Can the one Air Handling unit serve all of the perimeter terminal active chilled beams for a floor?
This is not the ideal solution. The best method is to zone the AHU’s to serve each exposure and the interior zones. This will enable the primary air temperature to be reset to suit each zones requirement. If separate air handlers by exposure are not possible, there is a potential for overcooling some rooms at low part loads while others are at their design cooling loads. One approach is to add reheat coils to the duct system serving each perimeter exposure. Another (often more preferable) approach is to provide a sensible heat recovery wheel downstream of the air handling unit in order to provide close the thermally neutral dry primary air to the active chilled beams. The room neutral dry air will be able to handle the room latent loads and the sensible load will be handled entirely by the active chilled beam. This method will minimize the times that you would potentially need to reheat the primary air. Yes you will be adding additional static to the AHU fan but this is far better than
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