2.43. The heating of a home to increase its temperaature must be modeled as an open system, because expansion of the household air at constant pressure results in leakage of air to the outdoors. Assuming that the molar properties of air leaving the home are the same as those of the air in the home, show that eneregy and mole balances yield the following differential equation: 1 noieo niwollol srli avisidu Q = -PV“ dt dn dUnori ei norlw dtwoll insluchm tot Here, Q is the rate of heat transfer to the air in the home, and t is time. Quantities P, V, n, and U refer to the air in the home. 20.0 =
2.43. The heating of a home to increase its temperaature must be modeled as an open system, because expansion of the household air at constant pressure results in leakage of air to the outdoors. Assuming that the molar properties of air leaving the home are the same as those of the air in the home, show that eneregy and mole balances yield the following differential equation: 1 noieo niwollol srli avisidu Q = -PV“ dt dn dUnori ei norlw dtwoll insluchm tot Here, Q is the rate of heat transfer to the air in the home, and t is time. Quantities P, V, n, and U refer to the air in the home. 20.0 =
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:zebivong
2.43. The heating of a home to increase its temperaature must be modeled as an open system,
because expansion of the household air at constant pressure results in leakage of air
to the outdoors. Assuming that the molar properties of air leaving the home are the
same as those of the air in the home, show that eneregy and mole balances yield the
following differential equation:
1ot noi221 niwollol arli avislidu v
Q = -PV +n-
dt
dn dUm orli ei norlw
woll insludhm rol 1
dt
Here, Q is the rate of heat transfer to the air in the home, and t is time. Quantities P,
V, n, and U refer to the air in the home. 2 0
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