Energy-Efficient Centrifugal Fan Series | XFL-ES Series Centrifugal Fans

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 XFL-ES Series Applications 

      The XFL-ES series fans fall within the low-flow, medium-to-high-pressure category, achieving a maximum fan efficiency of 82.3%. They are suitable for primary and secondary fans in circulating fluidized beds (35–410 tons/hour), high-pressure induced draft fans, high-pressure forced ventilation systems, gas blowers, and main exhaust fans for sintering processes.  

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 XFL-ES Series Selection Advantages  

      Example: Design parameters for a circulating fluidized bed fan: Pa=101325Pa; p1=1.2kg/m³; Flow=14867m³/h; Total Pressure=17931Pa; 

    Option 1: Without the XFL-ES series, only the XFQ-YL N010.6D (n=2980 r/min) could meet these parameters. 

    Option 2: With the XFL-ES series available, the XFL-ES N010D (n=2980 r/min) can be selected within a specific dimensionless curve segment (previously blank).

As shown in Table 1, to meet design parameters, selecting the XFQ-YL N010.6D fan with 65% efficiency versus the XFL-ES N010D fan with 82.3% efficiency yields a 26.6% increase in fan efficiency and a 21% reduction in impeller power consumption, resulting in significant energy savings. Furthermore, the smaller fan size reduces material usage and lowers costs. Additionally, the inlet-to-outlet area ratio of the XFL-ES fan is 0.64, while that of the XFQ-YL fan is 0.47. As previously mentioned, to achieve the same static pressure difference, the XFL-ES can be sized smaller.     Minimal Performance Difference Between F-Type and D-Type     Addressing the issue where F-type design significantly reduces pressure and efficiency compared to D-type at the same flow point for low-flow fans, we designed an F-type structure for the XFL-ES N08 model, featuring an inlet plenum and radial inlet. Table 2 presents the dimensionless performance comparison between F-type and D-type across seven operating points.

Table 2 shows that under seven operating conditions, the F-type design exhibits a maximum pressure reduction of 2.3% and a maximum fan efficiency reduction of 4.9% compared to the D-type. By modifying the low-flow fan, the F-type (radial inlet) addresses the significant pressure and efficiency losses caused by uneven flow patterns at the impeller inlet and axial obstruction of the inlet airflow. This XFL-ES schematic includes the F-type inlet plenum and air inlet.

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XFL-ES Fan Specifications