Ukwamukela ithiyori yokugeleza kwekhawunta, umoya obandayo ungena ngaphakathi kokupholile ukusuka phansi kuye phezulu, ama-pellets ashisayo
iya epholile ukusuka phezulu kuya phansi, njengoba isikhathi siqhubeka, ama-pellets azoshaya phansi, umoya obandayo uzophola.
ngezansi kancane kancane, ngale ndlela kuzonciphisa i-pellet ephukile, uma umoya obandayo ubuye uphole kusuka phezulu,
okufana nama-pellets, khona-ke ama-pellets ashisayo azohlangana nomoya obandayo ngokuzumayo, khona-ke ama-pellets azophuka kalula,
ikakhulukazi ama-pellets angaphezulu. Ngale ndlela ingaphola ngokugcwele nangokulinganayo, izinga eliphukile le-pellet lincane kuno-0.2%.