Modeling Loss-of-Flow Accidents and Their Impact on Radiation Heat Transfer

Table 2

Emissivity coefficients of NbC and ZrC.

	NbC	ZrC
Temperature range (K)	1700–2200	1700–2200
Polished surface	0.79	0.9
Rough surface	0.79	0.9
Thermal treatment	0.72	0.9
Hydrogen exposure	0.71	0.9