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Air enters a turbine operating at a steady state at 8 bar, 1400K and expands to 0.8 bar. This turbine is well insulated and kinetic and potential effects can be neglected. Assuming ideal gas behavior for the air, what is the maximum theoretical work that could be developed by the turbine in kJ per kg of air flow?
A spherical tank of radius 1 m containing radioactive material is buried in the earth. The distance between the earth’s surface and the tank center is 4 m. Heat release due to radioactive decay in the tank is 500 W. Calculate the steady temperature o..
Carbon dioxide (CO2) gas undergoes a process in a closed system from T1=100 F, p1=20 lbf/in^2 to T2=400 R,p2=50 lbf/in^2. The entropy produced due to internal irreversibilities during the process is determined to be 0.15 Btu/R per lb of gas.
Diffusion Coeffiecient, Calculate Constant, The diffusion coeffiecient for Cr^+3 in Cr2O3 is 6x10^-15 cm2/s at 727 degrees Celcius and is 1x10^-9 cm2/s at 1400 degrees Celcius.
air is compressed in a piston-cylinder device from 100 kpa and 17degreec to 800 kpa in a reversible adiabatic process.
a 500-hp hydroelectric plant generates power using water at a rate of 1000 ft2min with an overall efficiency of 35.
Find the maximum shear stress in a 5 1/2 in-diameter circular saw blade if it runs idle at 5000 rev/min. The saw is 14 guage(0.0747 in) steel and is used on a 5/8 in-diameter. The thickness is uniform. What is the maximum radial component of stress?
a universitys campus has 20000 computers with cathode-ray tube monitors that are powered-up even when the computer is
You are throwing a dinner party and decide to prepare instant Chinese noodles (chicken flavor) for all your guests. From the cooking instruction on the back of the package, you determine that you will need to bring 44 cups of water to a boil for your..
a flat plate of width 1 m and length 0.2 m is maintained at a temperature of 32degc. ambient fluid at 22degc flows
Find the needed length of the heated section of the tube and find the temperature of the water when it exits the heated section of the tube.
a consider the steady operation of a refrigeration package for a shipping container on a train truck or ship. the
Chromium and Nickel in Welding Fumes
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