Carrier Corporate News

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Carrier Corporation
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CARRIER EXPANDS CHLORINE-FREE ECOLOGICTM CHILLER LINE

SYRACUSE, N.Y., Mar 30 -- Carrier's non-ozone-depleting EcologicTM air-cooled chiller line now includes models up to 250 tons. Ecologic chillers offer higher efficiencies, lower sound levels and smaller footprints than previous air-cooled models. The line features Carrier Carlyle geared twin screw compressors and non-ozone depleting, chlorine-free HFC-134a refrigerant.

The expanded Ecologic line offers economic and practical performance without compromising environmental responsibility. The line's higher efficiencies mean not only lower operating costs, but also less production of greenhouse gases often associated with global warming.

"The Ecologic chillers were designed from the ground up to use a non-ozone depleting, chlorine-free refrigerant that has an ASHRAE safety classification rating of A-1," said Jim Cullen, product manager for air-cooled chillers in Carrier's Commercial Systems Division.

The key to the Ecologic chiller's efficiency is a geared twin screw compressor coupled to the flooded cooler. This combination minimizes pressure drops, enabling the chiller to operate efficiently with HFC-134a. Geared twin screw compressors from Carrier's Carlyle Compressor Division are more efficient than traditional screw compressors. Third-generation advances in loading/unloading, combined with fully automatic controls, enhance performance and reliability. Controls are based on Carrier's FlotronicTM system and provide accurate leaving temperature control with return temperature compensation, even under variable flow conditions.

Ecologic chillers are cable-ready for connection to the Carrier Comfort NetworkTM, an electronic communication system for integrated control and management of HVAC equipment in commercial buildings. Ecologic controls also feature remote operation and the ability to be integrated into existing building management systems through a standard 4-20mA signal.

"Resource efficiency is another area that is not only environmentally responsible, but offers practical benefits as well," said Cullen. "Our newest 250-ton model is only 25 feet in length. That's about 30 percent smaller than similar units using HCFC-22. In fact, many of our Ecologic chillers are at or very close to 10 tons per foot of length." For example, the small footprint of the Ecologic 30GX model will simplify installation and lower installed cost by reducing the amount of concrete, structural steel or architectural screening used in the installation.

Another feature of the Ecologic chiller is its quiet operation. Unlike other screw compressors, the Carlyle geared twin screw compressors used on 30GX Ecologic chillers have been specifically designed for quiet operation by eliminating the annoying frequencies that direct-drive compressors often emit. And since condenser fan noise can be just as annoying, all 30GX chillers come standard with the AeroAcousticTM fan. These compact fans move more air with greater efficiency and less noise.

Carrier Corporation is the world's largest manufacturer of heating and air conditioning systems and equipment. It is a subsidiary of United Technologies Corporation, provider of a broad range of high-technology products and support services to the aerospace, building systems and automotive industries.

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