Ohhavini abajikelezayo nohhavini bedekhi yizinhlobo ezimbili ezijwayelekile zamahhavini asetshenziswa kumabhikawozi nezindawo zokudlela. Nakuba zombili izinhlobo zohhavini zisetshenziselwa ukubhaka, kunomehluko oyisisekelo phakathi kwazo. Kulesi sihloko, sizoqhathanisa futhi siqhathaniseamahhavini ajikelezayonamahhavini edekhi, futhi ugqamise izinzuzo nobubi obuyinhloko balowo nalowo.

Okokuqala, ake sibheke ihhavini elijikelezayo.Amahhavini ajikelezayoamahhavini amakhulu ayi-cylindrical azungeza ngokuvundlile. Zivame ukusetshenziselwa izilungiselelo zokubhaka zezentengiselwano ukubhaka amaqoqo amakhulu esinkwa, amakhekhe namakhekhe. Ukuzungezisa kwehhavini kusiza ukuqinisekisa ukuthi ngisho nokubhaka futhi kunciphisa isidingo sokujika noma ukuhlola izinto ezibhakiwe. Ohhavini abajikelezayo baziwa nangomthamo wabo ophezulu kanye nokusebenza kahle kwamandla. Nokho,amahhavini ajikelezayozinzima kakhulu ukuzihlanza nokuzinakekela kunezinye izinhlobo zamahhavini.

Manje, ake siqhathanise lokhu nohhavini wedekhi. Ohhavini bedekhi basebenzisa uchungechunge lwamatshe noma amadekhi e-ceramic ukupheka nokubhaka ukudla. Ngokungafani nohhavini ojikelezayo, ihhavini ledekhi alijikelezi, kunalokho, ukushisa kusakazwa ngokulinganayo kuwo wonke umpheme ngamunye. Lokhu kuvumela ukuguquguquka okukhulu ekubhakeni izinhlobo ezahlukene zokudla emazingeni okushisa ahlukene. Ukwengeza, amahhavini edekhi ngokuvamile mancane ngomthamo kuneamahhavini ajikelezayo, kodwa kulula ukuwahlanza nokuyinakekela, okuwenza abe yinketho enhle kumabhikawozi amancane noma akhethekile.

Sengiphetha, ukukhetha phakathi kukahhavini ojikelezayo nohhavini wedekhi ekugcineni kuncike ezidingweni ezithile kanye nezidingo zebhikawozi noma indawo yokudlela. Uma umthamo ophezulu kanye nokusebenza kahle kwamandla kuwukucatshangelwa okubalulekile, ihhavini elijikelezayo lingase libe yisinqumo esingcono. Kodwa-ke, kumabhikawozi amancane noma akhethekile, ukuguquguquka nokulula kokuhlanza uhhavini wedekhi kungenza kube ukukhetha okusebenziseka kalula. Ekugcineni, kukumbhaki noma umpheki ukuthi anqume ukuthi yiluphi uhlobo lukahhavini olulungele izidingo nezidingo zabo ezithile.