Engineering, 26.10.2020 21:30 Santos7446
12 mol/s O2 at 2 atm and 400K is first compressed adiabatically to 15 atm with a compressor operating at
75% isentropic efficiency, then intercooled to 500K before being sent to a second adiabatic compressor
operating at 80% isentropic efficiency which compresses the gas to 40 atm. Calculate the temperature at
the end of each compression stage, as well as the entropy generated in each stage and the amount of heat
that must be removed in the intercooling stage
Answers: 1
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Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
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Engineering, 04.07.2019 18:20
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Engineering, 04.07.2019 18:20
Air flows over a heated plate àt a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
Answers: 1
12 mol/s O2 at 2 atm and 400K is first compressed adiabatically to 15 atm with a compressor operatin...
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