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An ideal air-standard Brayton cycle operates at steady state with compressor inlet conditions of 300 K and 100 kPa and a fixed turbine inlet temperature of 1700 K. For the cycle, (a) determine the net power developed per unit mass flowing, in kJ/kg, and the thermal efficiency for a compressor pressure ratio of 8. (b) plot the net power developed per unit mass flowing, in kJ/kg, and the thermal efficiency, each versus compressor pressure ratio ranging from 2 to 50.
a cylinder contains 2 kg of steam at 200 kpa and 200 c. the steam is compressed at constant pressure until its
a thin metal cylinder contains an ideal gas. the cylinder has a cross sectional area of 100 cm2. the surroundings
0.75 kg of Refrigerant 134-a is compressed in a compressor from 160 kPa and -10°C to 1.2 Mpa and 50°C, steadily. Determine the change in flow exergy of the refrigerant during this process, if the environment is at 100 kPa and 25°C.
What is the phase and the specific volume of water at 3000 Kpa and 455 degrees C? Show this state on a PV diagram
Temperature Effect on Materials (i) A hollow cylinder of aluminium 1 m long with a 40 mm outside diameter is at a temperature of 20 °C. What is the change in length and circumference of the cylinder when it is cooled to â?'25 °C
four 4.0 lbm of co2 are contained in a piston-cylinder system. the co2 is initially at a temperature t1500degr and
determine the maximum theoretical speed that may be achieved over a distance of 360ft by a car of weight w starting
methane is preheated to 80 c degree and is burned in 20 percent excess air that is preheated 200 c degree in a
Draw a sketch showing all features of interest and identify the kind of analysis to be performed (e.g. bending, deflection, etc.)
The maximum allowable pipe velocity is 3 m=s, the length of the line is 1500 m, and the difference in elevation between the reservoirs is 30 m. Assume f ¼ 0.02 and K ¼ 0.5.
a pistoncylinder setup contains 0.1 kg of saturated liquid and vapor water at 100 kpa with quality 25. the mass of the
how would you use a pulley system with one rope to pull at a single item at two points simultaneously?the free ropes of
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