Humidity Control Design Tips

  • R. Mark Nunnelly, PE, CxA, LEED AP – Nunnelly & Associates, Inc.

What is “absolute” humidity control? How much moisture should – or should not – be present in the air of commercial building spaces? Does temperature have anything to do with it? This presentation covers the basic principles of designing, reviewing designs, properly installing, testing, operating and maintaining HVAC systems in buildings for the purposes of achieving – and maintaining – absolute humidity control within the space. The presenter shares the basics of psychrometric analysis and explains how to properly apply ASHRAE’s published climate data. He also describes various dehumidification technologies and procedures to achieve the intended operating conditions.