Engineering, 25.04.2020 03:16, lazok
A nuclear power plant located on the seashore of an arid country sells electricity to the grid during the day (from 6 AM to 8 PM) and heat and electricity to a seawater desalination plant at night. In the day-time mode, the plant employs a simple Rankine cycle with overall efficiency of 40%, while the condenser heat rejection (Qout) is wasted. During the night, the waste heat from the plant is sold to the desalination plant as a heat input to their process. The reactor thermal power output which is the input heat to the Rankine cycle is 500 MW, constant day and night. The enthalpy of liquid water entering the boiler is 175 kJ/kg while the vapor exiting the boiler has 2772 kJ/kg enthalpy. The nuclear power plant operates at 80% capacity factor. Assume that electricity is sold at 8 ¢/kWh during the day and 2 ¢/kWh at night. Heat to the desalination plant is sold at 0.2 ¢/MJ. (a) Calculate the total revenues ($) generated by the plant in one day (24-hour). (10 points)
Answers: 1
Engineering, 04.07.2019 18:10, tjeffers90028
Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.
Answers: 1
Engineering, 04.07.2019 18:10, niyawilliams23
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
A nuclear power plant located on the seashore of an arid country sells electricity to the grid durin...
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