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9
Single Duct, Variable Air Volume
Single Duct, Variable Air Volume has a central boiler and chiller plant. Air is drawn to a fan room, conditioned and distrubted. Air-volume is controlled by a thermostat (with VAV terminal) at each outlet. Air is exhausted and reused.
Conditioning depends on the volume of air entering the space. It is the most versatile and common system as it is a relatively cheap method for good temperature control and is economical to operate. It virtually self-balances, but has a limited range of heating and cooling. It also cannot simultaneously heat and cool two areas.
A large amount of space is needed for ductwork. They are typically used a building perimeters with large temperature difference.
Conditioning depends on the volume of air entering the space. It is the most versatile and common system as it is a relatively cheap method for good temperature control and is economical to operate. It virtually self-balances, but has a limited range of heating and cooling. It also cannot simultaneously heat and cool two areas.
A large amount of space is needed for ductwork. They are typically used a building perimeters with large temperature difference.
