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A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam enters the first turbine stage at 12 MPa, 560C and expands to 1 MPa, where some of the steam is extracted and diverted to the open feedwater heater operating at 1 MPa. The remaining steam expands through the second turbine stage to the condenser pressure of 6 kPa. Saturated liquied exits the open feedwater heater at 1 MPa. The net power output for the cycle is 330 MW. Assume that both turbine stages and both pumps have an isentropic efficiecy of 90%. For non-internally reversible processes of the working fluid in the turbines and pumps, determine
a) the cycle thermal efficiency.
b) the mass flow rate into the first stage, in kg/s.
c) the rate of entropy production in the open feedwater heater, in kW/K.
consider laminar parallel flow past an isothermal flat plate of length l providing an average heat transfer coefficient
what is the pressure difference over the manometer in newtons per meter?
If the total heat-transfer rate is to be 300 kW and the average heat-transfer coefficient between the water and the air is 50 W/m2 ·K, calculate the area of the heat exchanger required and the mass rate of air flow through the exchanger.
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By following a systematic procedure and using the linear graph, obtain a complete state-space representation of the given model. The outputs of the system are compressor speed ωc and the torque T transmitted through the drive shaft.
Compare and contrast the Scrum approach to project management with conventional plan-based approaches as discussed in class. Your comparison should be based on the effectiveness of each approach forplanning the allocation of people to projects,est..
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