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An ideal Otto cycle has a compression ratio of 13.5, takes in air at 95kPa and 20°C and is repeated 940 times per minute.
Using constant specific heats at room temperature, determine
A) the thermal efficiency of this cycle
B) the rate of heat input if the cycle is to produce 296 kW of power.
When 0.848 g of finely divided iron is burned, 1.212 g of a reddish brown oxide is obtained. Write a balanced chemical equation for the reaction of iron and molecular oxygen based on the empirical formula.
what is an exergy factor? 8 what is a pinch point and what is it used for? 9 what does the compressor in figure 2 do?
suppose that 1 kg of saturated water vapor at 100ordmc is condensed to a saturated liquid at 100ordmc in a
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A four cylinder, 3.6 litter CI engine operates with a compression ratio of 18 and an air fuel ratio of 17. The engine operates on a dual cycle. The maximum pressure is limited to 12MPa and the maximum temperature is limited to 3600 K. Assume that at ..
a standard door into a house rotates about a vertical axis through one side as defined by the doors hinges. a uniform
a mixture of methane and air is flammable only if the mole percent of methane is between 5 and 15. a mixture containing
calculate the number of vacancies per cubic meter in some metal at 689degc. the energy for vacancy formation is 0.75
the frame ACD is supported by a ball-and-socket joint at A and D and by a cable which passes through a ring at B and is attached to hooks at G and H. Knowing that the frame supports at point C a load of magnitude P=268N, determine the tension in t..
a liquid food is being heated in a tubular heat exchanger. the inside pipe wall temperature is 110degc. the internal
determine the electrical power input to the pump. the density of water is 1kg/l.
a cylinder containing 0.9 kg of ammonia has an externally loaded piston. initially the ammonia is at 2 mpa 180degc and
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