.4 



in 

 E 



• Ponderosa pine 0.28 



□ White pine 



<> Lodgepole pine 



0. 16 



1^ 



nil ffi 



••a 



J. 



J. 



J- 



8 10 12 14 16 



Fuel moisture content ( percent) 



20 



22 



F-igure 4. — Flame emissivities for fives in three fuels at the same environmental 

 conditions were determined from heat flux sensor measurements. 



1.0 

 .9 



.8 



.7 

 .6 



.3 - 



.2 - 



I - 







• Ponderosa pine 

 □ White pine 

 O Lodgepole pine 



<i> 



□ 



J. 







8 



10 



14 



16 



18 



20 



Fuel nnoisture content ( percent) 

 Figure 5. — Portion of total heat .flux aontrihutable to radiant heat flux. 



22 



12 



