EGGS IN COLD STORAGE. 



39 



false partition and the side wall of the room, thus 

 displacing- or pushing- along- the air in center of room, 

 the cold air naturally seeking- the lowest point and the 

 warm air the hig-hest point, each by reason of its rela- 

 tive gravity. Thus as the cold air falls from the cool- 

 ing- surfaces it is replaced by the warm air from 

 hig-hest point in center of room. This secures a 

 natural circulation and a dry room, there being- no 

 counter-currents nor tendency to precipitate moisture 

 on walls or ceiling-." 



Fie-. 6 is the St. Clair or pipe loft system, which st. ciair, or 



i_ 1-jj j i j t. j Pipe loft 



has been applied to many remodeled overhead ice system, 

 cold storag-es, by placing- the pipes in a part of what 

 formerly was the ice space, and, in some cases, using- 

 the original air ducts for circulation. The sketch 

 here shown represents one room only, but as many as 

 five or six different floors have been operated from a 

 single pipe loft, using- one main air duct for the down, 

 and one for return air circulation, each floor having- a 

 connection with the mains in which the flow of air is 

 reg-ulated by g-ates. A better arrang-ement, when 

 more than one floor is to be operated on this system, 

 is to have independent ducts for each room, and the 

 cooling- coils separated likewise; then any room or 

 rooms may be used for other products at any time 



