Engineering, 09.04.2020 19:01 pacerskora
A gas turbine power plant operates on an ideal Brayton cycle. However, instead of releasing the full amount of waste heat to surrounding, this power plant uses some of the exhaust gas and mixes it with the inlet stream (assume the mixing is adiabatic and constant pressure). The plant has an inlet stream of air at 300 K and 0.1 MPa at a mass flowrate of 5 kg/s (state 0). This inlet flow is mixed with 0.2 kg/s of the exhaust gas stream, which is at 750 K and 0.1 MPa. The peak pressure in the plant is 1.1 MPa. The Cv and R of the air is 716 J/kg-K and 287 J/kg-K.
Answers: 3
Engineering, 04.07.2019 18:20
Air flows over a heated plate à t a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
Answers: 1
Engineering, 04.07.2019 19:10
When subject to a steady load (within elastic range) over a long period of time, what is the major difference in material behavoir between steel and plastic?
Answers: 2
Engineering, 04.07.2019 19:10
The air in an automobile tire with a volume of 0.015 m3 is at 32°c and 140 kpa gage. determine the amount of air that must be added to raise the pressure to the recommended value of 206 kpa gage. assume the atmospheric pressure to be 128 kpa and the temperature and the volume to remain constant.[r-0.287 kj/kgk]
Answers: 3
Engineering, 04.07.2019 19:10
An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed
Answers: 3
A gas turbine power plant operates on an ideal Brayton cycle. However, instead of releasing the full...
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