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A natural gas (methane) pipeline is to be designed to transport the gas at a rate of 50,000 scfm. The pipe is to be 6 in. ID, and the maximum pressure that the compressors can develop is 10,000 psig. The compressor stations are to be located in the pipeline at the point at which the pressure drops to 100 psi above that at which choked flow would occur (this is the section pressure for the compressors). if the design temperature for the pipeline is 60 F, the compressors are 60% efficient, and the compressor stations each operate with three stages and inter stage cooling to 60 F, determine ( a ) The proper distance between compressor stations, in miles. ( b ) The optimum inter stage pressure and compression ratio for each compressor stage. ( c ) The total horsepower required for each compressor station.
A 5.23 ft3 rigid tank contains saturated refrigerant-134a at 100 psia. Initially, 12 percent of the volume is occupied by liquid and the rest by vapor. A valve at the top of the tank is now opened, and vapor is allowed to escape slowly from the tank...
For plain carbon steel and convection (h=50 W/m^2 K) to air at 500K, Ti=300k, with a slab geometry 0.2 m thick (2L), find Boat Number. For a Fourier number (based on l=0.1m) of 0.1, is the tearm series valid? Find the time
an air-conditioning unit with a coefficient of performance of 2.93 provide 5000 btuh of cooling while operating during
two tanks are connected by a valve. one tank contains 2 kg of carbon monoxide gas at 77 oc and 70kpa. the other tank
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a gas expands in a piston-cylinder assembly from p1 8.2 bar v1 0.0136 m3 to p2 3.4 bar in a process during which the
a small water droplet of diameter d100 micro meter and temperature tmp 0 deg c falls on a nonwetting metal surface
suppose a pair of rolling element bearings is being considered as the support for the front wheel of a bicycle. the
steam enters an adiabatic turbine at pressure 6 mpa temperature 600oc and velocity 80 ms and leaves at pressure 50
saturated liquid water at 1 kgs and 200 kpa is mixed steadily with 4 kgs of water at 200 kpa and 200ordmc with the goal
a steam power plant operates on the ideal reheat rankine cycle. steam enters the high-pressure turbine at 8 mpa and 500
for a piece of material the steady-state flow across its thickness is 0.297 10-3 kgm2 h. if the concentration on the
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