Shell ne tube ɔhyew exchanger no titiriw ne shell, tube bundle, tube sheet ne ti. Wɔn mu no, nsu biako (a mpɛn pii no ɛyɛ nsu a ɛyɛ nwini) sen wɔ tube no fã, na nsu foforo (mpɛn pii no nsu a ɛyɛ hyew) sen wɔ abon no fã. Esiane sɛ ɔhyew nsonsonoe wɔ abien no ntam nti, ɔhyew fi-temperature nsu no mu kɔ fam-temperature nsu no mu, na ɛnam so ma ɔhyew nsakrae no ba mu.
Ne titiriw no, sɛ nsu a ɛyɛ hyew no hyɛn abon no fã a, ne hyew no kɔ nsu a ɛyɛ nwini a ɛwɔ tube no fã no mu fa tube no fasu no mu. Ɛnyɛ sɛ ɔkwan a wɔfa so de ɔhyew kɔ no yɛ adwuma yiye nko, na mmom ebetumi adi nsu no hyew so yiye nso. Bio nso, wobetumi nso ayɛ shell ne tube ɔhyew exchanger no sɛ biako-pass anaa multi-pass nhyehyɛe sɛnea ahiade ankasa a ɛbɛma wɔadi ɔhyew nsakrae ahwehwɛde ahorow ho dwuma.