Kuba abantu baqhele ukubiza abafune abafune abafune, abavelisi be-Steam bahlala bebizwa ngokuba bahambisa iSteam Boilers. I-Boilers Steam Boilers ibandakanya abavelisi be-steam, kodwa abavelisi be-steam ayingabo abongamileyo.
I-generator ye-Steam sisixhobo esisebenzisa ipetroli okanye eminye imithombo yamandla ukufudumeza amanzi ukuvelisa amanzi ashushu okanye i-Steam. Ngokutsho kokuhlelwa kwesikhululo sokuhlola i-boiler, umvelisi we-Steam yegumbi loxinzelelo, kunye nemveliso kunye nokusetyenziswa kufuneka kwenziwe lula.