ECONOMICAL USE OF FUEL IX CREAMERIES. 



SO 



The results shown in Table 1 have been plotted in the form of 

 curves in figure 1. Curve No. 1 represents the average number of 

 pounds of coal consumed per 1,000 pounds of butter made in 20G 

 plants whose outputs vary from 45,000 to 1,000,000 pounds of butter. 

 Curve No. 2 represents the average of the number of pounds of coal 

 of 72 of the best equipped and managed plants, and curve No. 3 the 

 average of 37 of the 

 poorest equipped and 

 managed plants. 

 These curves are plot- 

 ted from the average 

 fuel consumption of 

 the total number of' 

 plants. 



Attention is called 

 to the fact that in 

 curves 1 and 2 very 

 little difference is 

 shown between the 

 groups of creameries 

 making 250,000 

 pounds and those 

 making 350,000 

 pounds of butter an- 

 nually. Curve 2, rep- 

 resenting the best 

 practice, is practically 

 vertical between 250,- 

 000 and 3 5 0,0 00 

 pounds of b u 1 1 e r 

 made, showing that 

 between those limits 

 the fuel consumed in 

 the better plants is 

 practically the same 

 per 1,000 pounds of 

 butter made. Curve 

 1, which shows the 

 average full consump- 

 tion of all the creameries, gives only a slight increase in the quan- 

 tity of fuel between creameries of those sizes. The poorer equipped 

 and managed plants, as illustrated in curve 3, however, show a 

 decided increase in fuel used per 1,000 pounds of butter made in 

 the plants making between 250,000 and 350,000 pounds, the increase 

 averaging about 300 pounds of coal per 1,Q0Q pounds of butter. In 



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Fig. 1. — Curves showing the variation in coal used for 

 1,000 pounds of butter made in steam-driven, plants of 

 different sizes — (nonpasteurizing plants). 



