Enhanced heat transfer surface

A heat transfer surface, comprising:

• a plurality of transverse rows of corrugations disposed adjacent to one another and extending in an axial direction;
• wherein each row of corrugations includes:
• a plurality of spaced apart upper and lower bridge portions;
• and
• a plurality of fin surface portions extending between and interconnecting the spaced apart upper and lower bridge portions;
• wherein the plurality of spaced apart upper and lower bridge portions and the plurality of fin surface portions are co-operatively configured such that an alternating series of upper and lower bridge portions interconnected by fin surface portions is formed;
• the plurality of rows of corrugations includes a plurality of sets of adjacent rows of corrugations, each set of adjacent rows corrugations comprising a first row, a second row and a third row;
• wherein for each set of adjacent rows of corrugations, the first row is offset relative to the second row such that there is an absence of alignment between a central axis that extends through an upper bridge portion of a corrugation defined by the second row with a central axis that extends through an upper bridge portion of a corrugation defined by the adjacent first row such that the central axis that extends through the upper bridge portion of the corrugation defined by the second row is laterally displaced relative to the central axis that extends through the upper bridge portion of the corrugation defined by the first row, by a predetermined distance, as measured along an axis that extends transverse to the axial direction of the heat transfer surface, and the third row is offset relative to the second row such that there is an absence of alignment between a central axis that extend through an upper bridge portion of a corrugation defined by the third row with the central axis that extends through the upper bridge portion of the corrugation defined by the second row such that the central axis that extends through the upper bridge portion of the corrugation defined by the third row is laterally displaced laterally relative to the central axis of the corrugation defined by the second row along the axis that extends transverse to the axial direction of the heat transfer surface;
• wherein:
• the plurality of sets of adjacent rows of corrugations are disposed in series such that the heat transfer surface is comprised of a repeating pattern of first, second and third rows of corrugations;
• and
• each row of corrugations in the repeating pattern of the first, second and third rows of corrugations includes a heat transfer enhancement feature disposed in the fin surface portions of the corrugations of each of the rows of corrugations such that the heat transfer enhancement feature is disposed intermediate adjacent upper and lower bridge portions in the alternating series of upper and lower bridge portions defined by each row of the corrugations.

A heat transfer surface, comprising:

• a pair of first and second spaced apart plates each plate defining an inner surface;
• a corrugated member disposed between the spaced apart first and second plates, the corrugated member including a plurality of transverse rows of corrugations disposed adjacent to one another and extending in an axial direction;
• wherein each row includes:
• a plurality of spaced apart upper and lower bridge portions;
• and
• a plurality of fin surface portions extending between and interconnecting the spaced apart upper and lower bridge portions;
• wherein the plurality of spaced apart upper and lower bridge portions and the plurality of fin surface portions are co-operatively configured such that an alternating series of upper and lower bridge portions interconnected by fin surface portions is formed defining a plurality of heat transfer enhancement-receiving spaces;
• the plurality of rows of corrugations includes at least a first row of corrugations and at least a second row of corrugations disposed in series in the axial direction such that the at least a first row and the at least a second row, together, define a pair of adjacent rows of corrugations;
• for each pair of adjacent first and second rows of corrugations, the first row is offset relative to the second row such that there is an absence of alignment between central axis that extends through an upper bridge portion of a corrugation defined by the second row with a central axis that extends through an upper bridge portion of a corrugation defined by the first row, the central axis of the corrugation defined by the second row being laterally displaced relative to the central axis that extends through the upper bridge portion of the corrugation defined by the first by a predetermined distance as measured along an axis that extends transverse to the axial direction of the corrugated member;
• a plurality of heat transfer enhancement features disposed on the inner surfaces of the first and second spaced apart plates such that one of the plurality of heat transfer enhancement features is disposed in each heat transfer enhancement-receiving spaced defined by the alternating series of upper and lower bridge portions interconnected by fin surface portions of each row of corrugations of the corrugated member.