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Air enters the compressor of an ideal air standard Brayton cycle at 100 kPa, 25°C, with a volumetric flow rate (-V?) of 8 m3/s. The compressor pressure ratio is 12. The turbine inlet temperature is 1100°C. Use the PG model for air. Determine the thermal efficiency (?th). Determine the net power output (W?net). Determine the back work ratio
A spring on a rod hangs from the ceiling and has a 100kg collar attached to the other end, also riding on the rod. The collar is 3m below the ceiling. The collar is attached to a string that passes diagonally through a pulley near the ceiling height,..
Show that heat is a path path function and not a property of system
a 0.5 m3 rigid vessel initially contains saturated liquid-vapor mixture of water at 100deg c. the water is now heated
Determine the force developed along strut AD for equilibrium of the 390-lb crate
Describe the difference between a danger sign and a caution sign. When is the signal word "Warning" used?
Calculate how much spoils the absorber design by determining the magnitude X using equation (5.32).
Explain why it is important to model the context of a system that is being developed. Give two examples of possible errors that could arise if software engineers do not understand the system context.
air contained in a piston-cylinder assembly contains air initially at 2 bar 300 k and a volume of 2 m3. the air
The temperature on the faces of a plane wall 15cm thick are 375 and 85?.The wall is constructed of a special glass with the following properties:k=0.78W/m·?,ρ=2700Kg/m³,Cp=0.84KJ/Kg·?.What is the heat flow through the wall at steady-state cond..
A similar caisson is placed in open water, on a layer of sand. The water level is 5 m above the top of the sand, so that the top of the caisson is 5 m above water. Again calculate the average total stress and the average effective stress just belo..
methane is to be compressed from 0.05 mpa and -120degf to 5 mpa in a two-stage compressor. in between adiabatic
air at 100 o f and 14.7 psia has a dew point temperature of 70o f. determine the relative humidity and the humidity
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