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Superheated steam at 8 MPa and 480oC leaves the steam generator of a vapor power plant. Heat transfer and frictional effects in the line connecting the steam generator and the turbine reduce the pressure and temperature at the turbine inlet to 7.6 MPa and 440oC respectively. The pressure at the exit of the turbine is 10 kPa, and the turbine operates adiabatically. Liquid leaves the condenser at 8 kPa, 36oC. The pressure is increased to 8.6 MPa across the pump. The turbine and pump isentropic efficiencies are 88%. The mass flow rate of steam is 79.53 kg/s. Determine the net power output, the thermal efficiency, the rate of heat transfer from the line connecting the steam generator and the tyrbine, the mass flow rate of condenser cooling water, if the cooling water enters at 15oC and exits at 35oC, with negligible pressure change.
Determine the stress in a stay at a given temperature. A steel 'stay' of effective length 5m is fitted in between the walls of a ships refrigerated compartment when the temperature is 18 degrees centigrade.
steam at 140 lbfin2 1000degf enters an insulated turbine operating at steady state with a mass flow rate of 3.24 lbs
a packed bed is composed of crushed rock with a density of 175 lbmft3nbspof such anbspsize and shape that the average
consider a flash chamber operating at steady state as shown in the figure below. refrigerant 134a enters the chamber at
two moles of nitrogen are initially at 10 bar and 600 k state 1 in a horizontal pistoncylinder device. they are
consider uniform potential flow past an ellipse with thickness ratio t. use an appropriate joukowski transformation to
a pulley with diameter d 27in weighs 80 lb. it is mounted on a diameter d 2-in axle. a weight of 1000 lb is to be
air flows through an adiabatic internally reversible compressor at a rate of 0.04 kgs. at the inlet thepressure is 200
air is cooled and dehumidified as it flows over the coils of a refrigeration system at 1atm from 25degc and a humidity
consider steady two dimensional heat transfer in a square cross section 3cm x 3cm with the prescribed temperatures at
The wheel of a crane lift is rolling on a flat rail. The radius of the wheel is 4 in, the contact length and force are 2.5 in and 1 ton respectively, and E = 30 MPa and ν = 0.3 for both parts. Determine (a) the maximum contact pressure, (b) the wi..
superheated water vapor enters and insulated turbine operating at steady state at 20 bar and 400 degc and exits at 1.5
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