Abstract: An air-cooled heat exchange system with channels containing a coolant, which system includes a row of rectangular heat exchange elements, which are connected edge to edge angled to and fro and contain the channels with the coolant. The row of heat exchange elements is arranged in a low, wide and long housing with open ends, which is arranged to be flown through by a cooling air flow. The row of heat exchange elements extends, partly crosswise the flow direction of the cooling air flow between two low side walls attached to the side walls and to the roof and bottom, partly in the longitudinal direction of the housing mainly a distance between the inlet and outlet openings, which distance is essentially longer than the height of the housing and the open ends.