344 



cox. 



w/'/^i^y'///rf/'/>'.-////l'.W^^JW^if^T:' 



Fis. 2. — luEAi, Section Showixg Additional Baffle Wall and an Elongated 



FiEE Box. 



In the plant of this Bureau, Australian coal burns to a large extent 

 on the grate, while most of the Philippine non-coking coals containing 

 high volatile matter are at a disadvantage, as the}' burn to a very much 

 greater extent in the combustion chamber. An inspection of the fore- 

 going tests of the coals from Australia ( Westwaldsend) , Batan Island 

 (Military Eeservation and Betts'), and Cebu (Comansi) \yill show that 

 our boiler-plant is unfavorable to Philii^pine coal. This may the more 

 readily be seen from the following table: 



Table V. 









Equivalent 









evaporation of 





Calorific 



Equivalent 



water from 





value of 



evapora- 



and at 100° C. 





the com- 



tion of 



per kilo of 





bustible in 



water from 



combustible 





calories 



and at 



actuallv con- 



Source. 



as deter- 



100° C. per 



sumed, anti- 





mined in a 



kilo of 



cipated from 





Berthelot- 



combus- 



the calorific 





Mahler 



tible 



value when 





bomb calo- 



actuallv 



Australian 





rimeter. 



consumed. 



coal is taken 

 as the base of 

 comparison. 



Australian: (Westwaldsend); average of tests 1, 2, and 









3, Table n..__ 



7,791 



8,688 



8,688 



Batan Island: 









Military reservation; average of tests 10, 11, 12, 13, 









and 14, Table II „ „ 



7,166 

 6,297 



6,773 

 6.698 



8,000 

 7,020 



Betts'; average of tests 15 and 16, Table II 



Cebu (Comansi); average of tests 17 and 18, Table 11 



7,207 



7,122 



8,0J0 



Polillo; test 19, Table II 



7,858 





8.210 







