ICE SUPPLY 



A trapped drain is provided to carry away the water 

 from the melting ice and at the same time prevent the cir- 

 culation of air. This drain may be made as shown in the 

 illustration, or some commercial form of trap may be in- 

 stalled. The space above the trap should be filled with 

 gravel and this in turn covered with straw to prevent any 

 possibility of trash being washed into and clogging up the 

 drain. 



The doors should be well built and tightly fitted. The 

 edge of the doors or casings against which they close should 

 be covered with felt. A good clamp should be provided 

 for each door so that an air-tight joint will be formed w r hen 

 it is closed. A built up door of 2-inch material is placed 

 next to the ice and the space between it and the outside door 

 packed with shavings. 



Where ice is expensive and the storage season long, it 

 will probably be found more economical to use some better 

 grade of insulating material. 



A COMBINATION ICE HOUSE AND COLD 

 STORAGE ROOM 



Plans for a combined ice house and cold storage room 

 are shown in Fig. 4. This type of ice house operates on 

 the same principle as a refrigerator. The cold store room 

 is kept at practically the same temperature as that of the 

 ice storage room, due to the continual circulation of air. 

 This circulation is caused by the difference in the weight of 

 air at various temperatures. The warm air from the cold 

 store room rises to the ceiling and then passes up between 

 the studding of the partition and out over the ice in the ice 

 storage room where it gradually becomes colder and heavier. 

 The cold air surrounding the ice flows out between the floor 

 joist of the ice storage room into the cold storage room, and 

 gradually rises as it is warmed and finally passes back into 

 the ice storage room. This circulation is kept up as long 

 as there is any difference in temperature between the two 

 rooms. 



Seventeen 



