Engineering, 11.10.2019 04:30 bossybaby12
Steam enters a turbine operating at steady state at p1=6 mpa, t1 = 600°c with a mass flow rate of 335 kg/min and exits as saturated vapor at p2=20 kpa, producing power of 5.36 mw. kinetic and potential energy effects can be ignored. heat transfer occurs from the turbine to its surroundings which are at to = 30°c determine the magnitude of the rate of heat transfer, in kw, and the rate of entropy production, in kw/k, within an enlarged control volume that includes the turbine and enough of its surroundings for the heat transfer to occur at to=30°c.
Answers: 1
Engineering, 04.07.2019 18:20, luisgonz5050
Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k
Answers: 3
Engineering, 04.07.2019 19:20, rida10309
At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2
Answers: 2
Engineering, 04.07.2019 19:20, diawia
Air at a pressure of 1atm and a temperature of 40 c is in parallel flow over the top surface of a flat plate that is heated to a uniform temperature of 120 c. the plate has a length of 0.40m (in the flow direction) and a width of 0.15m. the reynolds number based on the plate length is 50, 000. what is the rate of heat transfer from the plate to the air? if the free stream velocity of the air is doubled and the pressure is increased to 10 atm what is the rate of heat transfer?
Answers: 2
Steam enters a turbine operating at steady state at p1=6 mpa, t1 = 600°c with a mass flow rate of 33...
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