Heat Exchange Plate

FIG. 1 is a perspective view of an ornamental design for a heat exchange plate;

FIG. 2 is a perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is an enlarged partial view of a portion defined by boundary lines in FIG. 1 ;

FIG. 10 is an enlarged partial view of a portion defined by boundary lines in FIG. 1 ; and,

FIG. 11 is a perspective view where elements forming no part of the claimed design are removed.

The dash-dash broken lines in the drawings depict the portions of the heat exchange plate which form no part of the claimed design; the dot-dash broken lines in the drawings depict the boundaries of the enlarged partial views that form no part of the claimed design.