Abstract: A system may comprise a first plate arranged directly against a second plate and defining a gasket groove, the plates each parallel to one another and to a plane; and a gasket formed in a plane and having a sinusoidal variation in a direction normal to the plane. The first and second plate may form a bipolar plate and may be used as a component of a fuel cell. The section of the gasket with sinusoidal variation may be fit to the groove. The gasket may have a bead that may fit to a fitting, such as a gasket, on another plate or surface to seal the contents of a fuel cell.

Abstract: A plate and frame style heat exchanger is disclosed herein the heat exchanger is formed by a plurality of heat exchange plates and frame members that are alternatingly stacked together to form fluid channel members. The frame members are formed by lengths of material that are formed or bent into the desired configuration for providing a first fluid tight seal around the periphery of the plates and a second fluid tight seal around respective fluid openings formed in the heat exchanger plates in order to achieve the desired flow configuration through the heat exchanger. In some embodiments the frame members are made up of two mating frame portions that join together in a self-aligning and self-fixturing relationship to facilitate assembly.

Abstract: A heat exchanger has at least one channel structure defining a fluid flow passage. Each channel structure includes first and second thermally conductive plates, with a fluid flow passage defined by a space between the inner surfaces of the first and second plates. At least one electrical heating element is provided outside the fluid flow passage and located adjacent to the outer surface of the first plate, such that heat from the heating element is transferred through the first plate to the fluid in the flow passage during use of the heat exchanger. In some embodiments, the first plate of the first channel structure is arranged opposite to the first plate of the second channel structure, with spacers received between the first and second channel structures. At least one of the spacers may have fluid transfer openings to provide flow communication between the first and second channel structures.

Abstract: A plate and frame style heat exchanger is disclosed herein the heat exchanger is formed by a plurality of heat exchange plates and frame members that are alternatingly stacked together to form fluid channel members. The frame members are formed by lengths of material that are formed or bent into the desired configuration for providing a first fluid tight seal around the periphery of the plates and a second fluid tight seal around respective fluid openings formed in the heat exchanger plates in order to achieve the desired flow configuration through the heat exchanger. In some embodiments the frame members are made up of two mating frame portions that join together in a self-aligning and self-fixturing relationship to facilitate assembly.