Igobolondo kanye ne-tube heat exchanger yakhiwe ikakhulukazi igobolondo, inqwaba yeshubhu, ishidi leshubhu nekhanda. Phakathi kwazo, uketshezi olulodwa (ngokuvamile uketshezi olubandayo) lugeleza ohlangothini lweshubhu, kanti olunye uketshezi (ngokuvamile uketshezi olushisayo) lugeleza ohlangothini lwegobolondo. Ngenxa yomehluko wezinga lokushisa phakathi kwakho kokubili, ukushisa kudluliselwa kusuka-kuketshezi lwezinga lokushisa eliphezulu kuya-kuketshezi lwezinga lokushisa eliphansi, ngaleyo ndlela kubonakale ukushintshana kokushisa.
Ngokuqondile, lapho uketshezi olushisayo lungena ohlangothini lwegobolondo, ukushisa kwalo kudluliselwa oketshezini olubandayo ohlangothini lweshubhu ngodonga lweshubhu. Le ndlela yokudlulisa ukushisa ayisebenzi nje kuphela, kodwa futhi ingakwazi ukulawula ngokuphumelelayo izinga lokushisa loketshezi. Ngaphezu kwalokho, igobolondo nesishintshi sokushisa seshubhu kungaphinda kuklanywe njengedlula-njengesakhiwo sephasi eyodwa noma{3}eziningi{3}ngokuhambisana nezidingo zangempela ukuze kuhlangatshezwane nezidingo zokushintsha ukushisa.