戴森吸力AW的计算方法

Air Watts

As we have discussed, typical vacuum power specifications such as watts and amps measure the vacuum cleaner's input power. Central vacuum makers, as well as some other vacuum cleaner manufacturers, have been using the air watts specification to attempt to rate the vacuum cleaner's output rather than input power. Air watts are calculated using the formula, (Air Flow (in CFM) x Vacuum (in inches of water lift))/8.5 = Air Watts.

1、（空气流量（以CFM计）×真空度（以英寸水柱升程计））/ 8.5 =空气瓦特。

公式：

CMF换算方法：1CFM=28.316846592 L/MIN=0.028 m3/min

单位换算：1毫米(mm)水柱=0.0393701英寸(in)水柱

真空度（以英寸水柱升程计）单位换算方法：

1kPa=101.972毫米水柱

101.972毫米水柱X0.0393701英寸得到下面的结果：

101.972毫米(mm)=4.0146457英寸(in)

戴森吸力AW的计算方法

吸入功率116.52W

其中空气流量10.56Q（L/S)

真空度11.03kPa

计算如下：

10.56Q（L/S）（每秒10.56升）=10.56X60秒=633.6/0.028（系数）=22.63CFM

根据上面的公式得到：

11.03kPa=1124.75毫米水柱

1124.75毫米水柱=44.2814961英寸水柱

代入公式：22.63X44.28/8.5=117.89AW