Heat transfer plate and plate heat exchanger comprising such a heat transfer plate

Abstract

A heat transfer plate has first and second long sides, with a transition area adjoining the distribution area along a first borderline and adjoining a heat transfer area along a second borderline. The transition area includes a transition pattern comprising transition projections and depressions, and first, second and third sub-areas successively arranged between the first/second border lines. An imaginary straight line extends between two end points of each transition projection with a smallest angle α, n=1, 2, 3 . . . relative to a longitudinal center axis of the plate. The smallest angle varies between transition projections within the second sub-area such that the smallest angle for at least a main part of the transition projections within the second sub-area is larger than the first angle α, and the smallest angle for a main part of the transition projections within the first sub-area is essentially equal to the first angle.