Zida ndi mtundu wa countercurrent ng'oma maginito olekanitsa mwapadera kuti achire maginito sing'anga. Ndi makina ofananira ndi makompyuta, pangani mphamvu yamphamvu ya maginito ndi maginito okwera kwambiri, maginito okulunga maginito ndi 138 ° Mapangidwe oyenera a zida, omwe amatha kutulutsa mpweya wabwino wa mchere, kupititsa patsogolo kuchira kwa maginito.
