70 



SwivKTiiNKD Condensed Milk — Condensing 



brass, equi]iped with a spray jet, through which the coohng water 

 enters the condenser. The vapors being drawn over from the vio- 

 lently boiling milk in the pan, are condensed by passing through this 

 spray of cold water. This condenser discharges its water into a 



Fig. 21. Vacuum pan with dry vacuum barometric condenser 



Courtesy ot Arthur Harris & Co. 



tight cistern in the ground. The condenser is placed so that its bot- 

 tom flange is about thirty-five feet above the water level of the cis- 

 tern in which the discharge pipe from the condenser terminates. The 

 height of the condenser depends on the barometric pressure of the 

 location where it is installed- The lower the altitude and, therefore, 

 the higher the atmospheric pressure, the higher must the condenser 



