Tube heat exchanger

A tube heat exchanger for exchanging heat between two fluids, including a first and second fluid, comprising of a housing having one or more tubes extending between an inlet part and an outlet part for the first fluid, and a pair of partition plates defining a central compartment between the inlet part and the outlet part, wherein the tubes extend through passages through baffle plates which extend from a side of the central compartment up to a distance spaced apart from an opposite side of the central compartment in an alternating manner to define a flow pattern imposed on the second fluid, and wherein the baffle plates are secured at a distance from one another by one or more fastening devices, said fastening devices comprising a profile that is snapped in place in one or more recesses in the respective baffle plates, wherein the profile is a V-profile and the recess is a V-shaped recess having an open end with protrusions on two opposite edges thereof, behind which protrusions the V-profile is snapped in place.