44 CONSTRUCTION OF CREAMERIES 



the year, must be held for several days before shipment can be 

 made. This holding must be done in a cool or cold atmosphere 

 in order to retard deterioration. 



The cold room must be properly insulated, preferably with 

 cork board or similar efficient insulating material, at the bottom 

 under the concrete floor, at the sides and in the ceiling. The floors, 

 walls and ceilings, doors and windows, besides being insulated, 

 must be tight. A poorly insulated cold room, of loose con- 

 struction and ill-fitting doors, Avastes cold and fails to adequately 

 protect the butter. 



The cold room must be dry. A damp or wet cold room 

 is a prolific breeding place for molds. In order to insure free- 

 dom from dampness, the drips from the melting ice or from the 

 sweating brine pipes, or ammonia coils, must be carried off with- 

 out leakage, and such circulation of air must be provided as 

 will cause the moisture in the air to condense over the ice or 

 cooling coils. 



_, . For this purpose, the ice rack or the cooling coil rack must 

 be located over a water-tight pan which discharges the drips 

 into a suitable receptacle or to the outside of the cold room. 



Proper circulation of the air is provided by equipping one 

 side of the ice rack or cooling coil rack with a baffle board that 

 extends from the drip pan to within a short distance from the 

 ceiling. The warm air, which is charged with moisture is lighter 

 than the cold air. The warm air rises to the top of the baffle 

 board and passes over the ice or cooling coils where it con- 

 denses its moisture, and the cooled dry air drops down into 

 the cold room from the other side of the drip pan where there 

 is no baffle board. This produces a constant and efficient circula- 

 tion of the air in the cold room, removing the moist air and 

 replacing it by dry air. 



Bath Room. Every up-to-date creamery should have 

 suitable and adequate toilet and bath room facilities. The neces- 

 sity of this essential is self-evident. 



Heating. Suitable arrangements should be provided to con- 

 trol the temperature in the factory. In localities with cold 

 winters the heating is usually best done by the use of exhaust 

 steam. Where the machinery is driven by electric power and 



