380 COOLING r'ACILITlES I'OK CRK/\MKRIES 



The expansion-coils pass through the brine- tank and cool 

 the brine. Special pumps force the cold brine through j)ipes 

 to the cream vat, cooling coils, ice-cream freezer, etc. 



For creameries the brine system is the only practical system. 

 It is preferred because, first, cold can be stored in an insulated 

 brine-tank and used at will without running the compressor. 

 (In case of a prolonged stoppage due to some accident a brine 

 made by a mixture of ice-water and salt could be temporarily 

 substituted); second, less ammonia is required to charge the 

 system; third, fewer couplings and less ammonia pipes are 

 necessary. This latter would decrease the danger of ammonia 

 leakage and cost of pipes. 



