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The displacement volume of an internal combustion engine is 5.6 liters. The processes within each cylinder of the engine are modeled as an air-standard Diesel cycle with a cutoff ratio of 2.4. The state of the air at the beginning of compression is fixed by p1 5 95 kPa, T1 5 278C, and V1 5 6.0 liters. Determine the net work per cycle, in kJ, the power developed by the engine, in kW, and the thermal efficiency, where r is compression ratio and rc is cutoff ratio. Derive this expression.
a four-stroke-cycle engine operates on the air-standard diesel cycle. the engine has six cylinders with a 0.105 m bore
a ball is dropped from a boat so that it strikes the surface of a lake with speed 16.5 fts. while in the water the
saturated liquid water is compressed from 100 kpa state 1 to 2.5 mpa state 2 in an adiabatic pump having 85 isentropic
given the differential equation apxq2 d2ydx2bpxqdydx cy0 show that it can be transformed into another differential
a 1-kg disk slides on a smooth horizontal table and is attached to a string that passes through a hole in the table.a
a 60-lb uniform thin panel is placed in a truck with end a resting on a rough horizontal surface and end b supported by
helium initially at 160degf and 30 psia is slowly withdrawn from a well-insulated rigid tank of volume 7 ft2 until the
If the mass diffusivity of hydrogen is 9 X 10-7 m2/s, how much time is required to bring the density of dissolved hydrogen to a value of 1.2 kg/m3 at the center of the sheet?
a gasoline engine receives air at 10 0c 100 kpa having compression ratio of 91 bynbspvolume. the heat addition by
Estimate the equilibrium temperature of each plate assuming they are diffuse and that the solar flux is 1368 W/m2. The spectral absorptivity of the black painted surface can be approximated
What load P allow can be supported at the midpoint of the bar if the yield stress in the steel wires is 220 MPa and in the aluminium wire is 80 MPa? A saftey factor of n = 2 is needed.
hot exhaust gases carbon dioxide are cooled from 700 k to 300 k isobarically at 500 kpa. the cooling fluid is
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