Heat exchanger and method of manufacure thereof

摘要

A heat exchanger comprising a cooling core consisting of a plurality of heat exchanging tubes arranged in parallel rows extending between a pair of manifolds provided with slots, where the ends of said heat exchanging tubes are inserted into said slots to be in fluid communication with each manifold, each row including at least two coplanar tubes arranged side by side for providing a cross flow arrangement, wherein an end region of a first tube in each row is offset orthogonally to the normal direction of flow of fluids through the cooling core in a first direction and an end region of a second tube in the same row is offset orthogonally to the normal direction of flow of fluids through the cooling core in a second direction, opposite to said first direction, such that the respective slots for receiving the ends of said first and second tubes are axially offset with respect to one another whereby the first and second tubes in each row can be located in abutting contact with one another.