Engineering, 16.04.2020 21:24 mazielynn84
4. Superheated steam at 20 MPa, 560 C enters the turbine of a vapor power plant. The pressure at the exit of the turbine is 0.5 bar, and liquid leaves the condenser at 0.4 bar at 75 C. The pressure in increase to 20.1 MPa across the pump. The turbine and pump have isentropic efficiencies of 81% and 85% respectively. Cooling water enters the condenser at 20 C with a mass flow rate of 70.7 kg/s and exits the condenser at 38 C. For the cycle, determine (a) the mass flow rate of steam, in kg/s, and (b) the thermal efficiency of the power plant.
Answers: 2
Engineering, 04.07.2019 18:10
What difference(s) did you notice using a pneumatic circuit over hydraulic circuit.explain why the pneumatic piston stumbles when it hits an obstacle.
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Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
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Engineering, 04.07.2019 18:10
Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.
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Engineering, 04.07.2019 18:20
Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false
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4. Superheated steam at 20 MPa, 560 C enters the turbine of a vapor power plant. The pressure at the...
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