Calculating Reheat Capacity - For Humidity Control

[nevinjohn]

Have you thought of using a 3 port control valve on the chilled water circuit so that you can regulate cooling capacity to load?

Hmm... that is a possibility. But, what would you suggest if the client insists on a reheat?

As per the present control philosophy, humidity control overrides temperature control. Currently, even though the room temperature set point is reached, the RH is high. This calls for the valves to fully open supply to the AHU, and 'dehumidify' the air. Although dehumidification happens at the coil, I end up with a higher RH in the room!! So that 'philosophy' is not helping me. .