Heat and moisture exchangers

摘要

An HME has an exchange element 10 comprising a bundle of hollow fibres 11 parallel to the direction of gas flow through the HME. The fibres 11 are of a polymeric material, such as a sulphone, and are treated with a hygroscopic material. The bundle of fibres is held together by an outer sleeve 12 and a porous cap 13 at each end.