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It is estimated that the isentropic efficiency of the turbine is 70%. What is the maximum turbine inlet pressure if the exhaust is not to be in the two-phase region?
Steam flows steadily into a turbine at 2 MPa and 400 deg C, at a flow rate of 25 kg/s. If the turbine is adiabatic and the steam leaves the turbine at 100 kPa, what is the maximum power output of t
If the specific ratio is the same, what is the compression ratio for the air-standard Otto cycle that will provide the same efficiency as the Brayton cycle?
If the specific ratio is the same, what is the pressure ratio for the air-standard Brayton cycle that will provide the same efficiency as the Otto cycle?
In a cogeneration scheme, a Diesel engine-generator is used. The Diesel engine-generator is rated at 2000 kWe. What is the total efficiency of the cogeneration scheme?
Steam at 35 bar and 600 degree K enters a throttling valve that reduces the steam pressure to 7 bar. Assuming there is no heat loss from the valve, what is the exit temperature of the steam and its
Design considerations limit the maximum normal stress is 74 ksi, the maximum shearing stress is 40 ksi, the maximum normal strain to 2200 uin/in and the maximum shearing strain to 2500 ur ad.
The mix leaves the chamber at 200kPa and 70 dgree clecius, heat is lost to the surroundings at a rate of 190 Kj/min. Determine the rate of entropy generation during this process.
Find the time required for the machine to decelerate to 100 mph in standard air. What assumption did you have to make, and was this assumption valid?
At what point on the plate does the flow become transitional? Assume a unit width for the plate. Show the equations you used in addition to your plot.
R134a is condensed at a constant temperature of 30°C as it flows through the condenser of a refrigerator by rejecting heat at a rate of 6 kW.
Compute the percentage change in the volume of the oil in the system as the pressure is increased from zero to 3000 psi if the bulk Modulus of the oil is 189000 psi ( 1303 Mpa)
Two steel (E=30,000 ksi) pipes (1) and (2) are connected at flange B. Pipe (1) has an outside diameter of 6.625 in. and a wall thickness of 0.28 in. Determine the maximum downward load P that may be
A heat pump cycle is executed with R-134a under the saturation dome between the pressure limits of 1.6 MPa and 0.2 MPa. If the power consumption of the heat pump is 4.2 kW.
A heat pump absorbs heat from the cold outdoors at 3 C and supplies heat to a house at 20 C at a rate of 30,000 kJ/h. If the power consumed by the heat pump is 3 kW.
In a water heating system, cold water at 5 C flowing at a rate of 5 kg/s is mixed adiabatically with hot water at 80 C flowing at a rate of 2 kg/s, state the assumptions.
Estimate the heat transfer area of the heat exchanger. Assume that the ocean water has the same density and specific heat as those of typical water.
What is the heat supplied to the plant by the steam? If the steam is saturated at 220 C and expands to a pressure of 15 kPa with a quality of 0.85, estimate the flow rate of steam?
How much water must be injected to reduce the pressure in the container of .5 MPa and what would the final quality be?
An irrigation pump is used to draw water from a reservoir and deliver it to an irrigation ditch, at a mass flow rate of 15 kg/s. Find the power that must be supplied to the pump.
A heat pump is executed with R-134a under the saturation dome between the pressure limits of 1.6 MPa and 0.2 MPa. If the power consumption of the heat pump is 4.2 kW.
An air conditioner running with R-134a on a cycle executed under the saturation dome between the pressure limits of 0.8 MPa and 0.12 MPa.
What are the wall temperatures at that location and at the 10. 3 ft location? Calculate the arithmetic-mean temperature difference and the log-mean temperature difference for the heated section.
Calculate the Reynolds number based on the wire diameter. If the velocity were to be doubled, and the wire and air stream temperatures were maintained as stated, what is the required ohm ic dissipat
Find the net power output of this plant and the required mass flow rate of river water. The turbine and pump operate isentropically.