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扇风机测定一般要测大气状态、风机输入功率、扇风机的风量、扇风机的压力和转数等。其中大气状态、输入功率、转数比较容易测得,数据也较准确。但扇风机风量和压力因测定方法和地点不同而异,测扇风机风量一般考虑测风人员的安全和健康不用风表测风,而采用测动压求算风量,所以测风问题也是测压问题。在测定时要使测压断面尽量靠近扇风机,但要处于风流稳定区,由
Fan to determine the general measurement of the state of the atmosphere, the fan input power, fan fan air flow fan fan pressure and the number of revolutions. One of the state of the atmosphere, the input power, the number of revolutions is relatively easy to measure, the data is more accurate. However, fan air flow and pressure measurement methods and locations vary, air fan fan wind measurement generally consider the safety and health of personnel do not wind meter wind measurement, and the use of dynamic pressure calculation air volume, so the wind measurement problem is also the pressure problem. In the determination of the pressure measurement section to make as close to the fan, but to be in a stable area by the wind