BOILER No. 5. 



79 



Dimensions of Boiler No. 5. 

 Diameter of each shell, . 

 Length between heads and length of tubes, 

 Number of tubes three inches 

 Area of heating surface, 

 Area of grate surface, 

 Area through tubes, 



Width of air spaces and metal bars in grates, 

 Distance of grate to shell, 

 Distance of bridge wall to shell, 

 Ratio of heating surface to grate surface, 

 Ratio of grate surface to tube area, 



Results of Tests. Boiler No. .5 



NOTE. The mixed fuels were wet before firing with 5 per cent, of their weight of 

 water. 



