Fan impeller outlet diameter d2 = 950mm, export of wide-diameter ratio of 0.030, the conditions in the design polytropic efficiency ηpol = 76.0%, to reach gb28381-2012 multi-stage low-speed blower energy efficiency rating value of 74%.
Fan impeller outlet diameter D2=950mm, outlet width ratio is 0.030, on the design condition variable efficiency η pol=76.0%, up to GB28381-2012 multistage low-speed fan energy-saving evaluation value 74%.
Fan impeller outlet diameter D2=950mm, export-width aspect ratio 0.030, polytropic efficiency ¦ç pol=76.0% under the design conditions, energy saving assessing value reached GB28381-2012 multilevel low speed blower 74%.