362 Oxygen-Enhanced Combustion
14.6.3.1 Nonluminous Radiation
Nonluminous radiation plays a signicant role in
transfer and distribution of heat in a combustion sys-
tem.
102
CFD codes that can accurately model nonlumi-
nous radiation process can greatly assist in the design,
development, operation, and optimization of industrial
combustion equipments suitable for oxy-fuel ring.
The nonluminous radiation is a result of transitions
between vibrational and rotational energy states.
112
The
major products of hydrocarbon combustion, that is, CO
2
,
CO, and H
2
O, interact with radiation by absorption and
emission and have strong absorption bands in the spec-
trum at temperatures relevant to combustion. Species
like nitric oxides, sulfur oxides, and metha ...