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A 1 kg sample of water vapor initially at 300 kPa and 250 degrees C cools at constant pressure with no internal irreversibilities until its temperature is 30 degrees C. Determine the work, the heat transfer and the exergy change accompanying this process.w(out) = -238.6 kJ/kgq(in) = -2841.8 kJ/kgdelta phi = -572.5 kJ/kg
air is constantly being recirculated throughout the me building. in the summer that air is also cooled using chilled
a vapor-compression refrigeration cycle employed in a heat pump uses refrigerant r-134a and provides 15 kw of heating.
a vertical piston-cylinder assembly with 0.2 kg of water is initially a saturated vapor. the piston has a diameter of
determine the time needed for the velocity to become v=vf. initially the particles falls from rest.
Determine the Biot number in order to support the lumped formulation. Solve the differential equation to find an expression for temperature as a function of time.
a 2250 l tank contains 5.682 kg of steam at 5 bar. determine the temperature and z compressibility of steam using a.
the following times to failure in hours were observed in an experiment where 14 units were tested until eight of them
a wind turbine with a 90m-diameter rotor is rotating at 30 rpm under steady winds at an average velocity of 25 kmh.
at a surface cutting speed of 190 mmin the productive tool life was 60 minutes. at a surface cutting speed of 225 mmin
an industrial water shutoff valve is designed to operate with 30lbs of force and will encounter 200lbs of resistance
write a matlab code to draw a cubic bezier curve using decasteljau algorithm. the input to the program should be four
it has been determined that a point in a load-carrying member is subjected to the following stress condition sx 400 mpa
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