Malo ndi malo omwe mpweya wotuluka mkati mwa malo osungiramo zinthu ozizira umagwirira ntchito zimakhudza momwe umagwirira ntchito. Kawirikawiri, fani yomwe ili pafupi ndi chitseko chosungiramo zinthu ozizira imakhala ndi kuzizira kwambiri. Chifukwa chakuti malo ake ali pakhomo, mpweya wotentha umatuluka kunja kwa chitseko chikatsegulidwa, ndipo chikakumana ndi fani, kuzizira kwambiri ndi kuzizira, kapena ngakhale ayezi, zimachitika. Ngakhale faniyo imatha kutentha ndi kusungunuka yokha nthawi ndi nthawi, ngati chitseko chatsegulidwa pafupipafupi, nthawi yotsegulira imakhala yayitali kwambiri, ndipo nthawi ndi kuchuluka kwa mpweya wotentha wolowa ndi wautali, mphamvu ya faniyo si yabwino. Chifukwa nthawi yosungunula ya faniyo singakhale yayitali kwambiri, apo ayi nthawi yosungunula idzafupikitsidwa, mphamvu ya kuzizira sidzakhala yabwino, ndipo kutentha kosungira sikungatsimikizidwe. M'malo ena osungiramo zinthu ozizira, chifukwa cha zitseko zambiri, kuchuluka kwa kutsegula kumakhala kokwera kwambiri, nthawi ndi yayitali kwambiri, palibe njira zotetezera kutentha pakhomo, ndipo palibe khoma logawa mkati mwa chitseko, kotero kuti mpweya wozizira ndi wotentha umayenda pakati pa mkati ndi kunja umasinthidwa mwachindunji, ndipo choziziritsira mpweya pafupi ndi chitseko chidzakumana ndi mavuto aakulu. Vuto la chisanu.