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A cylindrical chamber has a uniform diameter of 6m and a height of 3m. The circular roof is maintained at 300oC and has an emissivity of 0.9 while the floor has an emissivity of 0.2 and is at temperature 30oC. The curved wall is well-insulated and may be regarded as adiabatic. Heat transfer between the surfaces occurs only by radiation.
A swimmer with body mass 50 kg is pulled from the ocean with hypothermia. Her body temperature is 27°C. She is connected to a shell and tube heat exchanger. Blood flow through the device is kept constant at 1,000 ml/min. The perfusionist adjusts the ..
jus before it lifts off a 10500 kg airplane is traveling at 60 fts. the total horizontal force exerted by the planes
Determine the thermal efficiency of the cycle and the net specific work. Assume each turbine stage isentropic efficiency to be 99% and assume the FWH is open.
Considering the flow of a uniform stream of speed V in the x-direction, a source of strength Q at (-1,0) and sink of strength Q at (1,0). Find the velocity potential and the stagnation points
Atmospheric air at T = 40°C with a free stream velocity u = 8 m/s flows along a flat plate L = 3 m long which is maintained at a uniform temperature of 100°C. Calculate the average heat transfer coefficient over t
A car engine burns 5 kg fuel (equivalent to addition of QH) at 1500 K and rejects energy to the radiator and the exhaust at an average temperature of 750 K. If the fuel provides 40 000 kJ/kg what is the maximum amount of work the engine can provid..
the refrigerator steadily receives a power input of .15kw while rejecting energy by heat transfer to the surroundings
cooling water enters a cooling tower at a rate of 1000 kgh and 70 degree c. water is pumped from the base of the lower
a gas is contained in a vertical frictionless piston-cylinder device. the piston has a mass of 4kg and a cross
a thrust reversing system is used in jet engines to provide extra braking force to slow down an aircraft after a
if ice homogeneously nucleates at -40 degrees c calculate the critical radius values of 3.1 x 108 jm3 respectively for
a piece of electronic equipment that is surrounded by packing material is dropped so that it hits the ground with a
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