202 DAIRY TECHNOLOGY 



All ammonia and brine pipes passing through rooms 

 where refrigeration is not desired should be covered with 

 insulation two inches thick for temperatures of zero or 

 below, and one to one and a half inches for higher 

 temperatures. 



According to the H. W. Johns-Mansfield Co., there is a 

 loss of nine tons of refrigeration on account of radiation in 

 24 hours on 500 feet of 3^ -inch brine pipe with temperature 

 of zero and outside temperature of 70 F. Figuring the 

 cost of refrigeration at 50 cents per ton, the loss would be 

 $4.50 per day of 24 hours. 



