AIR COMPRESSORS 



53 



is 96 Ib. The actual amount of free air delivered is 122 cu. 

 ft. per min. The volumetric efficiency is 81 $%. The steam 



PIG. 2 



consumption is 18i Ib. per 100 cu. ft. of free air and the dis- 

 placement is approximately 149 cu. ft. per min. 



