Gas-Engine Indicator-Diagram. 

 Table III. — Coal- Gas before Combustion. 



63 



Constituent. 



Amount 

 in fluid. 



Specific 

 heat at 

 constant 

 pressure 

 per unit 

 volume. 



Specific 

 heat at 

 constant 

 volume 

 per unit 

 volume. 









Cubic feet. 

 2- 



G P . 



c v . 



qC p . 



gc . 



Hydrogen 



0-46 



0075 



0-3950 



00380 



0-0050 



0200 



5-76 



4-5 



•2359 



•237 



•3277 



•4106 



•237 



•2984 



•2374 



•2581 



•99 X- 

 1 



1-54 , 

 2-03 , 

 1 



1-36 , 

 1 , 

 1-124 , 



168 



•1085 

 •0178 

 •1294 

 •0156 

 •0012 

 •0060 

 1-3680 

 1-1614 



•4554 X -168 

 •0750 „ 

 •6082 „ 

 •0771 „ 

 •0050 „ 

 •0272 „ 

 5-760 „ 

 5-058 „ 



Carbon monoxide 

 Marsh-gas 



defiant gas 



Nitrogen 



Water-vapour . . . 

 Air 







Total 



11-253 







2-8079 



12-066 X-168 

 or 2027 





Or C^O-2498, C„=0-1802. Ratio 1-385. 



Table IV. — Coal- Gas after Combustion. 





Cubic feet. 



C P . 



Co. 



qC p . 



qCv 



Water-vapour ... 

 Carbon dioxide . . . 

 Nitrogen 



1-3714 

 0-5714 

 45554 



•2984 

 •3307 

 •2370 



1-36X-168 

 1-55 „ 

 1 



•4092 i 1-865 x-168 

 •1889 | -8855 „ 

 1-0790 4-5554 „ 





Total 









16771 



7-3059 X-168 

 or 1-227 





Or C p = 0-2581, C„ =0-1889. Ratio 1-367. 



Table V. — Dowson Gas before Combustion. 





Cubic feet. 



Op. 



c v . 



<A>. 



qC v . 





•1873 

 •2507 

 •0031 

 •0031 

 •4898 

 •0657 



11325 



2 



•2359 



•237 



•3277 



•4106 



•237 



•3307 



•2374 



•2594 



•99 X-168 

 1 



1-54 „ 

 2-03 

 1 



1-55 „ 

 1 

 1-1323 „ 



•0442 

 •0594 

 •0010 

 •0013 

 •1161 

 •0217 

 •2H89 

 •5188 



•1854 x-168 

 •2507 „ 

 •0048 „ 

 •0063 „ 

 •4598 „ 

 •1018 , 

 1-1325 „ 

 2-2646 „ 



Carbon monoxide. 



Olefiant gas 



Nitrogen 



Carbon dioxide . . . 

 Air 







Total 



4-1322 







10314 



4-4359 x-168 





•2496 



10735 x-168 

 or -1803 



Ratio 1-385. 



