80 



SWEETENED CONDENSED MILK CONDENSING 



distributes it evenly over the perforated spray plate. The vapor 

 rises into the vapor tube of the condenser and is drawn over 

 into the spray chamber surrounding it, where the vapor is con- 

 densed by the spray of water issuing from the perforated spray 

 plate which tops the spray chamber and which contains a large 

 number of very small holes. As the water falls through these 

 openings by gravity, the spray is uniform and constant and does 



Fig 1 . 28. Vertical spray condenser 



Courtesy of C. E. Rogers 



not depend on the amount of water used, nor does it require 

 water pressure on the condenser. A complete sheet of spray al- 

 ways is formed, through which the vapors must pass, regardless 

 of the amount of w r ater used, a fact which assists in the efficient 

 use of the water and in rapid and complete condensation of the 

 vapors. Manholes with covers are located at the top to facili- 

 tate the cleaning of the spray plate, 



