Abstract: A package multiple pass flexible water tube boiler for converting water to steam. The boiler having an enclosure and diagonally offset upper and lower drums. The drums are connected by a series of staggered or offset water tubes. The water tubes comprise two sets of repeating tubes that are bent to substantially similar but not identical designs. The staggered tube arrangement optimizes heat transfer and minimizes the footprint of the unit.

Abstract: A package water tube boiler has offset upper and lower steam and water drums located adjacent its opposite side walls, with a generally square combustion chamber between the drums. Connecting the drums are generally L-shaped riser and downcomer tubes including convection tubes and radiant tubes extending in vertical and horizontal runs along the sides, top, and bottom of the combustion chamber. The tubes, especially the inboard radiant tubes, are configured, and their entrances and exits to and from the drums are located, so as to permit increased efficiency and steam generation capacity without increasing the package boiler's outside dimensions, to shield the drums from thermal radiation emanating from the combustion chamber, to locate the boiler's center of gravity equidistant from its side walls, and to fix the upper drum to and support it by the boiler's end walls.

Abstract: A fixing device includes a pressure application roller 120 pressed against a fixing belt 110 (or fixing roller) to be heated. One of the them is driven while the other follows the one in rotation. A recording medium S having a toner image thereon is moved to pass through a central part N1 of a press contact portion N, whereby the toner image is fused and fixed on the recording medium. High grip portions G are provided on both side ends of the fixing belt or the pressure application roller.

Abstract: A cogeneration apparatus comprising: a transporting structure, including a support frame, for transporting the cogeneration apparatus; an electrical generator, mountable on the support frame, for generating an electrical current; a driver, mountable on the support frame, for driving the electrical generator, said driver producing an exhaust gas when operated; and a heat recovery assembly, mountable on the support frame, for recovering heat from the exhaust gas. A novel valve and a novel boiler system preferred for use in the inventive cogeneration apparatus are also provided.

Abstract: A superheated steam generator having superheating steam tubes and boiler tubes fluidly connected to a boiler, wherein the steam tubes and boiler tubes extend, intermediate of a heat source and the boiler. Localized insulation is located adjacent the superheating steam tubes and intermediate of the boiler and the heat source to reduce heat transfer to the boiler in the region of the superheating steam tubes. To prevent local roiling within the boiler, the thermal resistance of the local insulation and the superheating steam tubes is substantially equal to the thermal resistance of the boiler tubes.

Abstract: A pressurized boiler assembly (e.g. with a circulating fluidized bed combustion chamber), including a pressure vessel pressurized to about 7-30 bar, has a minimum height, minimum number of through extending openings in the pressure vessel, and maximum accessibility to the controls and adjustments for the boiler. A steam drum is mounted by a flange joint above the boiler so that it extends horizontally, with the main body of the steam drum with the pressure vessel, but with a first end of the steam drum exteriorly of the vessel. The control and adjustment elements for the boiler, such as safety valves, pressure indicators, and water gauges, are mounted to the first end of the steam drum, exteriorly of the pressure vessel. A superheater having a discharge conduit is also mounted within the vessel below the steam drum, and the first end of the steam drum and the superheater discharge conduit are essentially the only elements associated with the boiler water and steam system passing through the pressure vessel.