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A small fan moves air at a mass flow rate of 0.004 lbm/s. Upstream of the fan the pipe diameter is 2.5 in., the flow is laminar, the velocity distribution is parabolic, and the kinetic energy coefficient 1, is equal to 2.0. Downstream of the fan, the pipe diameter is 1 in., the flow is turbulent, the velocity profile is quite flat, and the kinetic energy coefficient 2, is equal to 1.08. If the rise in static pressure across the fan is 0.015 psi and the fan shaft draws 0.00023 hp, compare the value of loss calculated: (a) assuming uniform velocity distributions, (b) considering actual velocity distributions.
Determine the horsepower required to overcome the drag on a streamlined car traveling at 90 km/hr. The drag coefficient C is 0.2, and the drag force is Fp = .5pv^2AC. Where A is the projected area of the car and v is the velocity. The density of the ..
Discuss any of your actions and/or thought processes
At the exit, the pressure is 113 kPa and the temperature is 69 degrees C. Determine the mass flow rate, the exit velocity and the area of the exit.
a smoking lounge is to accommodate 15 heavy smokers. the minimum fresh air requirement for smoking lounges is specified
a flashlight is powered for 30 minutes by a 9-v battery supplying power at 0.5 amps.a find the resistance of the
consider an inertial reference frame with the center of the earth as its origin and with the x-y i-j plane in the
design the condenser of a steam power plant that has a thermal efficiency of 40 percent and generates 10 mw of net
A laminated steel (E=200 GPa and nu=0.3) cylinder consists of a jacket with an inside diameter of 250mm and an outside diameter of 300mm shrunk onto a tube with an inside diameter of 150mm. The initial shrinkage pressure is 28MPa.
at steady state a device receives a stream of saturated water vapor at 210 degrees c and discharges a condensate stream
a u-tube manometer is used to measure the pressure of a vessel under vacuum. assume the manometer is open to
When temperature increases, the equilibrium concentration of vacancies in a material
What tube diameter is required for the model if dynamic similarity is to be maintained between model and prototype?
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