International Appliance Manufacturing 2008 - (Page 35) Table 4: Data from Wind tunnel - Baseline 4 - 110mm fans Table 5. Refrigerator Energy Consumption Results per ASHRAE Std. 117-1992 the overall energy consumption of the refrigerator. Additional testing needs to be done in each application to quantify in-unit savings. Summary Refrigerator manufacturers are continually looking for ways to reduce energy consumption in their products. The evaporator system is an important component of this energy use. With the application of a more efficient motor/fan design, evaporator performance can be maintained while input power is reduced. PAX Scientific develops fluid moving devices with substantial improvements in efficiency whose designs are based on naturally occurring systems, and A. O. Smith motor designs have been developed which tune the operating point of the motor/fan system to maximize efficiency. Optimizing evaporator power reduction requires careful matching of the motor/fan system; ideally during operation both the fan and motor would be running at their maximum efficiency point. Preliminary test results indicate that one such evaporator system of PAX fan with A. O. Smith motor, when compared to a currently produced evap assembly, reduces evap input power by nearly 23% and overall refrigerator energy. usage by 3.9%. Convenience Matters A. O. Smith Cares Are you looking for an electric motor supplier that can reduce assembly costs for your convection ovens? A. O. Smith provides convenience and added value by furnishing air-moving sub assemblies for convection fans and cooling blowers. A. O. Smith offers customized fan assemblies with mounting plates, heating elements and wiring harnesses to fit your oven applications. Multiple bearing options are available for the best combination of cost and longevity of the motor Cross flow blowers available in 60mm and 45mm wheel diameters Motors and fans designed to meet your convection oven’s airflow and noise specifications Contact A. O. Smith to see how we can meet your unique requirements. 531 N. Fourth St. • Tipp City, OH 45371 • Tel: (937) 667-2431 • Fax: (937) 667-5030 www.aosmithmotors.com AD12064Aosm.indd 1 11/2/06 1:57:47 PM International Appliance Manufacturing 2008 35 http://www.aosmithmotors.com
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