Monday, October 20, 2014

1–50E

1–50E A pressure gage connected to a tank reads 50 psi at
a location where the barometric reading is 29.1 mm Hg.
Determine the absolute pressure in the tank. Take rHg
848.4 lbm/ft
3
. Answer: 64.3 psia
1-50E A pressure gage connected toa tank reads 50 psi.The absolutepressure inthe tank istobe determined. Properties The densityof mercuryisgiven tobe ρ= 848.4 lbm/ft 3 . 50 psi Pabs Analysis The atmospheric (or barometric) pressure can be expressed as psia 14.29 in 144 ft 1 ft/s lbm 32.2 lbf 1 ft) )(29.1/12 ft/s )(32.2 lbm/ft (848.4 2 2 2 2 3 atm =             ⋅ = = h g P ρ Thenthe absolute pressure inthe tankis psia 64.3 = + = + = 14.29 50 atm gage abs P P P

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3 comments:

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