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A combustor liner is provided on its backside cooling surface with a braze alloy coating and cooling enhancement material, preferably metallic particles to enhance the heat transfer between the liner and the cooling medium. The surface area of the backside coated area is increased substantially by t

A combustor liner is provided on its backside cooling surface with a braze alloy coating and cooling enhancement material, preferably metallic particles to enhance the heat transfer between the liner and the cooling medium. The surface area of the backside coated area is increased substantially by the coating and particles in relation to the uncoated surface areas. Consequently, the life of the liner is extended.

대표청구항 ▼

A combustor liner is provided on its backside cooling surface with a braze alloy coating and cooling enhancement material, preferably metallic particles to enhance the heat transfer between the liner and the cooling medium. The surface area of the backside coated area is increased substantially by t

A combustor liner is provided on its backside cooling surface with a braze alloy coating and cooling enhancement material, preferably metallic particles to enhance the heat transfer between the liner and the cooling medium. The surface area of the backside coated area is increased substantially by the coating and particles in relation to the uncoated surface areas. Consequently, the life of the liner is extended. substantially parallel arrangement in an annular configuration by the protruding dimples, the opposite surfaces of said adjacent coils forming substantially unobstructed continuous annular channels therebetween for moving fluid therethrough such that heat is transferred between a fluid moving through the channels and the coils with a minimum pressure drop in the fluid; and a cartridge containing the coiled annulus, the cartridge having an inner sleeve, an outer sleeve in spaced parallel arrangement from the inner sleeve with the coiled annulus being disposed therebetween, and a cage base connected between the inner sleeve and outer sleeve at one end of both sleeves, the cage base being substantially open with a plurality of bars adjacent an end of the coiled annulus for spacing the end of the coiled annulus from an engine structure against which the cartridge is installed. 16. A multi-channel thermal regenerator for a heat engine, comprising: a coiled annulus of thin flat carbon sheet material having a plurality of fibers oriented generally circumferentially around the coiled annulus, the material having a higher thermal conductivity in a direction along the axes of the fibers, the material being coiled so that individual coils are in spaced substantially parallel arrangement in an annular configuration, the opposite surfaces of said adjacent coils forming substantially unobstructed continuous annular channels for moving fluid therethrough; and a ceramic string woven between the coils radially across the annulus at a plurality of locations around the annulus to maintain the spaced substantially parallel arrangement of the coils such that heat is transferred between a fluid moving through the channels and the coils with a minimum pressure drop in the fluid. 17. A method of making a regenerator for a heat engine comprising the steps of: embossing a thin sheet of metal to form a pattern of spaced discrete embossments that protrude a uniform amount from the surface of the sheet; wrapping the embossed sheet about a longitudinal axis into a coiled annulus such that individual coils are spaced apart by the embossments; and locating said embossments to provide parallel axial flow paths and unobstructed continuous annular channels for a working fluid of the heat engine that minimize pressure losses and maximize thermal conductivity. 18. The method of claim 17, wherein the embossments formed are protruding dimples. 19. The method of claim 18, wherein the pattern of embossments is a rectangular array. 20. The method of claim 17 further comprising the step of installing the coiled annulus into a cartridge having a substantially open structure adjacent an end of the coiled annulus; and maintaining the end of the coiled annulus spaces from an engine structure against which the cartridge is installed.