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R-22 enters an insulated diffuser as saturated vapor at 4C with a velocity of 300m/s. The refrigerant exits the diffuser with a velocity of 15m/s and at p=10bar. determine the final temperature and state of the refrigerant.
air at 0.1 kgs is to be cooled from 140 c to 40 c in a heat exchanger. the coolant water is at 20c constant throughout
a uniform rod ab of length 3m and mass 20kg is suspended with its end b against a vertical wall while its end a is
u.s. energy use was approximately 100 quads quadrillion btu in 2008. about 85 of this energy was supplied by burning
a man having the mass of 73 kg sits in the chair which is pin-connected to the frame bc. if the man is always seated in
the collars are pin connected at b and are free to move along rod oa and the curved guide oc having the shape of a
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.
To Verify the law for parallelogram of forces, law for triangle of forces and law of polygon of forces. These laws are very useful to calculate unknown forces in very short time.
a vertical piston-cylinder assembly with 0.2 kg of water is initially a saturated vapor. the piston has a diameter of
consider the annulus formed between a rod of radius r0 and a tube of radius r1. find the velocity profile for couette
explain in your own words what standard deviation is and why it is useful when describing experimental data. 2. what
the inner surface of a hollow cylinder internally pressurized to 100mpa experiences tangential and axial stresses of
Saturated water vapor at 200oC is isothermally condensed to a saturated liquid in a piston-cylinder device. Calculate the heat transfer and the work done during this process in kJ/kg.
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