Engineering, 23.06.2020 17:01 pc103919
Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa. The Turbine has an isentropic efficiency of 85% and exhausts at 15 kPa. In the condenser, the water is subcooled to 38°C by lake water at 13°C. The pump isentropic efficiency is 75%.
a) Draw and label the T-s diagram for this cycle
b) Determine the cycle’s thermal efficiency
c) Determine the mass flow rate of the steam in the boiler (kg/h)
d) Determine the back-work ratio
e) Determine the minimum required cooling water flow rate if regulations limit the cooling water temperature rise to 10°C (kg/h)
Answers: 2
Engineering, 04.07.2019 18:10
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
Engineering, 04.07.2019 18:10
Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10
Answers: 1
Engineering, 04.07.2019 18:10
Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise
Answers: 3
Engineering, 04.07.2019 18:20
Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above
Answers: 1
Steam leaves the boiler of a 100 MW Rankine cycle power plant at 400°C and 3.5MPa. The Turbine has...
Mathematics, 25.02.2021 22:10
Arts, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10
English, 25.02.2021 22:10
Spanish, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10
Social Studies, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10
History, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10
Physics, 25.02.2021 22:10
Mathematics, 25.02.2021 22:10