﻿Ignition of Gases by Sudden Compression. Ill 



Tables XIV. and XV. contain all the experimental results 

 of the ignition at various temperatures of mixtures of CS 2 

 and air (a) when initially stagnant, and (b) when the fan was 

 rotating at full speed. 



Table XIV. 



Ignition of mixtures of CS 2 and air. Fan stationary. 



Initial pressure (atmospheric) =• 14*60 lb./sq. in. 



Mean apparent value of u y" = 1*332. 



Strength of mixture = 1 part CS^ to 8 parts air by weight. 



No. of 



Compn. 



Initial 



Max. Compn. 



Max. temp. 



Delay 



Cooling 



exp. 



ratio. 



temp. 



pressure. 



y = 1-332. 



obs. 



factor. 



Ei ... 



603 



48-5° C. 



159 lb./sq. in. 



313° C. 



00S6 





E, ... 



5-63 



47*5 



143 „ 



296 



0-115 





E 3 ... 



5-63 



42 



143 



286 



0-18 





E 4 ... 



563 



39 



H7 



281 



0-26 





Eg .. 



5-63 



36 



147 



275-5 



0-35 





E(j ... 



5-63 



32 



145 



268-5 



0-42 





1 E- ... 



5-02 



32 



1265 „ 



248 



No ign. 



0-46 



E* ... 



5-21 



315 



1325 „ 



254 



0-71 





E 9 ... 



5-42 



31-5 



140-5 „ 



261 



0-59 





Eie... 



5-82 



31-5 



154-5 „ 



273-5 



034 





En- 



7-02 



31 



193 



308 



0-087 





Table XV. 



Ignition of mixtures of CS 2 and air. Fan full speed. 



Initial pressure (atmospheric) = 14V6 lb./sq. in. expts. Fi-F 6 . 



= 14-0 



Mean apparent value of 7 = 1*323. 

 Strength of mixture as before. 



Fr-F, 



No. of 



Compn. 



Initial 



expt. 



ratio. 



temp. , 



Ei ... 



633 



43°C. 



F 2 ... 



6-44 



43 



F 3 ... 



6-56 



43 



:f, ... 



663 



42-5 



F« ... 



6-84 



43 



F 6 ... 



7*55 



43 



F 7 ... 



6-56 



43 



F, ... 



7-02 



43 



*Fn ... 



8-02 



43 



F 10 ... 



10-0 



42 



Max. Compn. 

 pressure. 



169 lb 

 171 

 177 

 178 

 185 

 208 

 175 

 191 

 224 

 ? 



/sq.in. 



Max. temp. 

 calc. from 

 7=1-323. 



300° 



304 



307 



309 



315 



334 



307 



320 



346 



391 



Delay 



Cooling 



obs. 



factor. 



No ign. 



i-3o ; 



014 



— 



Noign.(?) 



1-38 



0-13 



1 



012 



— 



005 



— 



011 



— 



0-09 



— 



003 



— 



Ignit'd bc- 







fon top of 





compn. 





Mom 



I -34 



The cooling curves were very uniform in the above cases. 



