Heat exchanger

Abstract

The invention relates to an air-air heat exchanger as a regenerator, having at least one positionally fixed or movable storage mass through which alternately outside air and exhaust air flows in order to heat or cool the supply air of air-conditioned buildings and thereby save energy during the heating or cooling of interior spaces, wherein the storage mass has plastic, in particular propylene or is composed of plastic, in particular propylene.

1 . An air-air heat exchanger in the form of a regenerator, comprising at least one fixed or movable storage mass through which incoming outside air and outgoing inside air flow in order to warm or to cool the incoming air of air-conditioned buildings, and thus save energy when heating or cooling interior spaces, the storage mass being formed at least partially polypropylene. 
     
     
         2 . The heat exchanger according to  claim 1 , wherein the storage mass is assembled from parallel spaced polypropylene plate fins, through the intermediate spaces of which the air flows. 
     
     
         3 . The heat exchanger according to  claims 1 , wherein the polypropylene forms corrugated sheets, twin-walled sheets, or double-web sheets. 
     
     
         4 . The heat exchanger according to  claim 1 , wherein at least every second polypropylene plate fin is of corrugated shape. 
     
     
         5 . The heat exchanger according to  claim 2 , wherein polypropylene plate fins or polypropylene corrugated material has a thickness of 0.1 mm to 0.3 mm. 
     
     
         6 . The heat exchanger according to  claim 2 , wherein the plate fins or the polypropylene corrugated material has a thickness of 0.15 mm. 
     
     
         7 . The heat exchanger according to  claim 3 , wherein the corrugation height is 2 to 4 mm. 
     
     
         8 . The heat exchanger according to  claim 2 , wherein the corrugation height is 3 mm. 
     
     
         9 . The heat exchanger according to  claim 1 , wherein two fixed polypropylene storage masses acting as two accumulators are provided parallel to each other through which incoming outside air and outgoing inside air are alternately conveyed. 
     
     
         10 . The heat exchanger according to  claim 9 , wherein each accumulator includes two or more storage packets composed of polypropylene plate fins.