The YORK model YVAA air-cooled, variable-speed, screw chiller, is now available in capacities of up to 350 tons and offers superior efficiency, reduced sound and greater sustainability.
Johnson Controls has increased the capacity of its YORK model YVAA air-cooled, variable-speed, screw chiller to 350 tons, in order to assist the increase of energy efficiency.
Introduced earlier this year, the YVAA chiller features the industry's highest energy efficiency ratio (EER) - at both full-load design and off-design conditions for efficient operation at all operating conditions. On replacement projects, the YVAA energy performance can exceed that of older chillers by as much as 50 percent, while performance on new projects can exceed other manufacturers' chillers by up to 25 percent. Johnson Controls’ YVAA chiller offers flexible energy consumption: it can be configured to offer design efficiency up to 11.6 EER, and an integrated part load value (IPLV) up to 19.8 EER.
Lower energy consumption means lower greenhouse gas emissions from the power plant. The YVAA chiller uses HFC-134a refrigerant, which has no phase-out date and an ozone-depletion potential of zero. Fewer joints and potential leak points keep the refrigerant inside the system, while a proprietary falling-film evaporator and advanced microchannel condenser coils reduce the refrigerant charge by as much as 15 percent. These sustainability advantages give building owners the opportunity to earn points in the Leadership in Energy and Environmental Design (LEED) green-building certification programs.
The YVAA chiller also provides superior sound performance. In addition to a variety of sound-attenuation options, the YVAA offers its SilentNight feature which works with a BAS (or programmable control) to load-limit the chiller when noise reduction is a priority. When optimised for sound performance, the YVAA chiller can reduce ambient noise by as much as 16 dBA at off-design conditions.
Johnson Controls introduced the industry's first air-cooled, variable-speed, screw chiller in 2004. The company's installed base now spans over 2 million tons in more than 100 countries, representing more than 18,000 years of field experience.
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