CHAPTER XI. 
COLD STORAGE. 
An efficient cold storage is an indispensible asset in 
the manufacture of ice cream and in the proper handling 
of market milk and cream. ‘Too many try to economize 
in first cost at the expense of insulation. This is false 
economy because money spent in securing thorough in- 
sulation will save enough in ice or refrigeration to pay 
for the extra cost in a short time. 
The accompanying illustration (Fig. 35) shows a 
method of construction which has been found very 
satisfactory, especially in larger plants. It will be 
noted that the walls, floor and ceiling are insulated 
with cork, which is one of the best of insulating 
materials. It is necessary, however, to use every pre- 
caution to keep the cork free from moisture. Thorough 
treatment of the surface with asphalt will render it prac- 
tically waterproof. Two thin layers of cork are pre- 
ferred to one thick layer because the breaking of joints 
prevents leakage at the edges. 
The inside walls and any partitions are constructed 
of four-inch hollow tile lined with two courses of 1% 
inches of sheet cork. 
Anteroom. Cold air is relatively heavy and when 
the storage doors open directly into a large warm room 
the air rushes out as though it were water, causing a 
considerable loss of cold. Such loss can be prevented 
to a large extent by providing an anteroom, which is 
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