Abstract: An energy recovery system and a method of recovering energy are disclosed. In one arrangement, an exhaust gas conduit system guides a flow of exhaust gas generated by a combustion process. A heat exchange fluid circuit guides a flow of a heat exchange fluid. An electrical generator generates electrical power from the flow of heat exchange fluid. The heat exchange fluid circuit is configured so that heat is transferred from the exhaust gas to the heat exchange fluid while the exhaust gas is flowing through the exhaust gas conduit system.

Abstract: An energy recovery system and a method of recovering energy are disclosed. In one arrangement, an exhaust gas conduit system guides a flow of exhaust gas generated by a combustion process. A heat exchange fluid circuit guides a flow of a heat exchange fluid. An electrical generator generates electrical power from the flow of heat exchange fluid. The heat exchange fluid circuit is configured so that heat is transferred from the exhaust gas to the heat exchange fluid while the exhaust gas is flowing through the exhaust gas conduit system.

Abstract: A rotor assembly has a sealing system for sealing at apexes or faces of the rotor. An apex seal or face seal comprises a compliant member that is configured such that the shape or orientation of the compliant member can change in use in response to a change in the speed of rotation of the rotor, a change in the pressurization across the compliant member, or a change in clearance between the sealing surface and a mounting element to which the compliant member is mounted, to deflect towards or away from the sealing surface.

Abstract: A seal arrangement for effecting a seal between first and second components arranged for relative rotation about a common axis. Seal arrangement includes a first seal surface associated with the first component, and a second seal surface associated with the second component. First and second seal surfaces are presented for air-riding interaction with one another during relative rotation between components such that, in use, a pressure drop is maintained across seal arrangement. First seal surface incorporates a plurality of spaced-apart hydrodynamic lift-generating features and plurality of ventilation recesses, each ventilation recess being interposed between respective pair of lift-generating features, and wherein each ventilation recess has depth measured normal to first seal surface which is greater than maximum dimension of each lift-generating feature measured normal to first seal surface. Seal arrangement may be embodied in compliant filament seal such as a leaf seal or a brush seal.

Abstract: The invention relates to a rotor assembly having a sealing system for sealing at apexes or faces of the rotor. In a disclosed arrangement the apex seal or the face seal comprises a compliant member that is configured such that the shape or orientation of the compliant member can change in use in response to a change in the speed of rotation of the rotor, a change in the pressurisation across the compliant member, or a change in clearance between the sealing surface and a mounting element to which the compliant member is mounted, to deflect towards or away from the sealing surface.

Abstract: A seal arrangement for effecting a seal between first and second components arranged for relative rotation about a common axis. Seal arrangement includes a first seal surface associated with the first component, and a second seal surface associated with the second component. First and second seal surfaces are presented for air-riding interaction with one another during relative rotation between components such that, in use, a pressure drop is maintained across seal arrangement. First seal surface incorporates a plurality of spaced-apart hydrodynamic lift-generating features and plurality of ventilation recesses, each ventilation recess being interposed between respective pair of lift-generating features, and wherein each ventilation recess has depth measured normal to first seal surface which is greater than maximum dimension of each lift-generating feature measured normal to first seal surface. Seal arrangement may be embodied in compliant filament seal such as a leaf seal or a brush seal.

Abstract: There is disclosed a leaf seal (131) for effecting a seal between first (134) and second 1) coaxial components arranged for relative rotation about a common axis. The seal is particularly suited for use in a gas turbine engine, and has: an annular pack (50) of stacked leaves (132) mountable to said first component (134) at root portions (140) of the leaves distal to the second component (51) and extending towards the second component (51) such that end edges(136) of the leaves (132) are proximal to the second component (51); and a plurality of seal elements (52) which cooperate to define an annulus extending around a surface (137) of the second component (51). Each seal element (52): forms a sector of the annulus; is mounted to the leaf pack (50) at the end edges (136) of a respective group of said leaves (132); and defines a respective seal surface (53) which is presented for interaction with said surface (137) of the second component (51) during relative rotation between the components.