Heat-exchange element

A heat-exchange element comprising:

• a plurality of heat-exchange components each having a circular heat-exchange plate;
• said circular heat-exchange plate having a plurality of ribs projecting from a surface thereof and extending in one direction, said circular heat-exchange plate having an outer circumferential edge thereof divided into four substantially equal edges, and including a pair of sealing ribs extending respectively along two diametrically opposite ones of said edges substantially parallel to said ribs, and a pair of end walls extending respectively along two other diametrically opposite ones of said edges substantially transversely to said ribs, said heat-exchange components being stacked into a cylindrical shape in which said end walls of each of the circular heat-exchange plates fittingly engage the sealing ribs of another one of the circular heat-exchange plates, and
• wherein each of said ribs has a plurality of teeth projecting laterally from a side thereof.

A heat-exchange element comprising:

• a plurality of heat-exchange components each having a circular heat-exchange plate;
• said circular heat-exchange plate having a plurality of ribs projecting from a surface thereof and extending in one direction, said circular heat-exchange plate having an outer circumferential edge thereof divided into four substantially equal edges, and including a pair of sealing ribs extending respectively along two diametrically opposite ones of said edges substantially parallel to said ribs, and a pair of end walls extending respectively along two other diametrically opposite ones of said edges substantially transversely to said ribs, said heat-exchange components being stacked into a cylindrical shape in which said end walls of each of the circular heat-exchange plates fittingly engage the sealing ribs of another one of the circular heat-exchange plates, and
• wherein said circular heat-exchange plate has a plurality of bosses projecting from at least one surface thereof and being disposed in vertically spaced relation from portions of an adjacent heat exchange plate.