umvume wokuhlola amadoboni kwisezulwini
Umbhiko wokusukela kwezilondolozi zokuphucula ngokushesha (VPSA) uhlukele amandla esisodwa sokuphucula okulandelayo, ungene amandla nokugcina umthetho wesiphumo sokuqala lokusebenza ukuphucula izinyathu ezindala kusasiphephile. Isistimu semntleni uhlalekile ngokusetshenziswa imibhalo yezilondolozi ezisodwa ezikhoyo elizicabangela i-nitrogen kusasiphephile, lapho kuzobezelelwa amanye amagcinane amahhulu. Umbhiko uwenza amabhedlela emanzini: uphuculeka kunye nokubhedlela ngokungaphakathi, uvunyelwe ngokuphihlwe ngesikhatsi esidingeni ukuvumela ukuphucula izinyathu ngendawo enye. Ngokusebenza, isasiphephile sifundelekwa kunye nokufunikwa kwiinkunkuma ezihlukanisiwe ngamibhalo yezilondolozi ezisodwa, apho amagcinane yanitrogen azibhedlelwa kunye nokuthi amagcinane yakhoonyanu aziphume. Umbhiko usetyenziswa amandla amakhulu yokudibanisa umbhiko kunye nokuphucula kuhlukele amandla nokuhlola ukusetyenziswa kwezilondolozi. Izisistimu ze-VPSA zihlalekile ukuthi ziyayithatha amakhulu akhoonyanu ephakeme phakathi kwe-90% kunye we-95%, uzokusetyenziswa kwindawo ezininzi zemfundo. Ukuphucula kwesombili lokusebenza kuhlukele amandla ukuthi amaqembu angavame kwezindawo ezincane ezinikezela kwezindawo ezikhangana kunye nokuthi amaqembu angavame kwezindawo ezikhulu ezisebenzela umculo, ngenxa kokuba amakhulu akhoonyanu angavame phakathi kwezinhlanu kunye nezikhulu ezimbili ezintsha kwiimbali yesikhashana. Izisistimu ze-VPSA ezindaweni zihlalekile ngokusetshenziswa ukuphucula nokuhlola amandla, uzokuhlola ukuthi amandla akhona kunye nokuthi abantu abasebenzela abaningi aqale ukubhedlela. Umbhiko wahamba ukuthi wahlukele amandla kwindawo ezininzi njengesiqhama, ukuphucula amaglassi, amafeshini lemedikhamenenti, kunye nokuphucula amanye amagcinane, apho kuhlanganiswa amandla yokuthi amakhulu akhoonyanu ahlangene nendawo.