Shreve Memorial Library
Problem: On July 22, 2014 Storer Services was contacted by the Shreve Memorial Library to evaluate the Heating, Ventilation, and Air Conditioning (HVAC) system of Shreve Memorial Library. Our findings showed, the existing HVAC system was providing a discharge air of 65°F at 70% relative humidity. This created an environment conducive to microbiological growth in the duct system, in the space, and on the surface of the books. Our task was to provide a solution to maintain a relative humidity 50%.
Solution: In order to remove the moisture from the space Storer Services installed Direct Digital controls to the Chilled water plant and air handler units. This was done so we could optimize the dehumidification sequence by sub cooling the air stream. Terminal reheat coils were then installed to reheat the air to a desirable sensible temperature and relative humidity. By sub-cooling, then reheating the air, we were able to remove moisture and maintain space conditions at the recommended 72 degrees (+/- 2 degrees) F and 50% (+/- 5%) RH.
Legacy: Since the systems installation, we have maintained an average humidity level of 50%. The RH and temperature are closely monitored by our Connected Building Services Department.