A plate for a heat exchanger for heat exchange between a first and a second medium,
- wherein the plate (1) has a rectangular shape with two opposing long sides (1a and 1b) and two opposing short sides (1c and 1d),
- wherein the plate (1) is configured with at least one inlet porthole (2a) and at least one outlet porthole (2b) for the first medium and at least one inlet porthole (3a) and at least one outlet porthole (3b) for the second medium,
- wherein the plate (1) is configured with the inlet porthole (2a) for the first medium located in or close to a corner between one of the two long sides (1a or 1b) and one of the two short sides (1c or 1d) and the outlet porthole (2b) for the first medium located in or close to a corner between the same or the other long side (1a or 1b) and the other of said two short sides (1d or 1c),
- wherein the plate (1) is configured with the inlet porthole (3a) for the second medium located centrally between the two long sides (1a, 1b) and close to one of the two short sides (1c or 1d) and the outlet porthole (3b) for the second medium located centrally between the two long sides (1a, 1b) and close to the other of said two short sides (1d or 1c),
- wherein the plate (1) has a first heat transferring surface (A) for the first medium and an opposing second heat transferring surface (B) for the second medium,
- wherein the first heat transferring surface (A) of said plate (1) is configured with at least one barrier (5) forming part of a guide for the flow of the first medium during passage thereof between said inlet and outlet portholes (2a and 2b) therefor;
- wherein the plate (1) is configured with the inlet and outlet portholes (2a, 2b and 3a, 3b) for the first and second medium respectively, and with the at least one barrier (5) forming part of a guide for the flow of said first medium on the first heat transferring surface (A) of the plate, the at least one barrier forming a substantially U-shaped or sinusoidal through-flow duct (X) for the first medium which will permit passage of the flow of said first medium around said inlet porthole (3a) or said inlet and outlet portholes (3a and 3b) for said second medium during passage of said first medium between said inlet and outlet portholes (2a, 2b) therefor,
- wherein the plate (1) is configured with first adjacent dimples (13) around the inlet and outlet portholes (3a, 3b) for the second medium on the first heat transferring surface (A) of the plate located at a larger distance from each other on those parts of the circumferences of the portholes which face each other than on those parts which face away from each other,
- wherein the plate (1) is configured with second adjacent dimples (14) around the inlet and outlet portholes (3a, 3b) for the second medium on the second heat transferring surface (B) of the plate located at a larger distance from each other on those parts of the circumferences of the portholes which face away from each other than on those parts which face each other,
- wherein the inlet and outlet portholes for the second medium are provided with an inner peripheral edge,
- wherein the plate comprises a flow-path for the first medium surrounding the inlet and outlet portholes for the second medium on the first heat transferring surface of the plate, and
- wherein the flow path is bounded by on one hand the inner peripheral edge and on the other hand the first adjacent dimples around the inlet and outlet portholes for the second medium on the first heat transferring surface of the plate.