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Several geothermal power plants are in operation in the United States and more are being built since the heat source of a geothermal plant is "free energy". An 8-MW geothermal power plant is being considered at a location where geothermal water at 160C is available. Geothermal water is to serve as the heat source for a Rankine power cycle with R-134a as the working fluid. Limiting the design to a single reheat pass and a single feedwater heater (open or closed), determine the optimal pressures, temperatures, and fraction of steam extracted to maximize thermal efficiency.
determine diameter of a circular rod of ductile material with a fatigue strength ,e=280 Mpa. Add a tensile yield strength of 350 Mpa. The member is subjected to a varying axial load from 700 kN to -300kN. Assume Kt=1.8 and factor of safety=2.
A small hydroelectric power plant produces electrical power at a rate of 30 kW. The plant utilizes a stream of water that drops 40 m from a lake to the turbine and flows at a rate of 100 kg/s. What is the efficiency of the turbine-generator?
the pin c will support a force of 24 knmagnitude.Based on this criterion, you are asked to determine the largest mass m that the frame can safely support.the diameter of pulley at d is given as 0.2 m.find maximum mass m that can be supported by fr..
why is the correct tightening of friction grip bolts important?
If the cycle operates in steady flow with a power output of 20 kW, what is the steam flow rate?
The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic compression process, the air is at 100 kPa, 17 C, and 600 cm2
Estimate the energy that must have been supplied to cause the specimen to reach failure.
Find the velocity of the bullet and the distance it has traveled into the water after 4 seconds. Please show detailed step by step process to solution.
If the beam has square cross section of 9 in., on each side, determine the absolute maximum bending stress in the beam.
Determine the outlet temperature of the hot fluid.
Calculate the ultimate tensile strength (engineering) of a material whose strength coefficient is 700 MPa and a tensile test specimen which necks at an engineering tensile strain of 0.35.
If the pipe is to be insulated with glass wool insulation (k=.05 W/m C) in order to decrease the temperature rise of water to .25 degrees C, determine the required thickness of the insulation.
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