Exhaust gas heat exchanger with thermal energy recovery for an internal combustion engine exhaust system

摘要

A heat exchanger (10) with recovery of thermal energy for an exhaust system (H) of an internal combustion engine (A); The heat exchanger (10) includes a plurality of tubes (22), which define a plurality of corresponding flow channels for the exhaust gases; The heat exchanger (10) is characterized in that a wall (23) of at least one tube (22) is covered on the inside with a covering layer (24) that includes a material with exothermic hygroscopy, namely a material that is hygroscopic and performs an exothermic process of water absorption.