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Nomenclature

Symbol Physical Meaning Common SI Units
AA Area m2
CpCp Constant-pressure specific heat J/kg-K      or     kJ/kg-K
CvCv Constant-volume specific heat J/kg-K      or     kJ/kg-K
ee Total stored specific energy J/kg       or      kJ/kg
EE Total stored energy J       or      kJ
FF Force N       or      kN
gg Gravitational acceleration m/s2
hh Specific enthalpy J/kg        or      kJ/kg
HH Enthalpy J        or      kJ
kk Heat capacity ratio –
KK Spring constant N/m          or      kN/m
KEKE Kinetic energy J          or      kJ
mm Mass kg
PEPE Potential energy J         or      kJ
PP Pressure Pa         or      kPa
QQ Heat J         or      kJ
RR Gas constant J/kg-K        or     kJ/kg-K
ss Specific entropy J/kg-K        or     kJ/kg-K
SS Entropy J/kg         or      kJ/kg
tt Time s
TT Temperature Kelvin  (K)
uu Specific internal energy J/kg          or      kJ/kg
UU Internal energy J          or      kJ
vv Specific volume m3/kg
VV Volume m3
VV Velocity m/s
WW Work W          or       kW
xx Quality of saturated liquid-vapor two-phase mixture –
zz Height m
ZZ Compressibility factor –

 

 

 

Greek Symbols

Symbol Physical Meaning Common SI Units
ρρ Density kg/m3
ηη Efficiency –

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Introduction to Engineering Thermodynamics Copyright © 2022 by Claire Yu Yan is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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