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A water cooled compressor with air flowing at 0.1 kg/s enters at a temperature of 27C. The compressor work is 5 kW and the heat transfer rate to the water is 2kW. Use air as an ideal gas (Cp = 1.006 kJ/kg-K). Ignore changes in KE and PE.
(c) Write down the first law for the air in the compressor (4 pts).
(d) Determine the change in temperature of the air, in C (7 pts).
(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) (7 pts).
A fire truck draws water from an open constant-level reservoir through a hose of 0.2 ft2 cross section. The water is discharged from the pump through another 0.2 ft2 hose to a surge tank pressurized to 120 psig with air at the top. The pump adds 970 ..
A trapezoid is submerged in water so that its flat surface is perpendicular to the free surface and shorter leg is 0.4m below the free surface as shown in Figure. Length of the shorter leg is 1.6m and longer leg is 2.8m. Height of the trapezoid is 1...
What will the ratio of the angle of twist be to that of the hollow shaft if the maximum shear stress in the material of 75 N / mm ^2 and what is the ratio of actual permissible shear stress?
A vapor composed of 0.90 mole fraction ethanol and 0.10 mole fraction acetic acid at 120.0 mmHg (absolute), is in equilibrium with a liquid phase also composed of ethanol and acetic acid.
the load bearing piston in a certain hydraulic has an area 50 times as large as the input piston. if the larger piston
1 consider the diagram below where a pump is used to draw water from a lake to feed an irrigation system.a which of the
an ideal gas at 300 k has a volume of 15 liters at a pressure of 15 atm. calculate 1 the final volume of the system 2
a 100kg pure iron block at 27 degrees c is dropped into an insulated rigid tank that contains 0.1m3 of unused engine
A piston-cylinder device contains 0.005 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 600 kPa. Heat is transferred at constant pressure until the temperature reaches 200°C.
for a brass alloy the stress at which plastic deformation begins is 345 mpa 50000 psi and the modulus of elasticity is
An open wind tunnel with altitude of 1000m has Pin=89,876Pa, Ain=4m^2, T=281.7K, Vin=30m/s and the test section Aout=0.5m^2, Vtest=(X)m/s. R=287J/(Kg*K), density=1.1117kg/m^3 and dynamic viscosity=1.076E-05kg/m-s
two particles a and b start from rest at the origin s 0 and move along a straight line such that aa 6t-3fts2 and ab
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