Symbols Flashcards
1
Q
P
A
Pressure
Pa, N/m^2, bar
Force per unit area
2
Q
T
A
Temperature
K, *C
3
Q
V
A
Volume
m^3
4
Q
v
A
Specific volume
m^3 / kg
5
Q
m
A
Mass
kg
6
Q
n
A
Number of moles
mol
n = m/M where M is molar mass
7
Q
ρ
A
Density
kg/m^3
8
Q
U
A
Internal energy
J
9
Q
u
A
Specific internal energy
J/kg
10
Q
H
A
Enthalpy
J
11
Q
h
A
Specific enthalpy
J/kg
12
Q
S
A
Entropy
J/K
13
Q
s
A
Specific entropy
J/kg.K
14
Q
W
A
Work
J
15
Q
w
A
Specific work
J/kg
16
Q
Q
A
Heat transfer
J
17
Q
q
A
Specific heat transfer
J/kg
18
Q
R
A
Gas constant
J/molK
19
Q
γ
A
Adiabatic index (C_p/C_v)
Dimensionless
20
Q
C_p
A
Specific heat capacity at constant pressure
J/kgK
Heat to raise temp at constant pressure
21
Q
C_v
A
Specific heat capacity at constant volume
J/kgK
Heat to raise temp at constant volume
22
Q
Δ
A
Change in quantity
23
Q
m.
A
Mass flow rate
kg/s
24
Q
Q.
A
Heat transfer rate
W
25
W.
Power (work rate)
W
26
η
Efficiency
Dimensionless
27
COP
Coefficient of performance
Dimensionless
28
k
Thermal conductivity
W/mK
29
h (for heat transfer)
Convection heat transfer coefficient
W/m^2 K
30
σ
Stefan-Boltzmann constant
W/m^2K^4
31
ϵ
Emissivity
Dimensionless
