in Explosions of Coal-pas and Air. 



325 



Table V. — Rate of Heat-loss by Conduction in 15 per cent., 

 12*4 per cent., and 9*7 per cent, mixtures of Coal-gas 

 and Air. 



Mean 

 Gas 



Temp. 

 (° C. Rbs.). 



Eate of Heat-loss by Conduction per 



sq. cm. of Wall-surface. — Calories per sec. 



1 



15 % Mixture. 124 % Mixture. ■ 97 % Mixture. 



2440 



87 



! 



2400 



7-9 







2200 



50 







2050 



3-8 



4-1 





2000 



34 



3-7 





1800 



2-4 



2-5 





1660 



1-9 



19 



21 



16U0 



1-7 



1-7 



1-8 



1400 



1-2 



1-2 



11 



Fig. 



\ 













\ 



\*- c 4 















^r- (9-300) 



4 













\\^'< 





^97 











(6-3QO)- 3 



^^ 



££ 2600 2400 2200 2000 1800 1600 1400 



Mean Gas Temperature — °C. abso/ute. 

 230O 2100 1900 1700 1500 1300 n00 



Approx. Difference of Temperature between Gas & Vessel 

 Walls CO -300), °C. 



Curves showing Rate of Loss of Heat by Conduction per sq. cm. of 

 Wall-surface per sec. in lo'O per cent., 12*4 per cent., and 9*7 per 

 cent, mixtures of Coal-gas and Air. 



