A CROSS FLOW HEAT EXCHANGER ELEMENT AND A HEAT EXCHANGER COMPRISING A STACK OF PLURALITY OF SUCH HEAT EXCHANGER ELEMENTS

摘要

A cross flow heat exchanger element comprising a bag (1) of thin polymeric material with transverse seams (8) forming inclined conduits (9) for vapour to flow therethrough. The bag (1) is held vertically with a liquid feeding strip (5) having vertical ducts (13) attached outside the bag for feeding a liquid therethrough to flow over the surface of said bag (1). A vapour inlet plate (6) with vapour ducts (14) is attached into the higher end of said inclined conduits (9) in the bag (1) and a vapour and condensate outlet plate (7) with outlet ducts (15) is attached into the lower end of said transverse inclined conduits (9) in the bag (1) to facilitate transverse flow heat exchange between the liquid and vapour. Plurality of such heat exchanger elements are stacked to form a heat exchanger.