Thermal transfer tube for a biogas installation fermenter and biogas installation fermenter

摘要

Heat transfer tube (1) for a biogas plant fermenter (5) for heat transfer between a medium flowing in the heat transfer tube (1) and a substrate (7) that surrounds, at least partially, the heat transfer tube (1), comprising an inner layer (2) for contact with the medium and a diffusion blocking layer (3) to prevent a permeation of substrate molecules (7) in the medium, where - the diffusion blocking layer (3) consists of ethylene vinyl alcohol, EVOH, and - an ethylene content is at least more than 32%.