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Determine the specific exergy of saturated water vapour weighing 2kg at 120°C, having a velocity of...
a) In thermodynamics, what is the second law efficiency? How does it differ from the first...
a) In thermodynamics, what is the second law efficiency? How does it differ from the first law efficiency? (2 marks) b) Can a system have a higher second law efficiency than the first law efficiency during a process? Give examples (Hint: Consider efficiencies of a reversible cycle). (2 marks) c) An ideal gas is stored in a closed vessel at pressure p and temperature T. If p = po, derive an expression for the specific exergy in terms of T,...
Water entering a wet cooling tower at 35°C at a rate of 100 kg/s is cooled to 22°C in the cooling tower by air that enters the tower at 1 atm, 20°C, and 60% relative humidity and leaves saturated at 3...
Water entering a wet cooling tower at 35°C at a rate of 100 kg/s
is cooled to 22°C in the cooling tower by air that enters the tower
at 1 atm, 20°C, and 60% relative humidity and leaves saturated at
30°C. The makeup water of 22°C is supplied to the outlet to make
the mass flow rate of the cool water the same as that at the inlet,
see Figure Q5.
Q.5Water entering a wet cooling tower at 35°C at...
Objective To determine the force generated by a jet of water striking on a surface Description...
Objective To determine the force generated by a jet of water striking on a surface Description of apparatus The supply is led to a vertical pipe terminating in a tapered nozzle. This produces a jet of water which impinges on the vane in the form of a Flat Plate, Hemispherical Cup, Conical Plate or 30° Angled Plate. The nozzle and vane are contained within a transparent cylinder; at the base of the cylinder there is an outlet by which the...
a) In thermodynamics, what is the second law efficiency? How does it differ from the first law efficiency? (2 marks) b) Can a system have a higher second law efficiency than the first law efficiency during a process? Give examples (Hint: Consider efficiencies of a reversible cycle). (2 marks) c) An ideal gas is stored in a closed vessel at pressure p and temperature T. If p = po, derive an expression for the specific exergy in terms of T,...
Water entering a wet cooling tower at 35°C at a rate of 100 kg/s
is cooled to 22°C in the cooling tower by air that enters the tower
at 1 atm, 20°C, and 60% relative humidity and leaves saturated at
30°C. The makeup water of 22°C is supplied to the outlet to make
the mass flow rate of the cool water the same as that at the inlet,
see Figure Q5.
Q.5Water entering a wet cooling tower at 35°C at...
Objective To determine the force generated by a jet of water striking on a surface Description of apparatus The supply is led to a vertical pipe terminating in a tapered nozzle. This produces a jet of water which impinges on the vane in the form of a Flat Plate, Hemispherical Cup, Conical Plate or 30° Angled Plate. The nozzle and vane are contained within a transparent cylinder; at the base of the cylinder there is an outlet by which the...
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