Patent ID: 7273516

Claim:
A heat exchanger for the exchange of heat between a first air stream and a second air stream, comprising: a plurality of plates delimiting first and second exchange spaces disposed next to each other in a direction transverse with respect to the plates, with each of the first exchange spaces at least one plate is conductive and wherein said first air stream is adapted to flow through said first exchange spaces, and said second air stream is adapted to flow through said second exchange spaces; an ionization device for ionizing particles entrained in said first air stream so that the particles deposit at said conductive plates of the first exchange spaces; a water distribution system with nozzles for periodically discharging water into said first exchange spaces for cleaning the plates of the heat exchanger from deposited particles, bacteria, algae and other deposits; and a water collection device provided in a lower region of the heat exchanger for discharging collected water.