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Moist air initially at 70 percent humidity and 5 C is heated to 25C. The input flow rate is 3000 cubic meters per hour, and the pressure is 100 kPa. Using the air table and the steam tables, find
(a) the mass flow rate of water vapor in kg/s,
(b) the heat transfer needed in kW,
(c) the final relative humidity.
a gas is contained in a vertical piston-cylinder arrangement. the 50-lbm piston initially rests on the bottom stops.
water enters the steam generator of a power plant at 7mpa 50 degrees c and exits at 7mpa and 600 degrees c. the steam
do you think the objects created in the following representation schema are always valid? justify your answers with
a pitot static probe is used to determine the airspeed of an airplane that is flying at an altitude of 6000m. if the
you are designing a centrifugal compressor system to compress filtered atmospheric air at 101 kpa absolute to 750 kpa
estimate the diffusion coefficient at 25degc of trace of ethanol in water and of traces of water in ethanol. viscosity
Heat transfer to air takes place partly at constant volume and partly at constant pressure, and it amounts to 1520.4 kJ/kg. Determine (a) the fraction of heat transferred at constant volume and (b) the thermal efficiency of the cycle.
a fan is used to accelerate quiescent air to a velocity to 12ms at a rate of 3m3min. if the density of air is 1.15kgm3.
a heat engine is operating on a carnot cycle and has a thermal efficiency of 55. the waste heat from this engine is
develop the maxwell and kelvin-voigt relations. creep is deformation under constant stress while stress relaxation is
hot air is contained in a vertical frictionless piston-cylinder device.the piston has a mass of 4 kg and a
an engine of mass 180 kg is to be supported on four helical springs. when the engine speed is 900 rpm there is a
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