Engineering, 08.10.2019 02:00 sunshine52577oyeor9
Air enters the compressor of a cold air-standard brayton cycle with regeneration, intercooling, and reheat at 100 kpa, 300 k, with a mass flow rate of 6 kg/s. the compressor overall pressure ratio is 10, and the pressure ratios are the same across each compressor stage. the intercooler and reheater both operate at the same pressure. the temperature at the inlet to the second compressor stage is 300 k, and the inlet temperature for each turbine stage is 1400 k. the compressor and turbine stages each have isentropic efficiencies of 80% and the regenerator effectiveness is 80%. for k = 1.4 & cp = 1.005 kj/kg. k, calculate (a) the thermal efficiency of the cycle. (b)the back work ratio. (c) the net power developed, in kw.
Answers: 2
Engineering, 03.07.2019 14:10
Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned
Answers: 2
Engineering, 04.07.2019 18:10
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
Engineering, 04.07.2019 18:10
Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.
Answers: 2
Engineering, 04.07.2019 18:20
Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.
Answers: 3
Air enters the compressor of a cold air-standard brayton cycle with regeneration, intercooling, and...
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