A plate heat exchanger plate ports and, between the ports, a heat transfer area partly divided by a barrier. The heat exchanger plate comprises a first port, a second port, a third port and a fourth port. Further, the heat exchanger plate is provided with a first transition area between the first and second ports and the heat transfer area, and a second transition area between the third and fourth ports and the heat transfer area, the first and second transition areas being provided with transition ports. The first transition area is open towards the heat transfer area, and the second transition area is separated from the heat transfer area by a sealing.

A liquid panel assembly configured to be used with an energy exchanger may include a support frame having one or more fluid circuits and at least one membrane secured to the support frame. Each of the fluid circuits may include an inlet channel connected to an outlet channel through one or more flow passages. A liquid is configured to flow through the fluid circuits and contact interior surfaces of the membrane(s). The fluid circuits are configured to at least partially offset liquid hydrostatic pressure with friction loss of the liquid flowing within the fluid circuits to minimize, eliminate, or otherwise reduce pressure within the liquid panel assembly.

A liquid panel assembly configured to be used with an energy exchanger may include a support frame having one or more fluid circuits and at least one membrane secured to the support frame. Each of the fluid circuits may include an inlet channel connected to an outlet channel through one or more flow passages. A liquid is configured to flow through the fluid circuits and contact interior surfaces of the membrane(s). The fluid circuits are configured to at least partially offset liquid hydrostatic pressure with friction loss of the liquid flowing within the fluid circuits to minimize, eliminate, or otherwise reduce pressure within the liquid panel assembly.

A brazed heat exchanger includes plates that are stacked or nested to define flow channels for multiple media. Inserts are arranged within at least some of the flow channels. Two different braze alloys having compositions based on different metals are used to form braze joints between the plates and the inserts. In some cases, a copper-based braze alloy is used for joints corresponding to flow channels for one of the media in order to provide high pressure-resisting strength to those flow channels, while an iron-based braze alloy is used for joints corresponding to flow channels for another of the media where dissolved copper is undesirable.

A brazed heat exchanger includes plates that are stacked or nested to define flow channels for multiple media. Inserts are arranged within at least some of the flow channels. Two different braze alloys having compositions based on different metals are used to form braze joints between the plates and the inserts. In some cases, a copper-based braze alloy is used for joints corresponding to flow channels for one of the media in order to provide high pressure-resisting strength to those flow channels, while an iron-based braze alloy is used for joints corresponding to flow channels for another of the media where dissolved copper is undesirable.

A plate heat exchanger includes a heat exchanger plate having a heat transfer area and an edge area, extending around the heat transfer area. The heat exchanger plate is a double wall plate formed by two adjoining plates compressed to be in contact with each other. A sensor configured to sense at least one parameter and to produce a signal depending on the parameter includes a sensor probe that is provided between the adjoining plates.

A plate heat exchanger includes a heat exchanger plate having a heat transfer area and an edge area, extending around the heat transfer area. The heat exchanger plate is a double wall plate formed by two adjoining plates compressed to be in contact with each other. A sensor configured to sense at least one parameter and to produce a signal depending on the parameter includes a sensor probe that is provided between the adjoining plates.

The flow passage structure comprises: a plural number of ceramic flow passage layers laminated with one another, inside of which a flow passage is formed; two outermost layers disposed on respective sides of the plural number of flow passage layers in a lamination direction where the flow passage layers are laminated; an outer elastic sheets made of an elastic body, which is interposed between each of the outermost layers and the flow passage layer adjacent thereto; and a fastening member fastening the two outermost layers to each other, in a state that the two outermost layers sandwich the flow passage layers from both sides in the lamination direction.

A porthole gasket is configured to seal a circumferential region around two overlapping portholes in two adjacent heat exchanger plates of a plate heat exchanger, so as to define a passage for a fluid into or out of the plate heat exchanger. The porthole gasket has a ring-shaped portion to be compressed between the two adjacent heat exchanger plates while surrounding the overlapping portholes. The porthole gasket further comprises a plurality of projections that protrude from an outer perimeter of the ring-shaped portion and are configured to be compressed between the two adjacent heat exchanger plates so as to support the ring-shaped portion against pressure exerted by the fluid. A plate package for a plate heat exchanger is configured to include the two adjacent heat exchanger plates and the porthole gasket.

A porthole gasket is configured to seal a circumferential region around two overlapping portholes in two adjacent heat exchanger plates of a plate heat exchanger, so as to define a passage for a fluid into or out of the plate heat exchanger. The porthole gasket has a ring-shaped portion to be compressed between the two adjacent heat exchanger plates while surrounding the overlapping portholes. The porthole gasket further comprises a plurality of projections that protrude from an outer perimeter of the ring-shaped portion and are configured to be compressed between the two adjacent heat exchanger plates so as to support the ring-shaped portion against pressure exerted by the fluid. A plate package for a plate heat exchanger is configured to include the two adjacent heat exchanger plates and the porthole gasket.