I-fan yoxinzelelo olubi, ebizwa ngokuba yi-exhaust fan okanye i-ventilation fan, sisixhobo somatshini esisusa umoya ongcolileyo, umswakama kunye nevumba kwindawo evaliweyo.Iifeni ze-exhaust zinokusetyenziswa kwiindawo ezahlukeneyo: iifama zemfuyo, ii-greenhouses, iindibano zocweyo zamashishini, njl.
Funda ngokugqithisileyo