Internal sources of heat.
The main sources of the internal heat of the fan motors and circulation pumps. Where motor inside the refrigerated premises, gross energy engine inlet is released as heat that must be removed. Where the motor behind the window, only the shaft power is taken.
Other engines and tractors, may be present - conveyors, lifts, loaders, mixers, pumps, injection, packing machines and other Gross input power of these machines can be read with their names or find manufacturers.
Every person in the cooled space is a load of approximately 120 watts of lighting in the space must be included on the basis of the gross input. The usual 80 watts of lighting a lamp that there are around 100 W (gross). Where the lighting heat input load shows that the greatest part of all, it is probable that the lighting system was poorly designed, and some changes may be needed. Where refrigerators are equipped with devices to defrost, heat input from this source must be defined...
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Refrigerated transport