A plate heat exchanger, comprising:
- a plate package having a first end plate, a second end plate and a plurality of heat exchanger plates arranged between the first end plate and the second end plate, the first end plate, the second end plate and the heat exchanger plates each comprising a first side, a second side and a center point through which an imaginary center axis extends in a direction perpendicular to a plane of at least the heat exchanger plates, and the second end plate and the heat exchanger plates each comprising a first port for a first medium, at least the first end plate and the heat exchanger plates each comprising at least a second port for a second medium and the first end plate, the second end plate and the heat exchanger plates each comprising a third port for the second medium;
- the first side having a sealing around the second port and the third port,
- a first sealing arranged on the second side, around the first port, a second sealing arranged on the second side, at an outer circumference of the heat exchanger plates and a third sealing is arranged between the first sealing and the second sealing to form a first heat transfer area and a second heat transfer area,
- wherein the second port is arranged in the first heat transfer area and the third port is arranged in the second heat transfer area,
- wherein the second heat transfer area is arranged for cooling the heat exchanger plates around the first port,
- wherein at least the heat exchanger plates that are adjacent to each other are arranged to form a first interspace between the first side thereof for the first medium and a second interspace between the second side thereof for the second medium,
- wherein the heat exchanger plates are arranged to form a passage in the radial direction between the first port of each of the heat exchanger plates and a circumference of the heat exchanger plates in the first interspace, so that the first medium can flow radially between the first port of each of the heat exchanger plates and a position outside the circumference of the heat exchanger plates in the first interspace,
- wherein the second end plate comprises a passage between the first heat transfer area and the second heat transfer area so that the second medium can flow between the first heat transfer area and the second heat transfer area, and such that the flow of the second medium through a radially outer part of the heat exchanger is an upward flow while the flow of the second medium in a radially inner part of the heat exchanger is a downward flow;
- and
- wherein the heat transfer plates are arranged in pairs such that the third port of the heat exchanger plates that define the second interspace are displaced around the center axis in relation to each other.