Energy efficient variable volume ventilation for an industrial plating process. Part 2

This paper is the part 2 of a two-part series. It deals with the electrical and thermal energy savings, in Smith & Wesson's 153-year-old plant located in Massachussets.Thanks to the design and the installation of the new electrical system, the electrical-power demand has been reduced by 72.5 %, the annual electrical-energy consumption by 54.6 % and the annual thermal-energy consumption by 34.6 %. For that the nine electrical motors serving the make-up air units and exhaust fans have been equipped with VFD (variable-frequency-drive).