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A water cooled compressor with air flowing at 0.1 kg/s enters at a temperature of 27*C. The compressor work is 5 kW and the heat transfer rate to the water is 2 kW. Use air as an ideal gas (Cp = 1.006 kJ/kg-K). Ignore changes in KE and PE. (a) Draw the schematic of the compressor . (b) State the model assumptions. (c) Write down the first law for the air in the compressor . (d) Determine the change in temperature of the air, in *C . (e) If the change in temperature of the water is 10*C and there is no change in the water pressure, determine the flow rate of the water in kg/s., and water as incompressible (Cp = 4.2 kJ/kg-K
Water is the working fluid in a regenerative Rankine cycle with one closed feed water heater and one open feed water heater. Steam enters the turbine at 1400 psi and 1000 F and expands to 500 psi, where some of the steam is extracted and diverted to ..
an adiabatic compressor compresses air from atmospheric pressure and 70 degf at a rate of 10000 acfm actual cubic feet
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measurements of the diameters of a random sample of 200 ball bearings made by a certain machine during one week showed
A 30-cm-long, 1-cm-diameter aluminium fin (k=237 W/m·K) is exposed to an environment at 22oC. The base temperature of the fin is maintained at 80 oC. The heat transfer coefficient between the rod and the surrounding air is 11 W/m2·K.
a 45 kg machine is mounted on a spring of stiffness 8 times 10 5 nm. when the machine operates at 32 hz. the machines
a vapor initially at 50 psia and 100 f state 1 is contained within a piston- cylinder device. the refrigerant is cooled
An object initially at an elevation of 5 m relative to Earth's surface with a velocity of 50 m/s is acted on by an applied force R and moves along a path. Its final elevation is 20 m and its velocity is 100 m/s. The acceleration of gravity is 9.81 m/..
how much heat in kj must be added to 2 kg of steam initially at t1 300 degree c contained within a rigid volume to
the following stress state exists around a wellbore drilled in the atlantic oceansigma x sigma y 80 bar sigma zz
develop from first principles a process equation for a wire extrusion operation for producing round copper cable. make
the piston of a piston-cylinder device containing gas has a mass of 60kg and a cross-section area of 0.04m. the local atmospheric pressure is 0.97bar, and the gravitational acceleration is 9.81ms. determine the pressure inside the cylinder?
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