Plate fin with hybrid hole pattern

A fin, comprising:

• a fin width extending between a leading edge and a trailing edge;
• a plurality of leading holes centered along a leading axis;
• a plurality of secondary holes positioned along a secondary axis between the leading axis and the trailing edge, each of the plurality of secondary holes substantially aligned with a corresponding one of the plurality of leading holes along a path substantially parallel to the fin width;
• and
• a plurality of additional holes positioned between the secondary axis and the trailing edge;
• wherein the plurality of additional holes comprises a plurality of tertiary holes positioned along a tertiary axis between the secondary axis and the trailing edge, each of the plurality of tertiary holes being substantially equidistant from the respective two nearest secondary holes;
• wherein the plurality of additional holes further comprises a plurality of trailing holes positioned along a trailing axis between the tertiary axis and the trailing edge, each of the plurality of trailing holes being substantially aligned with a corresponding one of the plurality of secondary holes along paths substantially parallel to the fin width;
• and
• wherein the plurality of leading holes form a first occurring column of holes adjacent the leading edge, wherein the plurality of secondary holes form a second occurring column of holes, and wherein no column of holes configured to receive refrigerant tubing therethrough lies between the first occurring column of holes and the second occurring column of holes.

A fin, comprising

• a leading edge;
• a trailing edge opposing the leading edge;
• a plurality of leading holes substantially centered along a leading axis;
• a plurality of secondary holes substantially centered along a secondary axis, the secondary axis being substantially parallel to the leading axis and located between the leading axis and the trailing edge, the plurality of secondary holes being located so that the plurality of leading holes and the plurality of secondary holes form a substantially rectangular matrix;
• and
• a plurality of trailing holes substantially centered along a trailing axis, the trailing axis being substantially parallel to at least one of the leading axis and the secondary axis and located between the secondary axis and the trailing edge, each of the plurality of trailing holes being substantially equidistant from the respective two nearest secondary holes;
• and a plurality of additional holes substantially centered along an additional axis, the additional axis being substantially parallel to at least one of the leading axis, the secondary axis, and the trailing axis, and located between the trailing axis and the trailing edge, each of the plurality of additional holes being substantially equidistant from the respective two nearest trailing holes;
• wherein the leading holes, the secondary holes, the trailing holes, and the additional holes of the leading axis, the secondary axis, the trailing axis, and the additional axis, respectively, form four consecutively located columns of holes.