MECHANICAL REFRIGERATION 



197 



SHOWING PROPERTIES OF SOLUTION OF SALT. (Siebly.) 

 (Chloride of Sodium.) 



PROPERTIES OF SOLUTION OF CHLORIDE OF CALCIUM. 



(Siebly.) 



Use of Brine. — For all general cooling purposes, the 

 brine system is more economical and satisfactory because 

 the brine may be kept cold by running the compressor 

 just a few hours each day. The cold is stored and used 



