If it were possible to vary the off coil temperature during the cooling cycle of direct expansion equipment wouldn this have the same advantage as using a chilled water system?
It is possible to vary the off coil temperature using the direct expansion equipment by the use of ‘hot gas bypass’ and this would make it acceptable for displacement. There are a few manufacturers that modify their equipment for ‘hot gas bypass’ using larger compressors, and this equipment may be applied to displacement ventilation.
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