Air-conditioning is a process that simultaneously conditions air; distributes it combined with the outdoor
air to the conditioned space; and at the same time controls and maintains the required space’s temperature,
humidity, air movement, air cleanliness, sound level, and pressure differential within predetermined
limits for the health and comfort of the occupants, for product processing, or both.
Refrigeration is the cooling effect of the process of extracting heat from a lower temperature heat source,
a substance or cooling medium, and transferring it to a higher temperature heat sink, probably atmospheric
air and surface water, to maintain the temperature of the heat source below that of the surroundings.
air to the conditioned space; and at the same time controls and maintains the required space’s temperature,
humidity, air movement, air cleanliness, sound level, and pressure differential within predetermined
limits for the health and comfort of the occupants, for product processing, or both.
Refrigeration is the cooling effect of the process of extracting heat from a lower temperature heat source,
a substance or cooling medium, and transferring it to a higher temperature heat sink, probably atmospheric
air and surface water, to maintain the temperature of the heat source below that of the surroundings.
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