Abstract: A heat exchanger unit comprises a support on which is positioned a plurality of stays mounted at spaced locations. A horizontally extending bracket is secured to each of the stays and a plurality of connected heat exchanger plates are suspended from their upper ends from the brackets. The plates have heat media carrying channels which are joined together. The support advantageously comprises a steel ring to which the brackets are attached and which extend radially inwardly also radially outwardly. The heat exchanger plates are rectangularly shaped and are suspended from each bracket so that it hangs freely downwardly. Wire guards extend between the plates to prevent them from deflecting and contacting each other. The construction permits the elimination of spaced support elements which interfere with free heat exchange flow between the plates.

Abstract: A plastic heat exchanger comprises a single heat exchanger construction made up of a plate having two spaced apart walls and with a plurality of substantially parallel cross webs interconnecting the two walls which define a multiplicity of longitudinal heat transfer medium flow channels. The plate is assembled with a distribution and collection element which has spaced apart walls which are adapted to be arranged in abutting relationship with the walls of the plate and welded together with them to form a unit. The distribution and collecting element includes at least one heat transfer fluid plastic nipple inlet connection and at least one heat transfer fluid plastic nipple outlet connection. Advantageously, each unit may be interconnected by means of a plate which connects one nipple element of one distribution connecting element with a different nipple element of the next adjacent distribution and collection element.