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Air at 1.0 atmosphere pressure and 77 0C enters a 5.0 mm i.d. tube with a bulk average velocity of 2.5 m/s. the velocity profile is developed and the thermal profile is developing. The tube length is 1.0 m, and a constant heat flux is imposed by the tube surface on the air over the entire length. An exit air bulk average temperature, T b,o = 127 0C, is required. Determine the exit h, the uniform heat flux and the exit tube surface temperature.
the pressure of 200 kgs of water is to be increased from 1 atm to 4 mpa. the water enters through a 20-cm-diameter pipe
a distillation column with a total condenser and a partial reboiler is separating two feeds. the first feed is a
Given a simulator or actual device, identify if a control loop is in control or out of control and identify the information used to make the decision
2 kg of water at 10oc and atmospheric pressure are placed in a pressure cooker and heated until the water boils at
a hydraulic cylinder has a piston of cross sectional area 45cm2 and a constant working fluid pressure of 2.2mpa. the
a more desirable color is 39 pigment a 27 pigment b 25.2 pigment c and 8.8 pigment d. using gauss-seidel method
a positively cambered airfoil with a zero-lift angle of attack of ?3has a lift slope of 0.1 per degree.a. calculate the
A turbine takes in 2 kg/s neon at 27C and 200 kPa with negligible velocity. The produced work is 75 kW and 30 kW of heat leaks into the turbine from the surroundings. The neon exits at 100 kPa and 230 K. Find the exit velocity of the neon.
consider heat transfer to a turbulent boundary layer with no pressure gradient or transpiration but with a vanishingly
The compression strength of Kevlar 49 fiber is about one-eight of its tensile stress. Estimate the smallest diameter of a rod on which 12 um diameter Kevlar fiber can be wound without causing kinks on its compression side.
block b moves downward with a constant velocity of 20 mms at t0 block a moving upward with a constant acceleration and
consider an ideal vapor-compression refrigeration cycle. the refrigerator employs refrigerant 134a as the working fluid
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