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A four-cylinder, four-stroke internal combustion engine has a bore of 6.5 cm and a stroke of 5.3 cm. The clearance volume is 12% of the cylinder volume at bottom dead center and the crankshaft rotates at 3600 RPM. The processes within each cylinder are modeled as a cold air standard Otto cycle with a pressure of 100kPa and a temperature of 38oC at the beginning of compression. The maximum temperature in the cycle is 2889 K. Based on this model calculate:
a) the heat added per cycle (kJ)
b) the heat rejected per cycle (kJ)
c) the net work per cycle (kJ)
d) the power developed by the engine (kW)
steam expands isentropically from 2 mpa and 500 k to a final state in which the quality is 0.90. determine the final
for certain liquid mu 6 times 10-5 lb.sft2 at 50 degree f and mu 1.5 times 10-5lb.sft2 at 180 degree f. make use of
(a) Determine the blade angles at leading and trailing edges of both the rotor and stator at the mean radii, (b) Calculate the mass flow rate and the power required for each stage.
refrigerant 134a at 140f and 125 psia enters a condenser of a chiller at 800 lbh and exits as a saturated liquid at the
a small town has a peak power requirement of 150 kw. a plant is created using the regenerative cycle. the energy can be
the surface pressure of venus is about 90 bar and the surface temperature is ap-proximately 880 degrees f. the
refrigerant 134a at -10degc 1.4 bar and a mass flow rate of 280 kghr enters an insulated compressor operating at steady
the water level in a sealed tank is 26 m above the ground. the pressure in the air space above the water is 0.25 mpa
a commercial project requires that installation of 1856 sq. ft. of acoustical ceiling. using the productivity rate of
an accelerometer was used to measure the vibrations of machinery. the sensor output was acquired during an experiment
consider the power system as designed below. the duty fluid is water and has a mass flow 0.75 kg s and all piping
a rigid tank contains an ideal gas at 1227 c and 200 k pa. the gas is cooled until the gauge reads 50 k pa. if the
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