Alfa Laval

The present invention relates to a heat exchanger cassette comprising: an upper heat exchanger plate (100, 100:1), and a lower heat exchanger plate (100, 100:2). An edge portion (110) of the lower heat exchanger plate (100:2) comprises an evacuation hole (160) circumscribed by a sealing area (162) formed at the top side (101) of the lower heat exchanger plate (100:2). The sealing area (162) is adapted to seal against an evacuation gasket member (320). The sealing area (162) and the evacuation hole (160) are disposed at least partially within a cutout area (170) of the upper heat exchanger plate (100:1). A boundary segment (180) of the cutout area (170) extends through the upper heat exchanger plate (100:1) between a first (182) and a second point (184) of an outer perimeter of the upper heat exchanger plate (100:1). A gasket arrangement (300) and a heat exchanger cassette arrangement (400) are also provided.

The present invention relates to a heat exchanger plate (100), a permeation barrier gasket arrangement (300), a plate arrangement (400) and a heat exchanger cassette (200). The heat exchanger plate (100) comprises an evacuation hole (140) arranged outside of a permeation barrier seat (120) at least partially circumscribing a port hole gasket seat (118). A permeation space (130) is defined between the permeation barrier seat (120) and the port hole gasket seat (118). An evacuation space (150) is defined by a portion (102a) of a first plate pattern (102) being recessed relative to a first abutment surface (122) such that the first abutment surface (122) partially circumscribes the evacuation space (150). The evacuation space (150) circumscribes the evacuation hole (104) and extends to the permeation barrier seat (120). The first abutment surface (122) is adapted to abut a corresponding abutment surface of a first adjoining heat exchanger plate (100). A second abutment surface (124) is defined on an opposite side and circumscribes the evacuation hole (140). The second abutment surface (124) is adapted to abut a corresponding abutment surface of a second adjoining heat exchanger plate (100).

The present invention relates to a gasket arrangement (300) for a plate heat exchanger (2). A permeation barrier gasket member (310) is adapted at least partially circumscribe a port hole gasket (350) such that a permeation space (130) is defined between the permeation barrier gasket member (310) and the port hole gasket (350). An evacuation gasket member (320) is adapted to circumscribe an evacuation hole (160) in the heat exchanger plate (100, 100a) such that an evacuation space (150) is formed within the evacuation gasket member (320), at the evacuation hole (160). A channel member (330) is adapted to fluidly connect the permeation space (130) and the evacuation space (150) by extending between an outlet opening (312) through the permeation barrier gasket member (310) and an inlet opening (322) through the evacuation gasket member (320). The permeation barrier gasket member (310), the evacuation gasket member (320) and the channel member (330) are separately formed. A heat exchanger plate (100 100a), a heat exchanger cassette (200) and a semi-welded plate heat exchanger (2) are also provided.

The present invention relates to a gasket arrangement (300, 300a) for a plate heat exchanger (2). An inner segment (350) is adapted to at least partially circumscribe a port hole (114) of a heat exchanger plate (100). An outer segment (310) is adapted to at least partially circumscribe the inner segment (350) to define a permeation space (130) between the inner segment (350) and the outer segment (310). An external segment (320, 320a) defining an evacuation space (150, 150a) is adapted to be arranged at least partially outside a footprint area of the heat exchanger plate (100). A channel (330) is adapted to fluidly connect the permeation space (130) and the evacuation space (150, 150a) by extending between an outlet opening (312) through the outer segment (310) and an inlet opening (322) through the external segment (320). A plate arrangement (400) comprising a gasket arrangement (300, 300a) and a heat exchanger plate (100) is also disclosed.

The disclosure relates to an iron-based brazing filler composition for bonding stainless steels, particularly austenitic stainless steels, the filler composition comprising an alloy containing: 17.0-26.0 wt% chromium (Cr), 8.0-22.0 wt% nickel (Ni), 5.0-15.0 wt% silicon (Si), 0.1-1.0 wt% boron (B), 0-0.1 wt% molybdenum (Mo), 0-2.0 wt% manganese (Mn), 0-0.25 wt% carbon (C), 0-0.05 wt% phosphorus (P), 0-0.03 wt% sulfur (S), 0-0.2 wt% nitrogen (N), 0-1.0 wt% niobium (Nb), 0-0.7 wt% titanium (Ti), 0-0.1 wt% cerium (Ce), the balance being iron (Fe), together with any unavoidable impurities. The disclosure further relates to a method for manufacturing a brazed product and to a brazed product manufactured by brazing objects with the iron-based brazing material.

A combustion system (100) for a marine vessel is disclosed, comprising a combustion chamber (110), a burner (120) configured to inject, into the combustion chamber, a first combustible mixture to generate a first flame and a second combustible mixture to generate a second flame, and a fuel supply system (130) configured to provide a first fuel to the first combustible mixture and a second fuel to the second combustible mixture, wherein the second fuel is an ammonia-based fuel. The system further comprises a heating device (140) configured to heat at least some of the second fuel to a temperature allowing the second fuel to decompose into hydrogen and nitrogen, thereby increasing a hydrogen content of the second combustible mixture. The heating device is arranged at the burner and configured to transfer heat from the second flame to the second fuel.

A thin-film temperature sensor arrangement comprising a metal substrate, a thin-film adhesion and electrical insulation layer on the metal substrate, and a thin-film temperature sensor on the thin-film adhesion and insulation layer, wherein the thin-film adhesion and insulation layer comprises an inorganic oxide, an inorganic nitride or an inorganic oxynitride.

A heat exchanger plate for a gasketed plate heat exchanger (GPHE), comprising:a base plate having a first surface and a second surface, wherein the first surface is configured to be in contact with a first fluid, and the second surface is configured to be in contact with a second fluid for the purpose of heat transfer between the first and second fluids,the base plate having a heat transfer area and an edge area, which extends around and outside the heat transfer area, wherein the heat transfer area and the edge area of the base plate are separated by a gasket path,characterised in that the base plate comprises an integrated thin-film temperature sensor configured to measure a temperature in the heat transfer area.

A plate heat exchanger comprises a package of heat exchanger plates, each with a peripheral portion and several aligned through flow ports. The plates are permanently joined to form flow passages for two heat exchange media. First inlet and outlet channels communicate with every other flow passage, while second inlet and outlet channels communicate with the remaining passages. First guiding ribs in the port portions distribute the first heat exchange medium, and second guiding ribs do the same for the second medium. Fins in the heat exchange portion create parallel guide channels for both media. A mixing zone is configured between the fins and guiding ribs to equalize volume flow before entering the guide channels. Outermost guiding ribs prevent bypass flow between the plates and fins, ensuring efficient heat exchange.

The present invention relates to a filling system for a cooling tower. The filling system comprising a filling material being permeable to air and water. The filling material being electrically conductive. The filling system further comprising a first electrical connector and a second electrical connector that are operationally connected to the filling material and spaced apart in relation to each other. The filling system further comprising an electrical power source operationally connected to the first electrical connector and the second electrical connector and configured to supply an electric current to the filling material via the first electrical connector and the second electrical connector for reducing growth of microorganisms in the cooling tower.