Plant Services - September 2007 - (Page 53) Services Ad/1/2 Page/Plant Serv 7/27/07 8:20 AM Page 1 EfficiEncy HVAC in a number of systems. Liquid-injection oil cooling conspires to reduce the system’s efficiency because it increases compressor power requirements and reduces capacity. Converting from liquid injection to external (thermosiphon or fluid-cooled) oil coolers can yield savings in the range of 3% to 10%. We want you! 10. Reduce parasitic loads Look for opportunities to eliminate the heat leaks into your system. Attending to failed insulation, inadequate door seals, open doors and oversized conveyor openings are examples of easy fixes that reduce the heat gains that rob your system of both capacity and efficiency. Visual inspections and more sophisticated thermal imaging can pinpoint these hot spots. Find and fix them. Converting from liquid injection to external oil coolers can yield savings in the range of 3% to 10%. Of course, you’ll need to evaluate each of these suggestions in the context of an individual system. Table 1 rates the 10 opportunities qualitatively (low-medium-high) and by their capital cost (both new and retrofit), operational risk and overall value. Get more information In 2004, the Industrial Refrigeration Consortium (IRC) published the Industrial Refrigeration Energy Efficiency Guidebook that covers these and other energy-efficiency improvement strategies for industrial refrigeration systems. In addition, the IRC has published several energy-efficiency improvement-related articles in its quarterly newsletter, Cold Front. Past issues of the Cold Front are available for download at: www.irc.wisc.edu/?/newsletter. Seeking out, evaluating and implementing energy efficiency improvements at your plant isn’t only enjoyable, it’s rewarding. Douglas T. Reindl, Ph.D., P.E., is professor and director of the Industrial Refrigeration Consortium at the University of Wisconsin-Madison. Contact him at dreindl@wisc.edu and (608) 262-6381. Help us improve productivity through reliability. ABB, a world-recognized leader in reliability services, is looking for top maintenance and reliability leaders, engineers and consultants to help support a business that has grown by 250% over the past two years. ABB focuses on optimizing reliability and moving maintenance from a cost center to a strategic asset. From hosted reliability management services to reliability consulting to long-term total maintenance management, ABB Reliability Services combines deep expertise and proven best practices that suit each customer’s needs. Learn more about how to advance your career with ABB Reliability More resources at www.PlantServices.com/thismonth 12 point checklist – “The path to superior chiller performance” Chiller selection – “Evaluating chillers” Starter controls – “Choosing a screw chiller for all occasions” Ammonia refrigerants – “The case for ammonia refrigeration” Chiller tips – “10 tips for improving chiller efficiency” Ammonia management – “Chill out and be safe” Speaking finance – “Selling your HVAC project” For more, search www.PlantServices.com using the keywords condenser, evaporator and refrigeration. September 2007 Services by emailing us at reliability.services@us.abb.com © Copyright 2007 ABB. www.PLANTSERVICES.com 53 http://www.irc.wisc.edu/?/newsletter http://www.PlantServices.com/thismonth http://www.PLANTSERVICES.com http://www.PLANTSERVICES.com
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