Abstract: The invention relates to a system (1) for exchanging heat between two gaseous fluids (A, B) which are guided in channels. The inventive device has a housing-like module (2) in which an evaporator chamber (5) is separated from a condenser chamber (6) in such a way that it is gas tight. Several heat exchanger tubes (15) extend out of said evaporator chamber (5), via a test area (9) configured between the two chambers (5, 6), via the condenser chamber (6) and into an inspection chamber (14). The inspection chamber (14) is separated from the condenser chamber (6) in such a way that it is gas tight, and the heat-exchanger tubes are replaceable. The longitudinal sections (16) of the heat exchanger tubes (15) situated in the evaporator chamber (5) are protected against corrosion, whilst the longitudinal sections (18) situated in the condenser chamber (6) have fins (19).

Abstract: The invention relates to a system (1) for exchanging heat between two gaseous fluids (A, B) which are guided in channels. The inventive device has a housing-like module (2) in which an evaporator chamber (5) is separated from a condenser chamber (6) in such a way that it is gas tight. Several heat exchanger tubes (15) extend out of said evaporator chamber (5), via a test area (9) configured between the two chambers (5, 6), via the condenser chamber (6) and into an inspection chamber (14). The inspection chamber (14) is separated from the condenser chamber (6) in such a way that it is gas tight, and the heat-exchanger tubes are replaceable. The longitudinal sections (16) of the heat exchanger tubes (15) situated in the evaporator chamber (5) are protected against corrosion, whilst the longitudinal sections (18) situated in the condenser chamber (6) have fins (19).