Abstract: A surfacing tile, having a convex and concave surface and two spaced apart sides, is made of a material that allows at least a portion of the solar energy impinging upon the tile to be transmitted through the tile and be absorbed by a supporting surface thereunder. Once absorbed by the surface, most of the energy is prevented from escaping by the glazing effect of the tile. The tile, together with the underlying surface, forms an airspace therebetween such that a plurality of interfitting tiles installed upon the surface will form ducts that can conduct a fluid, such as air, heated by the absorbed solar energy to a location at which it can be used or dissipated. Tiles installed in such a fashion thus form a solar energy collection system directly with the surface upon which they are installed.

Abstract: A fuel injector 46 for a turbine engine includes an elongated, generally cylindrical metal casting 76 having a cylindrical surface 78 terminating in an end 84 having a frustoconical surface 86. A bore 88 having an axis 89 normal to the frustoconical surface 86 extends through the casting 76 to provide an air inlet 90 in the cylindrical surface 78 and a fuel and air outlet 94 in the frustoconical surface 86. The bore 88 is narrowed at the outlet to provide a constriction 110 thereat. A curved tube 96 of substantially lesser diameter than the bore 88 is located within the bore 88 to serve as a fuel injecting tube and has an open end 100 on and normal to the axis 89 and located in close adjacency to the constriction 110 without increasing the resistance to air flow through the constriction 110.

Abstract: A compact, unfired, staggered tube, once-through steam generator or boiler of simple construction intended primarily for combined cycle power plants in which the thermal energy utilized to generate steam is obtained from the exhaust gases of a gas turbine engine. The boiler provides steam at two different pressure levels, which maximizes recovery of thermal energy; and all wettable components in the steam/water loop are fabricated of corrosion resistant materials. This eliminates the need for controlling the pH of the feedwater and the need for chemically controlling its dissolved oxygen content, thereby reducing maintenance and operating costs and making automatic, unattended, remotely controlled operation of the boiler practical as well as eliminating the need for blowing down the boiler and minimizing requirements for make-up water. The boiler can be operated dry to remove gas side fouling; and feedwater flow rates can be directly controlled.

Abstract: A fuel injector 46 for a turbine engine includes an elongated, generally cylindrical metal housing 76 having a cylindrical surface 78 terminating in an end 84 having a frustoconical surface 86. A bore 88 having an axis 89 normal to the frustoconical surface 86 extends through the housing 76 to provide an air inlet 90 in the cylindrical surface 78 and a fuel and air outlet 94 in the frustoconical surface 86. The bore 88 is narrowed at the outlet to provide a constriction 110 thereat. A curved tube 96 of substantially lesser diameter than the bore 88 is located within the bore 88 to serve as a fuel injecting tube and has an open end 100 on and normal to the axis 89 and located in close adjacency to the constriction 110 without increasing the resistance to air flow through the constriction 110.

Abstract: The combustion dynamics and efficiency of a gas turbine having an annular combustor 26 provided with fuel injection nozzles 50 that inject fuel generally tangentially is improved by providing the walls 32, 34, 39 of the combustor 26 with cooling air film injectors 70, 86; 72, 88; 74, 90 at substantially equally angularly spaced locations about each such wall and which are oriented to generally tangentially inject a film-like air stream on the associated wall 32, 34, 39.

Abstract: A compact, unfired, staggered tube, once-through steam generator or boiler of simple construction intended primarily for combined cycle power plants in which the thermal energy utilized to generate steam is obtained from the exhaust gases of a gas turbine engine. The boiler provides steam at two different pressure levels, which maximizes recovery of thermal energy; and all wettable components in the steam/water loop are fabricated of corrosion resistant materials. This eliminates the need for controlling the pH of the feedwater and the need for chemically controlling its dissolved oxygen content, thereby reducing maintenance and operating costs and making automatic, unattended, remotely controlled operation of the boiler practical as well as eliminating the need for blowing down the boiler and minimizing requirements for make-up water. The boiler can be operated dry to remove gas side fouling; and feedwater flow rates can be directly controlled.

Abstract: The combustion dynamics and efficiency of gas turbine having an annular combustor 26 provided with fuel injection nozzles 50 that inject fuel generally tangentially is improved by providing the walls 32, 34, 39 of the combustion 26 with cooling air film injectors 70, 86; 72, 88; 74, 90 at substantially equally angularly spaced locations about each such wall and which are oriented to generally tangentially inject a film-like air stream on the associated wall 32, 34, 39.