MTX221 - Thermodynamics: The Second Law of Thermodynamics Summary
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Course
Thermodynamics (MTX221)
Institution
University Of Pretoria (UP)
A theory summary was made about the Classical Second Law of Thermodynamics. This summary contains information about Heat Engines, Refrigerators and Heat Pumps, Kelvin-Planck statement and Clausius statement.
Classical Jecond Wof Thermodyna miS
nof dlCYcles_Phdt abide by Hhe first JaW dre dble fo occur
For d Cycle o ocuur it needs todtisfy both drd dW
experimental e Vioente
not yet been dispro ved
HeaF ehqinej dhd refngerator
7 Hedt pumps
HedF engihes Helrige rdkors
COr eng ines
Airton
dirpl9ne engines tioge
coq qds Fired poWer HVAC
lons
( wor Heat trgnsfor dgainst tenMp
(tHed FrnSfer drctodient
Treatef work tworit outputt}
Pea enqiner
Pfoodces ne poJItiVe Work Wh net pojitiVE hed ranster
conveSvS hed to UeFu Work
Trqns Fering hedr from high to d low He mp body
TH
piSton type hedf engne_
-
liF veiqht from d high
fo /ow level
L Stedmponer pl9ht () ycle
TL
Qu and H lvnayj q vlue Bo7ler
Tut bine
pump Wnet
Conge nse
L
, eblb039
The rmal efhicie ncy
Rdtio 0f onergy Soucht to energy Phd (oSTS
Aod nq ine
Ihe inal_W Outouk higher:better
input
Te mp Source
ne rg ybdlahte
E W GHQ
hteral
GH
GH
#energy tejected L cdte
Fue Consu mptjon GH
Refriotergker /Hedt pumps Neod nvork (Nork 10put
Hed pump Frr dde
TH
H oenerg
w
QL
*****
T T
cools a reqjon
***
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