Plant Services - August 2007 - (Page 36) Shaft Alignment MANAGEMENT Engineering A variable-speed drive saves energy that the La Union sugar mill in Guatemala is able to sell for additional revenue of $158,480 per harvest season. Source: Rockwell Rotalign® ULTRA reduce total system mileage, emissions and fuel consumption. Conserve energy OPTALIGN® smart h Watc O VIDEne Onli ALIGNEO® The right tool for every user, job and budget 305-591-8935 • www.ludeca.com See us at Booth #2712 National Manufacturing Week 36 Energy conservation has long been a selling point in operations technology, primarily for its often sizable cost benefits. Now, easing our demand on the power grid and limiting our consumption of fossil fuels is becoming a corporate responsibility – not only for the good of the community but also our energy security. Improved process controls, optimized energy generation and distribution, and improved yields from manufacturing processes helped DuPont to use 7% less energy than it did in 1990, despite producing 30% more goods, saving the company $2 billion. Supplementing nonrenewable energy sources with renewable strategies such as solar or wind power and daylighting is another approach to going green. Pfister Energy predicts that, depending on the size of the solar photovoltaic system and your demand for electricity, you can cut your energy cost from 15% to 80%. Mercotac is the proud owner of a 45-kW solar photovoltaic electrical generation system at its Carlsbad, Calif. facility. Real-time output information is on display at www.mercotac. com/html/about.html. La Union sugar mill in Guatemala uses waste energy to produce electricity, and excess power is sold to the local .PLANTSERVICES. utility. It replaced low-efficiency steam turbine drives with motors and variable-frequency drives from Rockwell Automation and local distributor Intek. e drives and motors use 66% less steam to generate the equivalent power, resulting in a 30% to 35% improvement in energy efficiency. e mill achieved payback in the first six-month season of operation, and now is benefiting from $158,480 in additional annual revenue as well as reduced downtime. “Variable-speed drives can save energy and improve process control,” says George Seggewiss, a senior projects solutions engineer at Rockwell. “In most cases, the focus is on energy savings and the payback period is generally one to three years. With good maintenance, the equipment can last 10 years to 15 years. Because the technology can be added on the front end of existing motors, companies can save the cost of a new machine while getting the benefits of variable speed.” Micro 100 Tool Corp. harnessed GE lighting to save energy. It selected 210 long-life 23-watt Genura reflector GREEN ESSENTIALS • Improve air quality • Conserve energy • Preserve water • Minimize land lls • Increase green space • Remove toxins • Preclude NIMBY A http://www.ludeca.com http://www.mercotac.com/html/about.html http://www.mercotac.com/html/about.html http://www.ludeca.com http://www.plantservices.com
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