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1. Air enters a compressor at 105 kPa and 300 K with a volumetric flow rate of 12 m3 /min and exits at 1200 kPa and 400 K. Heat transfer occurs at a rate of 2 kW from the compressor to its surroundings. Assuming ideal-gas behavior for air, steady flow, and negligible effects of kinetic and potential energy determine the power input (kW) to the compressor.
2. Two staged steam turbines are arranged as shown in the diagram, with a “reheater” in between the two stages. Steam enters the first-stage turbine at 4 MPa and 500°C with a volumetric flow rate of 90 m3/min. Steam exits the turbine at 2 MPa and 400°C.The steam is then reheated at constant pressure to 500°C before entering the second-stage turbine. Steam leaves the second stage as saturated vapor at 60 kPa. For steady-state operation, and ignoring heat transfer for the two turbine stages and any effects of kinetic and potential energy, determine the following:
a) Mass flow rate of the steam (kg/h)
b) Total combined power produced by the two turbine stages (kW)
c) Rate of heat transfer to the steam in the reheater (kW)
water is flowing at 10 cms in pipe with a diameter of 5 cm when it hits a bifurcation some of the water travels down
A steam power plant for an automotive vehicle is proposed as shown. The boiler has a volume of 50 litres and initially contains 90% liquid and 10% vapor by volume at 100kPa. The burner is now turned on and when the pressure in the boiler reaches 700k..
Water flows at the rate of .5kg/s in a 2.5cm diameter tube having a length of 3m. A constant heat flux is imposed at the tube wall so that the tube wall temperature is 40 degrees C higher than the water temperature. Calculate the heat transfer and es..
beginning in the 1900s water troughs called track pans were built between the rails to allow steam locomotives to scoop
Determine the force in each member below by using the methods of joints. one force is 4kN at 30 degrees at the tip of the first triangle, and another 3kN force is vertical at the opposite tip of the first triangle.. There are 8 members composed of 4 ..
Design a hollow steel shaft to transmit 225 kw of power at 80 rpm without exceeding a shearing stress of 60 MPa. Consider only torsion and assume that there are no stress concentrations. Make the ratio of the outside diameter to the inside diameter t..
As a pickup truck (total mass of 2500 kg, including fuel and driver) approaches a rise in an otherwise flat road, the driver presses the clutch and begins to coast. Initially the truck was moving at 34 m/s. For many reasons, including friction losses..
Milling Process Abstract: Students will investigate the milling category of manufacturing processes. Investigation will include machine operation, types of geometry generated, cutting tools, work holding devices and calculation of machining parameter..
in flowing from section 1 to section 2 along an open channel the water depth decreases by a factor of 2 and the froude
A rigid container of 0.1 m3 and negligible heat capacity contains steam at 500 kPa and 400C. If the container is cooled, determine the pressure and temperature at which steam starts to condense. Determine also the amount of heat removed during the co..
a gas expands from an initial state where p1 500 kpa and v1 0.1 m3 to a final state where p2 100 kpa. the relationship
a standardized procedure is expected to produce washers with very small deviation in their thicknesses. suppose that 10
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