Abstract: The invention relates to equipment for renewing the air of a plurality of rooms (1), comprising: a common single-flow airflow generator (2) arranged inside the rooms for extracting air from the rooms; a dual flow heat exchanger (3) arranged inside each room (1), comprising: an inlet opening (4) for the airflow (10) entering the room; an outlet opening (5) for the airflow (10) entering the room; an inlet opening (6) for the airflow (11) exiting the room; an outlet opening (7) for the airflow (11) exiting the room; a flow inlet inner duct (8) connecting the inlet (4) and outlet (5) openings for the airflow entering the room; a flow outlet inner duct (9) connecting the inlet (6) and outlet (7) openings for the airflow exiting the room; an exchange wall (12) having a first surface (13) defining a portion of said flow inlet inner duct (8) and a second surface (14) opposite the first defining a portion of the flow outlet inner duct (9); a plurality of individual ducts (15) for extracting air from the rooms, an indi

Abstract: The invention relates to a device (1) enabling the exchange of heat between a first fluid (2) and a second fluid (3) flowing counter current through the device, comprising: an outer casing (4) sealed against the two fluids, having a long shape that extends between first (7) and second (9) ends; a wall (5) enabling heat exchange between the fluids, housed inside the outer casing; a first inlet (6) for the first fluid (2), formed at the first end (7) of the outer casing; a second inlet (8) for the second fluid (3), formed at the second end (9) of the outer casing (4) opposite the first end (7), the aforementioned exchange wall (5) extending between the first (6) and second (8) fluid inlets; a first outlet (10) for extracting the first fluid (2) from the outer casing (4), formed in the area at the first end (7); a second outlet (11) for extracting the second fluid (3) from the outer casing (4), formed in the area at the second end (9); a first pipe (12) enabling the flow of the first fluid (2) inside the outer c

Abstract: The present invention relates to methods for producing a heat exchanger comprising banks 2, 3, 4 each defining a fluid flow, each bank comprising two solid plates 11, 12 and spacer pieces to hold the two plates in position.