Ntho e futhumatsang ea tubular indasteri hangata e sebelisoa ho futhumatsa moea, likhase, kapa maro ka ho tsamaisa, ho kopana le mocheso o khanyang.Molemo oa li-heaters tsa tubular ke hore li ka etsoa ka mefuta e fapaneng ea li-cross-sections le libopeho tsa litsela ho ntlafatsa mocheso bakeng sa ts'ebeliso e itseng.