The author focuses on how humidity control affects the IAQ of the modern workplace environment. Studies cited show the effect that controlled relative humidity levels has on absenteeism and productivity. Overall benefits of hvac renovation to improve IAQ are reviewed, as well as current humidity control technologies and their applications.
The IU Chemistry Building was not using chilled water efficiently. The problem was corrected by installing variable-speed drives on the chilled-water pumps and resetting the control valve differential for better control, energy savings, and improved chilled-water temperature changes.