Chapter 7, Problem 7.124EP

Problem 2: A turbine accepts steam at 3000kPa and 800 °C and leaves at 100 kPa with a quality of 30%. If the Criss flow rate is 5 he's determine the power puput. (Neelect kinetic & potential energy changes. Neglect heat kg/s

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Q4 a- The pressure inlet for air compressor is 14 psi ,60 F and the output of 140 psi at 1080 R .This output passes through a cooler of constant pressure .if the exit air out of cooler is 540R find the specific work and specific heat of this compressor .use the table below in case.

o At the inlet to a certain nozzle, the enthalpy of the gas is 3000 kJ/kg and velocity is negligible. At the discharge end of the nozzle, the enthalpy is 2762 kJ/kg. The nozzle is horizontal and flow through the nozzle is adiabatic find the velocity of gas at the nozzle exit.

A hot water boiler heats 2,800 lb/hr of water from 50oF  to 220oF, at 40 psia.  How much heat is added to water?

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35 220 B/s ll Water at 10 MPa aand 200°C expands through a throttle valve to a final pressure of 0.5 MPa, the enthalpy does not change because the process is assumed to be adiabatic and no shaft work is done. What is the final state of water?

Steam to a turbine at a mass flow rate of 1.4 kg/s, 700 kPa pressure and 400 °C enters the temperature. Steam at 100 kPa pressure and 1.4 m3/kg specific volume exits the turbine. Heat transfer from turbine to environment 50 kW, with turbine Since the boundary temperature between the environment is 70 °C, a) Find the power produced by the turbine, entropy produced in the turbine and isentropic efficiency of the turbine. Note: The changes in kinetic and potential energies will be neglected and T (K) = 273 + °C will be taken.