Calculate the entropy generation for the compressor. (d) Find the coefficient of performance of the refrigeration cycle. (e) Show the cycle on T-s…An aluminum cup of 150 cm3 capacity is completely filled with glycerin at 16°C. How much glycerin will spill out of the cup if the temperature of both the cup and glycerin is increased to 39°C? (The linear expansion coefficient of aluminum is 23 x 10-6 1/CO. The coefficient of volume expansion of glycerin is 5.1 x 104 1/C°) loth prob Number i Units
- 4.10 A solid cylinder of length H, diameter D and of relative density S floats in neutral equilibrium in water with its axis vertical. What is the ratio of H to D if S = 0.6? (a) 0.86 (c) 0.52 (b) 0.72 (d) 0.46Assume an ideal-gas equilibrium holds for the following reaction: SO2 +02 + SO3 Draw a qualitative variation of S03 concentration with temperature.The steel cylinder has a specific weight of 490 l6/ ft° and acts as a plug for the 1 ft long slot in the tank. Yw = ³ 62.4lb/ft Determine the resultant force the bottom of the tank exerts on the cylinder when the water in the tank just covers the top of the cylinder, h = 0. h 0.35 ft LA 0.5 ft