風(feng)機(ji)的性(xing)能是高效率范圍內的性(xing)能，按(an)流量分為五(wu)個(ge)特點，選用(yong)(yong)時按(an)性(xing)能表為準，風(feng)機(ji)合格(ge)品性(xing)能在額定(ding)流量下(xia)全壓值不超過(guo)±5%。性(xing)能選用(yong)(yong)表是標(biao)準狀(zhuang)態(tai)(tai)下(xia)的性(xing)能，標(biao)準狀(zhuang)態(tai)(tai)大氣(qi)(qi)壓101325Pa，t=20相對溫度Ψ=50%空氣(qi)(qi)狀(zhuang)態(tai)(tai)，風(feng)機(ji)安裝方式(shi)(shi)可分為立式(shi)(shi)或臥(wo)式(shi)(shi)。