Engineering
Engineering, 13.07.2019 03:20, 44bree

Estimate the dominant acoustic frequency (khz) in a knocking cfr engine if the average end-gas temperature is assumed to be 1500 k.

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Chemistry, 10.07.2019 20:20, laura52677
Recall the terms "specific enthalpy" and "enthalpy density" from the module on thermochemistry. how are they different and why must they be considered when choosing a fuel source? 2 engine "knock" is the sound an engine makes when gasoline ignites too soon in the engine cylinder (possibly due to low octane fuel). knocking may cause loss of power, overheating and engine damage knocking may be due to low octane fuel. why? what is meant by octane rating? (research! ) a. how could the composition of gasoline be altered to increase the ease of starting a car in cold weather? (research! ) b. catalytic converter in your car's engine research what happens to pollutants in a 3. what are some specific environmental concerns that occur along the pathway of underground reserve to refined petroleum product? 4.
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Chemistry, 24.09.2019 23:20, mchillery1028
Carnot cycle. if a boiler's heat source produces 10e btu/hr at 600f, what is the highest possible rate at which work may be produced? the ambient air is 70f. ans: w 5x10 btu/hr 2. two carnot engines are operated in series with the exhaust (heat output) of the first engine being the input of the second engine. the upper temperature of this combination is 260f, the lower temperature is 40f. if each engine has the same thermal efficiency, determine the exhaust temperature of the first engine (the inllet temperature of the second engine) ans: t 140f 3. a nuclear power plant generates 750 mw of power. the heat engine uses a nuclear reactor operating at 315c as the source of heat. a river is available (at 20c) which has a volumetric flow rate of 165 m/s. if you use the river as a heat sink, estimate the temperature rise in the river at the point where the heat is dumped. assume the actual efficiency of the plant is 60% of the carnot efficiency ans: t 22.6c
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Chemistry, 24.09.2019 23:20, leo4687
Two carnot engines are operated in series with the exhaust (heat output) of the first engine being the input of the second engine. the upper temperature of this combination is 260f, the lower temperature is 40f. if each engine has the same thermal efficiency, determine the exhaust temperature of the first engine (the inlet temperature of the second engine). ans: t = 140f 3. a nuclear power plant generates 750 mw of power. the heat engine uses a nuclear reactor operating at 315c as the source of heat. a river is available (at 20c) which has a volumetric flow rate of 165 m/s. if you use the river as a heat sink, estimate the temperature rise in the river at the point where the heat is dumped. assume the actual efficiency of the plant is 60% of the carnot efficiency.
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Estimate the dominant acoustic frequency (khz) in a knocking cfr engine if the average end-gas tempe...

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