A recent concern has been flagged by me in regards to a chilled water system I balanced that has several large coils piped in a "parallel flow" arrangement as opposed to the typically found "counter-flow" arrangement.
Complaints now from the building management is that high humidity levels in the building are causing doors to swell and bind,along with comfort complaints of "cold and clammy" which I feel is directly related to the "parallel piping at the coils" not removing the proper amount of latent heat and carrying the high moisture levels to the occupied spaces.
The recommend "cure" by the controls contractor is to simply reduce the discharge air temperature from 55 to 50 and that will solve that problem.
My concern is that lowering the discharge temp by 5 degrees will "help" the high moisture levels, but will not cure it. I also think that "over-cooling" complaints will result in applying this bandaid fix to a proplem related to coil piping arrangements.
Your comments are requested.
Also, what is the expected difference in efficient and effective air conditions in regards to "counter-flow" VS. "parallel flow" coil piping?