ARRANGEMENT FOR IMPROVING THE COOLING CAPACITY AND FREEZE PROTECTION OF AIR-COOLED HEAT EXCHANGERS SUBJECTED TO THE IMPACT OF WIND

摘要

The invention relates to an arrangement for improving the cooling capacity and/or freeze protection of air-cooled heat exchangers subjected to the impact of wind, consisting either of guide elements arranged parallel with the axis of the cooling pipes (11) of the heat exchanger, or of a louvre structure (5) and guide elements (11) mounted on the louvres (9), and further consisting of support columns (2) arranged either independently or expediently such that they also strut the heat exchangers (5), where the support columns are adapted to fluid-dynamically cover the shortest outer extremities of the heat exchangers (9). The arrangement according to the invention is characterised by that the guide elements (9) are arranged towards the outer, upwind side of the heat exchanger (2) to divide the airstream flowing in between the support columns (10) to multiple but at least two portions, and the guide elements (9) have a geometric configuration adapted to reduce the parallel component of the air velocity vector of the air flowing beside the arrangement, where said parallel component is parallel with the plane of the support columns (10) arranged along the outer circumference of the heat exchangers (2), and further adapted to guide the flowing air towards a direction perpendicular to the plane of the support columns (10).