What is a 'Variable Air Volume' (VAV) system and how does it differ from a 'Constant Volume' (CAV) system?
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A
VAV varies supply air temperature; CAV varies supply air volume
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B
VAV varies supply air volume to each zone while maintaining constant supply temperature; CAV delivers constant air volume at varying temperatures
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C
VAV uses variable speed drives on chillers; CAV uses fixed-speed chiller compressors
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D
VAV serves commercial buildings; CAV serves residential buildings only