Ralph Kittler, P.E., is a co-founder and vice president of sales/marketing at Seresco USA (www.serescodehumidifiers.com), a Decatur, Ga.-based manufacturer of natatorium dehumidifiers. Kittler has 23 years experience in the HVAC industry. He is an ASHRAE Distinguished Lecturer and ASHRAE Technical Committee 9.10’s revisor responsible for Chapter 25 “Mechanical Dehumidifiers and Related Equipment” in ASHRAE’s 2012 Systems and Equipment Handbook as well as Technical Committee 9.8’s revisor responsible for Chapter 5 which covers “Natatorium Design (Large Building Air Conditioning Applications)” in ASHRAE’s Applications Design Handbooks since 1999.
Reducing refrigerant in direct expansion (DX) HVAC system designs is a trend both contractors and consulting engineers are using to distance themselves from the competition. While refrigerant reduction has been fairly common in conventional air conditioning, it’s only now emerging in the category of indoor pool (natatorium) dehumidification.