Steam enters a turbine at 15bar and 600°C with a rate of 0.371 kg/s. Thesteam expands to 0.08 bar with quality at 90%.Stray heat transfer and kinetic and potential energy effects are negligible.For operation at steady state,• the volume flowrate at the turbine outlet ism³/s,⚫the power developed by the turbine is⚫and the temperature at the turbine exit iskW,°C.

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Answered: Steam enters a turbine at 15bar and…

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter15: Geothermal Energy

Section: Chapter Questions

Problem 1P

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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.
A steam power plant operates on the ideal Rankine cycle. The steam enters the turbine at 7 MPa and 550°C. It discharges to the condenser at 20 kPa. Determine a.) The heat transfer to the water in the steam generator in kJ/kg, b.) The net cycle work in kJ/kg, c.) The cycle thermal efficiency in %.
a cylinder of 0.9 m cube in volume contains air at 0°c and 39.24n/cm^2 absolute pressure. the air is compressed to 0.45 m^3.find(1) the pressure inside the cylinder as a isothermal process, (2)pressure and temperature assuming adiabatic process . take k=1.4 for air.
A 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…
A certain fluid has an enthalpy 1800 KJ/kg and 500 KJ/kg work flow. Find the internal energy.
ENERGY CONSERVATION - BERNOULLI EQUATION. 3. Kerosene flows at 25 ° C, at a rate of 1200 L / min, from the lower tank (A) to the upper tank (B) through a 2 ”copper tube. type K. Calculate the air pressure over the fluid.
Water from a large tank enters into a pipe and discharges to the atmosphere through a nozzle connected at the other end of the pipe. The tip of the nozzle is located 240 m below the water surface in the reservoir. The jet formed at the tip of the nozzle has a diameter of 100 mm and velocity of 60 m/s. Neglecting minor losses, a) Compute the power produced by the jet in hpb) compute the power lost due to friction in the pipe
a constant pressure container (inside the piston-cylinder) with 250 kPa pressureat the beginning the mass of the saturated water vapor was 8 kg. Then the saturated steam in the cylinder compressed to 3/4 of its mass vy cooling.1) what's the amount of heat transferred to the environment.
Water is the working fluid in a Rankine cycle. Steam exits the steam generator at 1500 lbf/in.2 and 1100°F. Due to heat transfer and frictional effects in the line connecting the steam generator and turbine, the pressure and temperature at the turbine inlet are reduced to 1400 lbf/in.2 and 1000°F, respectively. Both the turbine and pump have isentropic efficiencies of 90%. Pressure at the condenser inlet is 2 lbf/ in.2, but due to frictional effects the condensate exits the condenser at a pressure of 1.5 lbf/in.2 and a temperature of 110°F. The condensate is pumped to 1600 lbf/in.2 before entering the steam generator. The net power output of the cycle is 1 x 108 Btu/h. Cooling water experiences a temperature increase from 60°F to 76°F, with negligible pressure drop, as it passes through the condenser.Determine for the cycle:(a) the mass flow rate of steam, in lb/h.(b) the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator.(c) the percent thermal…
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An aluminum pipe has a length of 60 m at a temperature of 10° C. An adjacent steel pipe at the same temperature is 5 mm longer than the aluminum pipe. At what temperature (degrees Celsius) will the aluminum pipe be 15 mm longer than the steel pipe? (Assume that the coefficients of thermal expansion of aluminum and steel are aAL=23x 10^-6°C and as=12x10^-6° C respectively)
Solve the heat equation ut=cuxx on the domaion 0≤x≤2, t>0 subject to u(x,0)=x(x−2), u(0,t)=0,u(2,t)=0

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