Table 12.1 is a table of the different types of radiation heat fluxes.
| Flux (W/m2) | Description | Comment |
|---|---|---|
| Emissive power, E | Rate at which radiation is emitted from a surface per unit area | |
| Irradiation, G | Rate at which radiation is incident upon a surface per unit area | Irradiation can be reflected, absorbed, or transmitted |
| Radiosity, J | Rate at which radiation leaves a surface per unit area | For an opaque surface |
| Net radiative flux, |
Net rate of radiation leaving a surface per unit area | For an opaque surface |