Chapter 3- Conservation of Mass Part1

# Thus ideal gas law n p v r t exit 400 f t3 283

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Unformatted text preview: serva1on of mass in the speciﬁed CV: where we have used: Convenient Forms for Axiom 1 ? Convenient Forms for Axiom 1 Assume constant CV Deﬁne average density at exit Deﬁne average density START AXIOM 1 Deﬁne volumetric ﬂow rate at exit Convenient Forms for Axiom 1 Assume constant CV Deﬁne average density START AXIOM 1 Deﬁne mass ﬂow rate at exit Example CalculaKon Consump1on rate of propane: ˙ Q exit = 400 scf per day V=250 gallons with 750 kg propane at P=95 psi (gauge) Propane Tank Ques1on: how long will it take to empty the tank? Deﬁni1on for scf: a standard cubic feet at 760 mm Hg and T=298.15K; Note: scf is a convenience unit for the number of moles of an ideal gas. Thus: (Ideal gas law) n = P V /R T ˙˙...
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## This note was uploaded on 04/11/2013 for the course CHEMISTRY 3 taught by Professor Brian during the Spring '13 term at UC Davis.

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