UTILISER OF EXHAUST AIR HEAT FOR HEATING OF PLENUM AIR Russian patent published in 2013 - IPC F24F3/147 

FIELD: heating.

SUBSTANCE: utiliser of exhaust air heat for heating of plenum air includes a housing, a bank of parallel plates installed in it with formation of alternating channels for movement of exhaust and plenum air flows and water-absorbing material; with that, plates are made from cellular material; cells have an inclination for water down flow; on cells there are holes with the diameter of 1-2 mm. With that, the holes located in lower part of the utiliser cells are covered with air-tight water outlet valves located on the outer side of cellular plates, which is covered with water-absorbing material. Honeycomb polycarbonate is used as cellular plates. Instead of being covered with water-absorbing material, the outer side of cellular plates of the honeycomb polycarbonate is rough and has water-absorbing properties.

EFFECT: considerable simplification of a structure; high degree of unification; low labour intensity of manufacture and high repairability; high heat transfer efficiency and reduction of probability of freezing at low ambient air temperatures.

3 cl, 3 dwg