Constants and Conversion Factors - High Temperature Air Combustion: From Energy Conservation to Pollution Reduction - page 382

TABLE B.1 (CONTINUED)
Meanings of Symbols

Symbol Meanings

E energy

E S activation energy of the specimen

E x exergy

f v soot volumetric fraction

f s nondimensional combustion rate

F ij shape factor

g concentration fluctuation intensity

G Gibbs free energy

Gr Grashof number

h convection heat transfer

h i enthalpy

h rad heat transfer coefficient

H enthalpy

H 0 calorific value of fuel

H a sensible heat of preheated air

I spectral intensity of radiation

I soot total radiance from soot only

k reaction rate constant, turbulence energy

k ν k ν

, spectral absorption coefficients of soot and gas

K gross heat transfer coefficient of heat exchanger

K complement number of material transfer factor in Equation 2.34

K m overall coefficient of heat transfer coefficient

L length of heat exchanger in Chapter 3, optical length of nonscattering media in

Sections 2.5.3 and 3.3, zone length in Chapter 5

L m length of heat exchanger

m i molecular weight of i th species

M mass weight

P e pressure parameter in Equation 2.22

Pr Prandtl number

Q heat flow rate

Q f heat of formation of fuel

Q rad radiative heat transfer

r T temperature ratio

r λ monochromatic reflectivity of spectrum λ .

R gas recycling rate in Sections 1.2.1 and 2.2, gas constant

R D radial position

Re Reynolds number

t time

T temperature

T at atmospheric temperature

T cold initial temperature of fuel and air

T f max maximum temperature in the furnace or flame

T fw wall temperature of furnace

T out flue gas temperature