Abstract: A building panel has an outer skin spaced from an inner skin, sandwiching an insulation material. A first end of the outer skin includes a step portion, an indented fastener receiving portion and a first flange. The first flange extends outwardly toward a surface of the outer skin. A seal is mounted on the first flange. The inner skin includes a first end. The inner skin first end includes a shelf and a second flange extending from the shelf. A second seal is positioned on the second flange. A second end of the outer skin includes a portion to receive an outer skin first end of an adjoining panel. A second end of the inner skin includes a portion to receive an inner skin first end of the adjoining panel.

Abstract: A building panel has an outer skin spaced from an inner skin, sandwiching an insulation material. A first end of the outer skin includes a step portion, an indented fastener receiving portion and a first flange. The first flange extends outwardly toward a surface of the outer skin. A seal is mounted on the first flange. The inner skin includes a first end. The inner skin first end includes a shelf and a second flange extending from the shelf. A second seal is positioned on the second flange. A second end of the outer skin includes a portion to receive an outer skin first end of an adjoining panel. A second end of the inner skin includes a portion to receive an inner skin first end of the adjoining panel.

Abstract: A building panel has an outer skin spaced from an inner skin, sandwiching an insulation material. A first end of the outer skin includes a step portion, an indented fastener receiving portion and a first flange. The first flange extends outwardly toward a surface of the outer skin. A seal is mounted on the first flange. The inner skin includes a first end. The inner skin first end includes a shelf and a second flange extending from the shelf. A second seal is positioned on the second flange. A second end of the outer skin includes a portion to receive an outer skin first end of an adjoining panel. A second end of the inner skin includes a portion to receive an inner skin first end of the adjoining panel.

Abstract: A wireless microphone system within an enclosure for use in lecture hall sound systems that enables facilitated passing of the system from one user to another and provides a less intimidating microphone configuration to grip and use than standard wireless microphones. The system can also include an integrated push-to-talk feature requiring activation before a user's comments will be picked up and amplified over the sound system. The system can also include a laser pointer allowing the user to reference objects while they speak into the device. A wireless mute button can also be provided so that the lecturer or discussion leader can control when the system will be operative. The audio transmitter can be substituted with a audio recorder to be used independently of an audio receiving system.

Abstract: An aft liner seal for a combustor for a gas turbine includes an inner shell having an inner and outer surface and central axis. The aft liner seal has an outer shell positioned over the inner shell that has an inner and outer surface and central axis coaxial with the inner shell. One of the outer surface of the inner shell or the inner surface of the outer shell has grooves angled relative to the central axis. The angled grooves and adjacent portions of the inner surface of the outer shell or the outer surface of the inner shell form cooling passages. The cooling air exits the cooling passages at an exit angle that is matched to a swirl angle of the combustor flow. Matching of the exit angle and the swirl angle minimizes shear of cooling air with respect to flow exiting the combustor liner.

Abstract: A downhole burner for a steam generator includes an injector and a cooling liner. Steam enters the burner through holes in the cooling liner. Combustion occurring within the cooling liner heats the steam and increases its quality and may superheat it. The heated, high-quality steam and combustion products exit the burner and enter an oil-bearing formation to upgrade and improve the mobility of heavy crude oils held in the formation. The injector includes a face plate, a cover plate, an oxidizer distribution manifold plate, and a fuel distribution manifold plate. The cooling liner has an effusion cooling section and effusion cooling and jet mixing section. The effusion cooling section includes effusion holes for injecting steam along the cooling liner surface to protect the liner. The effusion cooling and jet mixing section has both effusion holes and mixing holes for injecting steam further toward central portions of the burner.

Abstract: A downhole burner for a steam generator includes an injector and a cooling liner. Steam enters the burner through holes in the cooling liner. Combustion occurring within the cooling liner heats the steam and increases its quality and may superheat it. The heated, high-quality steam and combustion products exit the burner and enter an oil-bearing formation to upgrade and improve the mobility of heavy crude oils held in the formation. The injector includes a face plate, a cover plate, an oxidizer distribution manifold plate, and a fuel distribution manifold plate. The cooling liner has an effusion cooling section and effusion cooling and jet mixing section. The effusion cooling section includes effusion holes for injecting steam along the cooling liner surface to protect the liner. The effusion cooling and jet mixing section has both effusion holes and mixing holes for injecting steam further toward central portions of the burner.

Abstract: A system and method for providing continuous measurement and control of a combustion device by altering the fuel composition delivered thereto. The system includes devices for sensing related information, such as fuel characteristics, combustion characteristics, or other device characteristics, and controlling the performance of the combustion device based on the sensed information. Performance control occurs via addition of one or more additives to the fuel to adjust combustion characteristics. Via such sensing and performance control, consistent combustion device performance may be maintained, despite varying fuel characteristics. In one variation, sensing occurs for the fuel delivered to the combustion device, and one or more additives are added to the fuel, based on the composition and flow rate for the fuel.

Abstract: A method and apparatus for reducing total pressure loss in the exhaust of a combustion device via an axial diffuser having no turning vanes, support struts, rods, or other obstructions to exhaust flow. The axial diffuser includes an inner wall and an outer wall each having a turn radius and forming an annular cross section having increasing cross-sectional area in the downstream direction of flow, the flow being transitioned from axial to radial direction thereby. The diffuser is supported in the plenum by rods, struts or a cradle; from a stand surrounding the axial diffuser via struts or rods; or from existing diffuser support structure by web stiffeners. The diffuser flow path turn radius of the outer wall ranges from about 50-95% of the radial distance from the inner wall to a wall of the exhaust plenum, and of the inner wall ranges from about 10-70% of this distance.