Two chiller suppliers have come out with new models designed to handle alternative refrigerants to replace ozone-damaging R-22 (“Freon”), which has been the industry standard. “Soon, all chillers will need to use a non-ozone-depleting refrigerant,” explains Wes Sipe, general manager of the Heat Transfer Group for Conair in Cranberry Township, Pa. “The U.S. EPA has mandated the phase-out of conventional R22 refrigerants by 2010. At that point, you won’t be able to buy chillers using the old technology, and maintaining and operating existing R22based chillers will become more costly. Conair is making the transition now.”
The first models in Conair’s new line of EarthSmart portable chillers are said to be the first on the market to use environmentally friendly R410A refrigerant. Conair recently launched air-cooled and water-cooled chillers in six sizes from 1.5 to 15 tons, though larger and smaller units will be added later.
Conair also redesigned the chillers for greater ease of use and maintenance. They all have the same controller, which provides features typically available only on high-end units but now standard on these models. Such features include two four-digit LED displays for setpoint and actual (to-process or from-process) readings; diagnostics with history log of 40 past alarms; selectable temperature-control point (to-process, from-process, or average of the two); hot-gas bypass; and auto-tuning to optimize control settings for the actual cooling load.
Meanwhile, Thermal Care, Inc., Niles, Ill., has a new line of central chillers designed for R-134A, another eco-friendly refrigerant permitted by the EPA as an alternative to R-22. Thermal Care’s MX Series R-134A rotary-screw central chillers come in capacities of 50 to 125 tons and in water-cooled and remote-condenser models. Each has a single circuit, but their modular design allows up to four circuits to be linked together with a common control system. Thermal Care will also release soon a line of portable chillers with an eco-friendly refrigerant. (724) 584-5500 • www.conairgroup.com (847) 966-2260 • www.thermalcare.com
Thermal Care, Inc.
7720 N. Lehigh Ave. Niles, IL 60714-3491
Phone (847) 966-2260 Fax (847) 966-9358
200 West Kensinger Drive
Phone (724) 584-5500 Fax (724) 584-5299