160-AA08NPS1;
160-AA08NPS1现货;
160-AA08NPS1供应。
风机、水泵设备通常是以流量为控制对象的。传统的流量控制方法是阀门/挡板控制法,即通过关小和开大阀门/挡板的开度来调节流量。阀门控制法的实质是通过改变管网阻力大小来改变流量。因此,这种控制方式当所需流量减少时,压力反而会增加,故轴功率的降低有限,此时,过剩的风机、水泵功率将导致压力增加而白白浪费掉了。
风机、水泵节电器可在保持阀门/挡板开度不变的前提下,通过改变风机、水泵的转速来调节流量,其实质是通过减少流体动力来节电。
由流体力学理论可知,流量与转速的一次方成正比,压力与转速的平方成正比,轴功率与转速的三次方成正比。
因此,采用风机、水泵节电器这种控制方式时,当所需流量减少时,轴功率将显著降低。例如,当流量下降到80%,转速也下降到80%时,轴功率将下降为额定功率的51%。这种控制方式可从根本上消除风机、水泵设备由于选型或负荷变化普遍存在的“大马拉小车”的动力浪费现象,消除了挡板节流阻力,使风机、水泵始终运行在工作状态。
风机、水泵节电器的平均节电率为30%-60%,具有投资回收期短,受益期长等特点,是现代风机、水泵控制之理想设备。
19、太上有立德,其次有立功,其次有立言,虽久不废,此谓不朽。——《左传》
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