Cov furnace uas ua kom cov khoom tau pov tseg hauv lub tsev cia kev tshawb fawb yog qhov tseem ceeb rau hauv cov tsev cia kev tshawb fawb. Nws pab cov neeg tshawb fawb thiab cov neeg tshawb fawb kom ua kom cov khoom tau pov tseg hauv qhov ceev siab. Qhov no yog ua kom pom seb cov khoom sib txawv muaj dab tsi. Piv txwv li, thaum cov tshuab tau pov tseg hauv cov furnace, cov dej tshuab uas nyob cia yuav pab pom seb cov khoom lossis cov lus uas nyob hauv cov tshuab thaum kawg. ZONWON muab cov tsev cia kev tshawb fawb uas muaj qhov zoo tshaj plaws Tshuab Kuab los ntawm no kom qhov kev ua no yuav tsum muaj txiaj ntsig thiab muaj txiaj ntsig. Yog tus neeg paub seb yuav xaiv qhov tshuab twg thiab paub cov teeb meem tseem tshwm sim yuav pab cov neeg siv kom ua tau zoo dua rau lawv cov kev ua haujlwm.