Heat exchanger

A method for assembling a heat exchanger, comprising:

• receiving at least a portion of a core inside an enclosure defined by side walls of either one of complimentary first and second portions of a housing, the first portion being a top portion and having a first face for facing the core and the second portion being a bottom portion and having a second face for facing the core;
• supporting the first portion or the second portion of the housing in an inverted configuration thereof along with the core received therein inside a holder;
• aligning the other portion of the housing with the portion of the housing supported inside the holder and joining the complimentary and aligned portions of the housing by vibration welding, ultrasonic soldering, ultrasonic welding or using threaded fasteners in an assembled configuration of the housing and the core, wherein in the assembled configuration, extended ribs extend from at least one of the first face and the second face to at least one of a top and a bottom of the core to form a sealing between the core and the housing;
• and
• deforming at least one of the first fins received in a first coolant flow passage and second fins received in a second coolant flow passage of the core at extreme ends thereof during or before assembly to disrupt fluid flow through at least one of the respective first coolant flow passage and second fluid flow passages.

A heat exchanger comprising a core including:

• a plurality of sets of tubular elements in fluid communication with a first inlet and outlet pair to define first fluid flow there-through;
• a plurality of fluid flow passages with fins received therein, in fluid communication with a second inlet and outlet pair to define second fluid flow there-through, the fluid flow passages being adapted to sandwich at least one set of tubular elements;
• a housing having a first portion and a second portion assembled together and forming an enclosure receiving the core therein, thereby defining an assembled configuration of the core and the housing, the first portion having a first face facing the core and the second portion having a second face facing the core,
• the housing having a plurality of extended ribs extending from at least one of the first face and the second face of the housing respectively towards the core,
• with at least one first fin and at least one second fin of the fins being disposed in respective first and second fluid flow passages of the plurality of fluid flow passages at extreme ends of the core;
• and
• wherein the extended ribs are in direct contact with the at least one first fin and the at least one second fin such that the at least one first fin and the at least one second fin are in a deformed shape to disrupt fluid flow through the respective first and second flow passages.