Written by students who passed Immediately available after payment Read online or as PDF Wrong document? Swap it for free 4.6 TrustPilot
logo-home
Document preview thumbnail
Preview 1 out of 1 pages
Other

Ideal Gas Laws Cheat Sheet

Document preview thumbnail
Preview 1 out of 1 pages

Topics Covered: -Phase changes, quality (x), and two-phase mixtures -State principle and ideal gas assumptions -Specific internal energy (u), enthalpy (h), and heat transfer -Property table usage (A-20 to A-23) explained -Constant volume & pressure processes -Isothermal, Adiabatic, Isobaric, and Polytropic work -Specific volume and compressibility -Closed-system energy balance formulas

Content preview

Phase-city matter homogenous chemicalphysical I
fied properties missing "Ideal gas find change
given
T u
: P V
Table
in

enthoh <po
uniforminvariable chemical composition
, ,
A-20 =

Pure subt -



P u :
T& cal X V
given
.

mc , Ur
KE/kg K
,

cpeT &Tz-avgCpY
, ,
:



Can exist phases but chemical remains tall
phases
.
in multiple same
2 Sh argcp (st) 155/1g
=
AV = 0 &
=
W = 0
rigid Vessel
=

Simple Compressible Sytm-commonly pure
subt.can be described

by intensive propt, VF =
VLig
for heat need Cak Mi far X
Table A-23 molar based

Vg =
Vap
↳ Q
use
specific valey for u
Cp@T, T2 h =
/Imol
State Principle
=
su
sh sh[molar]
for any Lindp intensive propt def values
Values K5/kmal- Sh
-

=
> =



(T V) G(P V) NOT (T P) -Particularly as
. .
,


,

of all other intensive propt .
, , ,
Cal
eng .

transferred by w & Q
for cylmde ulpiston


Hi ·nade
(x) for 2ph Lig-vap
Qualitytotal
: mix
,
ratio
of mass
of vapor present to v, m
,
P , if 5
cycledeal gas find W&Q each
proce
mixture mass
of Isobaric Q =
1 u + w
.




O-sat Lig
I- sat
use A-22(3) for u. 242
Meigt Muap
vap
lbfift [I] [R
&




Adiabatic Q = G

VL 14
=
Property
=
W
chart
-




Use Mc
transferred KI
=
wall
=f
m
·



V
= w . =



Total Val : Vi =
Meg +
Mrap
64 ·

Q = Xu + w
Isocaric W = 0

Q
My Mcig + Mrap AU
= =




Specific Val :
VT
Vigap 2 phase Vf
=
< V>
is Vg
Vig Vap Vspf find specific volume MYng
-




Vig (Mg Vi Eg sat
= :
+ mass
V = =
V
,
-




Unig
:


Arap X
vsat-usat-v (l-xf *g Ug -
=

X= Map = X Mtot = =
:




V (1 x) Vig Wrap (Mrap) (Urap my .




+
XVap
= - =




I
Mass-based vapor
fraction : Closed
System Energy Balance : same
for terms u, his

X Ma
e
& D-X) =Oned
Ske + SPE + 34 = Q -

w
bl based mass
function
Specific
(n2 u1)
k -
heat how much heat asarbs/releases
-
W = m -




:
subst
engwhen .




Internal
energy
:
ux
=
(1-X)ucig +
XUrap per unit temp change const Por v

Cp
R) for
> Cv
k =
<P/v
Enthalpy : he =
(l-x)hcg xhrap + ideal
gas
air
Cp-Cv =




15451bfft/maRCabm]
Ideal Gas
R 8 3145/malk com/mai
=



PV RT
.


Polytropic :
pun-const
n = 1 isothermal n = 0 Isobaric
Keyeg
=

TP const
Imd
Isovolum
#
.

= n = C
TRI
F [
=


PV nRT =
p :
#)5 PV MRT
=
Sub
forR TV = const -
> =




specific internal eng depends only Temp u(T) Cp (E)R canstp
rigid tank
·
on u = =




specific enthalpy depends only on
Temp h u(t) + =
RT Cv = (EYR constr
j Pc
total mass const
.




=> m , = mz = m

functionsof Talea -
.


heats both cap
specific Sh Cpst
-




↳..
specific vol
=

=> .
const Vi Vz= = v ⑯

du =
cu(T)dT u(Tz) n(T ) -
= cv(tz 5) - G
Vank
C
.
=
maT m
c p(T)dT h(tz) h(t) < p(tz 5) Utank = V =
m > =
-



dh =
-
= -


2
Vrank
tables to evaluate
changes in
specific internal
eng .
&
enthalpy = Mr =

V
=
Kg total mass


justified where p is small relative to critical press .
(pc) PR >
-
is small
isobars
initial eg
Thermal eff= networ =
1- [t] 1 always (u) internal
energy
① point
of boil-first bubblese
Wifpar
molar based
(h) enthalpy is
② last
drop of water alles
-




Du =
Q -

W PV RT =




Process Au Q W Ideal Isocaric
gas




·
Isobaric Q -

P(Vz vi) -
An + w P(ve-vi) w = P(V =

v. ) w =
PV-PV ,


const P w =
RT - RT

bar x18 Pa
J
=


Isothermal sn
f(T) W Q w= , (n
PV [i]
IPa IN/m ?
=
.
=
const Temp O RT In[k/vis
heat flaw
.
w =




CVAT tables
Isocaric/Isovolumetric Q =




5/kg K
molar based
O
FCV(TdT
·




const Volume Q Su it ,
5




(g) 5/1g
#




Q = mCUST w = 0 Pa =
-
-




Udiabatic inf ⑧ AU su
Spar Ibax10" N/m2
-
-
=




(52 5 ]
=
const G
=
w Cu ·

,




/ Par RT . [] #
(1b] IMPa 4bar
Poly tropic
Au + W W = =
tables w = ·


n= 1


pun
= const w= PlV i (n()
n= 1 w =
PV In 1
1000
enthalpy
, n =



PV-PV V. [Vz P24P entry
qualitydensitytemp
,
RTz-RTi Expansion
,
n> w =
w =
:

1 n n > 1
Compression V, V P2) Pi
-

-
n :

Connected book
 image
Michael J. Moran, Howard N. Shapiro, Daisie D. Boettner, Margaret B. Bailey Fundamentals of Engineering Thermodynamics, 9e WileyPLUS + Loose-leaf
Edition: 2018 ISBN: 9781119391760 Edition: Unknown

Document information

Uploaded on
May 14, 2025
Number of pages
1
Written in
2024/2025
Type
Other
Person
Unknown
$20.99

Wrong document? Swap it for free Within 14 days of purchase and before downloading, you can choose a different document. You can simply spend the amount again.
Written by students who passed
Immediately available after payment
Read online or as PDF

Sold
0
Followers
0
Items
8
Last sold
-



Why students choose Stuvia

Created by fellow students, verified by reviews

Quality you can trust: written by students who passed their tests and reviewed by others who've used these notes.

Didn't get what you expected? Choose another document

No worries! You can instantly pick a different document that better fits what you're looking for.

Pay as you like, start learning right away

No subscription, no commitments. Pay the way you're used to via credit card and download your PDF document instantly.

Student with book image

“Bought, downloaded, and aced it. It really can be that simple.”

Alisha Student

Working on your references?

Create accurate citations in APA, MLA and Harvard with our free citation generator.

Working on your references?

Frequently asked questions