Table 1 .--Effective heating number. 



Test : Particle 



identification ■ thickness : : : ^A^B : ig : ^ig : £ 



Cal./g. °C. oal./g. 



1 0.6 108 ! 84* 193 340 189 0.51 



2-R .6 94 75 169 300 164 .52 



2-L .6 94 71 165 300 164 .50 



3 1.3 75 19 94 380 216 .22 



4 1.3 72 20 93 330 183 .25 



* Value is obtained by assuming that the ratio between the two values of 

 for the 0.6-cm. specimens is equivalent to the ratio of the values of Qg where the 

 known Q is an average of the R and L (right and left of transverse member) values. 



1.0 



Figure 7.--A curve of e 3 

 the effective heating 

 number s versus the re- 

 ciprocal of o } the 

 surface area-to- 

 volume ratio. Since a 

 = 4/t 3 the abscissa may 

 be viewed as one-fourth 

 the thickness of the 

 particle. 



.8 - 



.6 - 



.4 - 



.2 - 







l/o,c 



m. 



13 



