Various hot box fuel cell system components are provided, such as heat exchangers, steam generator and other components.

Various hot box fuel cell system components are provided, such as heat exchangers, steam generator and other components.

The invention relates to an exchanger arrangement (3) for the heat transfer and/or selective material transfer between a first fluid (F1) and a second fluid (F2), which can flow through the arrangement (3), said arrangement (2) being constituted of a multitude (n) of adjacent local exchanger elements (E.sub.1, E.sub.2, . . . , E.sub.n). The exchanger arrangement (3) has at least in some sections a cylindrical shape or the shape of a segment thereof or a prismatic shape having a polygonal base or the shape of a segment thereof. The adjacent local exchanger elements (E.sub.1, E.sub.2, . . . , E.sub.n) are flat structures that are either wedge-shaped or sheet-like.

Various hot box fuel cell system components are provided, such as heat exchangers, steam generator and other components.

Plate heat exchanger for internals of isothermal chemical reactors, said plate heat exchanger comprising a plurality of heat exchange plates (1) having an essentially rectangular shape, wherein each plate comprises two walls (2, 3) which are joined together along their perimeter, and wherein each plate comprises a respective first collector for feeding a heat exchange medium to the plate and a respective second collector for receiving said medium form the plate, said first collector and second collector being fixed to opposite sides of said plate, and at least one (10, 30) of said first collector and second collector comprises edge surfaces which are planar and parallel to respective planar end portions (12, 13) of said plate, to provide plane and parallel surfaces for automated welding.

A heat exchanger includes a heat exchanger body having a plurality of stacked panels defining an internal manifold and an external manifold. Each of the stacked panels includes an internal structure partially defining an internal manifold, an external structure partially defining the external manifold, and a plurality of ribs connecting the internal structure to the external structure. Each of the ribs further comprises a channel protruding into the rib and being paired with a corresponding rib of an adjacent panel, such that each of the ribs and the corresponding rib defining a cooling passage fluidly connecting the internal manifold to the external manifold. Each of the stacked panels is bonded to at least one adjacent stacked panel.

A gas turbine engine recuperator recuperator including exhaust passages providing fluid flow communication between an exhaust inlet and an exhaust outlet, the exhaust inlet being oriented to receive exhaust flow from a turbine of the engine and the exhaust outlet being oriented to deliver the exhaust flow to atmosphere, the exhaust passages having an arcuate profile in a plane perpendicular to a central axis of the recuperator to reduce a swirl of the exhaust flow. Air passages are in heat exchange relationship with the exhaust passages and providing fluid flow communication between an air inlet and an air outlet, design to sealingly respective plenum of the gas turbine engine.

An annular heat exchanger for a gas turbine engine is provided. The annular heat exchanger can include a first annular ring comprising a first main tube defined by a plurality of transduct segments; a second annular ring comprising a second main tube defined by a plurality of transduct segments and a curvilinear plate defining at least one channel therein that is in fluid communication with a transduct segment of the first main tube and a transduct segment of the second main tube.

The invention relates to a recuperator (7), comprising at least a recuperator unit with heat-exchanging channels (5, 6) extending parallel to each other, a first header (63) placed on a first side of the recuperator unit and having a triangular cross-section, one surface of which connects to a first end of the heat-exchanging channels (5, 6) of the recuperator unit, a second header (64) placed on the second side of the recuperator unit and having a triangular cross-section, one surface of which connects to the second side of the heat-exchanging channels (5, 6) of the recuperator unit, supply ducts (1, 4) extending to a second surface of the first and the second header (63, 64) and discharge ducts (2, 3) extending from the third surface of the first and the second header (63, 64), wherein the supply ducts (1, 4) and the discharge ducts (2, 3) extend transversely of the longitudinal direction of the heat-exchanging channels (5, 6), wherein the supply ducts (1, 4) and the discharge ducts (3, 4) extend on the sides of the headers (63, 64) lying opposite the recuperator units.

A heat exchanger defines an annulus divided by a plurality of radial plates extending longitudinal along the annulus, into a plurality of channels. A first group of the channels form an oil passage and a second group of channels form a fuel passage. The channels in the respective first and second groups are circumferentially alternately positioned one to another, and heat transfer from the oil passage to the fuel passage takes place through the radial plates.