Plate heat exchanger

A plate heat exchanger comprising a top head, a bottom head, four side panels and four corner girders, wherein the side panels and the corner girders extend along a longitudinal direction from the bottom head to the top head, wherein each side panel is associated with two corner girders, wherein the top head, the bottom head, the four side panels and the four corner girders are joined together to form a sealed enclosure for housing a plate pack of stacked heat-exchanging plates, wherein a continuous gasket assembly is arranged in a contact region between at least one side panel and two corner girders, the top head and the bottom head, wherein the gasket assembly is located in a groove, wherein the gasket assembly is a segmented gasket assembly composed of a plurality of gasket segments, wherein each gasket segment is made of graphite material, wherein the gasket assembly has a substantially rectangular-shaped transverse cross-section in a relaxed state with a certain height-dimension in an intended compression direction of the gasket assembly and with a certain width-dimension perpendicular to the intended compression direction, and wherein a height/width-ratio of the transverse cross-section of the gasket assembly in said relaxed state is in the range of 0.75-1.75.

A plate heat exchanger comprising a top head, a bottom head, four side panels and four corner girders, wherein the side panels and the corner girders extend along a longitudinal direction from the bottom head to the top head, wherein each side panel is associated with two corner girders, wherein the top head, the bottom head, the four side panels and the four corner girders are joined together to form a sealed enclosure for housing a plate pack of stacked heat-exchanging plates, wherein a continuous gasket assembly is arranged in a contact region between at least one side panel and two corner girders, the top head and the bottom head, wherein the gasket assembly is located in a groove, wherein the gasket assembly is a segmented gasket assembly composed of a plurality of gasket segments, wherein each gasket segment is made of graphite material, wherein the gasket assembly has a substantially rectangular-shaped transverse cross-section in a relaxed state with a certain height-dimension in an intended compression direction of the gasket assembly and with a certain width-dimension perpendicular to the intended compression direction, and wherein the height-dimension of the gasket assembly in the relaxed state is in the range of 5-25 mm, and wherein the width-dimension of the gasket assembly in the relaxed state is in the range of 4-20 mm.

A plate heat exchanger comprising a top head, a bottom head, four side panels and four corner girders, wherein the side panels and the corner girders extend along a longitudinal direction from the bottom head to the top head, wherein each side panel is associated with two corner girders, wherein the top head, the bottom head, the four side panels and the four corner girders are joined together to form a sealed enclosure for housing a plate pack of stacked heat-exchanging plates, wherein a continuous gasket assembly is arranged in a contact region between at least one side panel and two corner girders, the top head and the bottom head, wherein the gasket assembly is located in a groove, wherein the gasket assembly is a segmented gasket assembly composed of a plurality of gasket segments, wherein each gasket segment is made of graphite material, wherein the at least one side panel is pressed against said two corner girders, the top head and the bottom head, in a pressing direction by threaded members, and wherein a height-dimension of the gasket assembly in said pressing direction in a relaxed state is 15-35% larger than a total depth-dimension of the groove in said pressing direction.

A plate heat exchanger comprising a top head, a bottom head, four side panels and four corner girders, wherein the side panels and the corner girders extend along a longitudinal direction from the bottom head to the top head, wherein each side panel is associated with two corner girders, wherein the top head, the bottom head, the four side panels and the four corner girders are joined together to form a sealed enclosure for housing a plate pack of stacked heat-exchanging plates, wherein a continuous gasket assembly is arranged in a contact region between at least one side panel and two corner girders, the top head and the bottom head, wherein the gasket assembly is located in a groove, wherein the gasket assembly is a segmented gasket assembly composed of a plurality of gasket segments, wherein each gasket segment is made of graphite material, wherein the groove is located in a rectangular-shaped frame or flange that is located between the at least one side panel and the two corner girders, the top head and the bottom head such that:

• i) the at least one side panel is on one side of the rectangular-shaped frame or flange;
• and ii) the two corner girders, the top head and the bottom head are on an opposite side of the rectangular-shaped frame or flange.