US Patent 7607472 Heat transfer plate, plate pack and plate heat exchanger

A heat transfer plate for a plate heat exchanger has a first port portion (A), a second port portion (B), and a heat transfer portion, which is disposed between the port portions (A, B). The first port portion (A) has a first vapor inlet port (1) which is intended for a first fluid in vapor form and which extends over essentially the whole width of the plate. The second port portion (B) has at least one first outlet port (2), which is intended for condensed vapor. The first port portion (A) has a second outlet port (4), which is disposed between the vapor inlet port (1) and the second port portion (B) and which is intended for a second fluid. The second port portion (B) has a second inlet port (3), which is intended for the second fluid.