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Hydrogen at 25 bar, 450°C enters an adiabatic turbine and expands to 2 bar, 160°C with a mass flow rate of 0.2 kg/s. For a dead state of To= 25°C, Po = 1 atm determine the exegetic efficiency.
a two-cylinder 250 cm3 displacement motorcycle engine that operates on an ideal otto cycle at 4500 rpm. the compression
Starting from the ideal gas law and the first law of thermodynamics derive the relationship between a) pressure temperature and, b) pressure and specific volume in isentropic compression show detail proof.
Determine the percent error n in replacing the sine and the tangent of an angle by the value of the angle in radians for angle values 5 degrees, 10 degrees, and 20 degrees. Explain the qualitative difference between the sine and tangent results.
a wall has a total r-value of 15. determine the annual cost of the heat loss per square foot in a climate having 5000
air enters a compressor at 179 kpa and 290 k and exits at a temperature of 500.9 k. determine the power kw for the
a heat exchanger is a device in which heat flows between two fluid streams brought into thermal contact through a
What is the mean molar mass of an ideal gas that has a specific heat ratio (k) of 1.11, and a specific heat at constant pressure of 1.680 kJ/kg K?
you have a freezer in you apartment that maintains an inside temperature at 12degreef. the coefficient of performance
question in an em wave traveling north the e field oscillates vertically and has a frequency of 85.0 khz and an rms
what is the net force exerted on a vertical 18c rectangular plate that is 3m tall 5m wide and whose top edge is 2m
a mass of 5 kg of saturated water vapor at 300 kpa is heated at constant pressure until the temperature reaches 200 0c.
a crate of weight w550 lb has been attached to a pickup truck by a rope whose tensile strength is tmax350 lb. if the
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