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   Chilled Water Systems: SPLV Saves Money & Energy What is the best choice of equipment for a 1500-ton chilled water job? It depends - on the region of the country, the application, existing equipment, cooling tower selection, pump selection and chiller sequencing. Unfortunately for the building owner, the industry standard for rating chillers is either using the Integrated Part Load Value or the chiller's full load kilowatt per ton rating, neither of which is representative of a particular job installation. This means that the owner is forced to choose components without knowing the resulting system efficiency, potentially costing the owner thousands of dollars per year in additional energy charges. By selecting a chiller only from full load KW/Ton, the building owner has no idea what they will be paying on a yearly basis to run the system under actual conditions. In a recent case study, two chillers from two different competitors both met the engineer's required full load performance as called for in the specifications. But after examining the System Part Load Value (SPLV), they discovered that selecting the wrong chillers would result in a $6,500/year higher energy cost - which translates to $163,000 over the life of the chillers! Fortunately for the building owner, Carrier's Chiller System Optimizer Program provides a solution to the problem. The software program allows the Carrier Sales Engineer to help evaluate both the efficiency of the particular installation, as well as the economic differences between selecting different systems - including existing chillers in the plant. The program takes into account cooling tower data, chiller selection (new or existing from multiple manufacturers), local weather data, pump selection, energy costs, and building load profiles. To see a demonstration of what the Carrier Chiller System Optimizer Program can do for you, contact Auer Steel's Commercial Sales Department at (414) 438.3248. Journal Chooses Earth-Friendly Cooling for Long-Term Performance & Quality When the folks at Journal Communications (parent company of the Milwaukee Journal-Sentinel) tackle a project of unprecedented size and scope - such as their new $106.6 million production facility on Milwaukee's south side - they're serious about doing it right the first time. Consider the exhaustive, 2-1/2 year study undertaken, in which they rated four different printing press manufacturers on over 300 factors. This intense focus on quality and long-term performance was a perfect match for Carrier's Evergreen chiller line. The state-of-the-art facility was reported to be the largest capital investment in the company's history. And while high performance chillers were a must, "Long term operating cost control was also a key factor," says Auer Steel professional engineer John Enright. "Thus, the job will include three 600-ton Carrier Evergreen chillers, which use R-134a refrigerant - a refrigerant that does not contain chlorine, does not harm the earth's ozone layer, and has absolutely no phase-out date." Enright points out that as chlorine-based refrigerants are phased out by government regulation and international treaties, supply will dwindle and maintenance costs will go up. "R-134a was their best bet for keeping future costs in check," says Enright. he 435,000 square foot facility is scheduled for completion in 2002. The three chillers were delivered in May 2001. 
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