Umswakama ubhekisela enanini lomhwamuko wamanzi emoyeni. Uma lina, umoya umanzi kakhulu ngoba uqukethe umhwamuko wamanzi omningi. Ngokuphambene nalokho, uma umoya uqukethe umhwamuko wamanzi omncane kakhulu noma ungenawo nhlobo, umoya womile kakhulu. Inani lomhwamuko wamanzi emoyeni livezwa njengomswakama olinganiselwe.
Umswakama ohlobene yisilinganiso somfutho ongaphelele womusi nomfutho womhwamuko ogcwele wamanzi ekushiseni okuthile (ngomusi lapha sisho umhwamuko wamanzi). Umswakama ohlobene uvezwa njengephesenti, ohlelwe ngokwezibalo kanje:
Kukhona igama elisha, okungukuthi ukucindezela okungaphelele. Ukucindezela okungaphelele ukucindezela okukhishwa yigesi ngayinye emoyeni. Empeleni umoya uqukethe izinhlobo ezahlukene zamagesi... kukhona i-nitrogen (78%), i-oxygen (21%), i-argon (0,90%), i-carbon dioxide, umhwamuko wamanzi, njll. Isamba sezingcindezi ezingaphelele zegesi ngayinye emoyeni sibizwa ngokuthi ukucindezela okuphelele (ingcindezi ephelele = ukucindezela komoya = ukucindezela komoya). Uma kungekho okuqukethwe komhwamuko wamanzi emoyeni, khona-ke ukucindezela okungaphelele komhwamuko wamanzi = 0. Ngokuphambene nalokho, ukucindezela okungaphelele komhwamuko wamanzi kuphezulu uma ukucindezela okungaphelele komhwamuko wamanzi = ukucindezela komhwamuko wamanzi okugcwele. Ukucindezela komhwamuko wamanzi okugcwele kuncike ekushiseni (bheka ithebula elingenhla).
Uma ingcindezi engaphelele yomhwamuko wamanzi = ingcindezi yomhwamuko wokugcwala (umswakama ohlobene = 100%), khona-ke umoya ugcwala umhwamuko wamanzi… Lapho umoya ugcwala umhwamuko wamanzi, okuqukethwe komhwamuko wamanzi emoyeni cishe kufinyelela inani lawo eliphezulu… Uma ingcindezi engaphelele yomhwamuko wamanzi > ingcindezi yomhwamuko ogcwele (umswakama ohlobene > 100%), khona-ke umoya ugcwala kakhulu… Lapho umoya ugcwala kakhulu, umoya awusakwazi ukubamba okuqukethwe komhwamuko wamanzi… Ngenxa yokuthi umoya awusakwazi ukubamba okuqukethwe komhwamuko wamanzi, umhwamuko wamanzi owengeziwe uzogcwala emanzini (funda: amazolo)... Izinga lokushisa lapho umhwamuko wamanzi ugcwala khona ube amazolo libizwa ngokuthi iphuzu lamazolo.
