A heat exchanger and a ventilation assembly comprising it

Abstract

A heat exchanger includes two sets of channels arranged adjacent to each other, for beat exchange between a first and a second air stream. Each of the sets of channels includes at least one transversal drainage channel for drainage of condensate, and a ventilation assembly including such a heat exchanger.

1 . A heat exchanger comprising two sets of channels arranged adjacent to each other for heat exchange between a first and a second air stream, wherein each of the sets of channels comprise at least one transversal drainage channel for drainage of condensate. 
     
     
         2 . The heat exchanger according to  claim 1 , wherein the drainage channels are substantially vertical. 
     
     
         3 . The heat exchanger according to  claim 1 , wherein the channels have inside surfaces with a hydrophobic surface layer. 
     
     
         4 . The heat exchanger according to  claim 3 , wherein the surface layer has a nanostructure. 
     
     
         5 . The heat exchanger according to  claim 1 , wherein each set of channels for the air streams form an angle with the horizontal plane of 0 to 30°. 
     
     
         6 . The heat exchanger according to  claim 1  , wherein the drainage channels are connected to a collecting vessel. 
     
     
         7 . A ventilation assembly comprising a heat exchanger according to  claim 1 . 
     
     
         8 . The ventilation assembly according to  claim 7 , wherein the first and the second air streams are intake air and exhaust air, respectively, and in that means are arranged for evaporative cooling of the exhaust air before it is led into the channels of the heat exchanger. 
     
     
         9 . The ventilation assembly according to  claim 7 , wherein means are arranged for shifting between evaporative cooling of the intake air and the exhaust air, respectively. 
     
     
         10 . The ventilation assembly according to  claim 7 , wherein a mist generator is arranged in order to obtain the evaporative cooling.