Mlozera wa magwiridwe antchito a fyuluta ya mpweya makamaka umatanthawuza fumbi lochotsa bwino, kukana, ndi mphamvu yogwira fumbi.Kuchotsa fumbi kungathe kuwerengedwa motsatira njira iyi:
Kuchotsa fumbi kuchita bwino=(G2/G1)×100%
G1: Wapakati fumbi mu fyuluta (g/h)
G2: Kuchuluka kwafumbi komwe kumatha kusefedwa (g/h)
The fumbi kuchotsa dzuwa komanso zimadalira tinthu kukula.Kukaniza kumatanthauza kukakamiza kosiyana.Pamaziko owonetsetsa kuti zosefera zili bwino, kukakamiza kocheperako kudzakhala kwabwinoko.Kukaniza kowonjezereka pamapeto pake kumapangitsa kuti pakhale mphamvu zambiri.Kukana kwakukulu kumapangitsa kugwedezeka kwa kompresa ya mpweya.Chifukwa chake, muyenera kusintha gawo la fyuluta pamene kukana kwa fyuluta kukufika kapena kuyandikira kuthamanga kwa vacuum yololedwa.Kuphatikiza apo, kuchuluka kwa fumbi kumatanthawuza fumbi lomwe lasonkhanitsidwa pagawo lililonse.Ndipo gawo lake ndi g/m2.