Q1: A- 0.5kg/s of a fluid flows in a steady state process. The properties of fluid at entrance are measured as p1 = 1.4bar, density = 2.5kg/m3 , ul = 920KJ/kg while at exit the properties are p2 = 5.6 bar, density = 5 kg/m3 , u2 = 720KJ/kg. The velocity at entrance is 200 m/sec, while at exit it is 180m/sec. It rejects 60kw of heat and rises through 60m during the flow. Find the change of enthalpy %3D %3D %3D and the rate of work done.
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
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