According to the invention, {TAIL ~ each module} 1 of the convector has—upstream of the tube bundles 7 in the direction of the air flow according to F1—a chamber 13, called “adiabatic chamber”, delimited laterally by the panels 5 and, in {HEAD ~ the direction} of flow F1, by a fill pack 15 at the inlet and by a fill pack 17 at the outlet  
According to the invention , { TAIL ~ each module } 1 of the convector has — upstream of the tube bundles 7 in the direction of the air flow according to F1 — a chamber 13 , called “ adiabatic chamber ” , delimited laterally by the panels 5 and , in { HEAD ~ the direction } of flow F1 , by a fill pack 15 at the inlet and by a fill pack 17 at the outlet
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