Abstract: A package water tube boiler having a novel radiant tube design which includes one or more additional tubes situated within the combustion section of the boiler. The novel tube design may be used in both hot water and steam applications.

Abstract: A system for aggregating a working fluid includes a fluid delivery line defining a fluid connection to at least one downstream process component; a plurality of collection lines each fluidically connected to a plurality of header lines by a respective set of header links; and a connecting junction fluidically connecting each of the plurality of collection lines to the fluid delivery line, the connecting junction including: at least one tee member oriented substantially perpendicularly with respect to the fluid delivery line, the at least one tee member connected to the fluid delivery line, and a plurality of branch fluid lines each fluidically coupling a respective one of the plurality of collection lines to the at least one tee member.

Abstract: A heat exchanger includes a plurality of serpentine or U-shaped first heat transfer tubes disposed in a case and formed by connecting a plurality of straight tube body portions, which are arranged at intervals in an up-down height direction so as to extend in a horizontal direction, in series via a first connecting tube body portion, upper side and lower side header portions connected to respective end portions of the plurality of first heat transfer tubes, and a second heat transfer tube disposed in the case so that upper side and lower side end portions thereof are connected respectively to the upper side and lower side header portions and configured such that an intermediate region, which excludes at least the respective end portions and a region of an uppermost portion that is adjacent to the upper side end portion, is constituted by tube body portions that are tilted over the entire length thereof so as to gradually decrease in height from one end side toward another end side of the intermediate region.

Abstract: A system includes a heat recovery steam generator (HRSG) configured to generate steam from a supply of feed water using exhaust gases. The HRSG includes a heater configured to receive a supply of steam and further heat the steam. The heater includes a first manifold and a first set of branch connections circumferentially spaced about a first circumferential axis of the first manifold. Each of the branch connections routes a fluid jet of steam into a lumen of the first manifold.

Abstract: In accordance with one embodiment of the present invention, a first vessel for holding a mixture of steam and water is disclosed. At least one first manifold is in fluid communication with the first vessel, the at least one first manifold is for receiving water from the first vessel. At least one second manifold is in fluid communication with the first vessel and in parallel spaced relation to the first manifold, the at least one second manifold is for returning a mixture of steam and water to the first vessel. At least one tube is in fluid communication with the at least one first manifold and the at least one second manifold, and a plurality of fins extends radially outward from an outer surface of the at least one tube.

Abstract: A steam generator for generation of steam in a water tube boiler having first and second upright headers in sealed communication with lower and upper inclining banks of tubes communicating therebetween. An end portion of the tubes in the upper bank, changes to a declining angle toward its communication with the upright header. The declining angle provides for increased separation of steam from hot water in the tubes.

Abstract: A boiler that enhances the efficiency of the use of heated gas streams to generate steam is provided. The boiler includes a lower drum, an upper drum, a plurality of conduits adapted to transfer heated fluid from the lower drum to the upper drum, a combustion chamber, and a series of heat transfer chambers adapted to receive combustion gases from the combustion chamber. The first of the heat transfer chambers is positioned above the second heat transfer chamber and receives the heated gas from the combustion chamber prior to the second heat transfer chamber. A method of operating the boiler is also provided. Though aspects of the invention are applicable to package boilers, other aspects of the invention are applicable for use in residential, commercial, or industrial settings.

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 support plate for retaining tube array spacing within a heat exchanger tube and shell structure. The support plate having a plurality of individual tube receiving aperture formed therein. Each apertures has at least three inwardly protruding members and bights are formed therebetween when the tube associated therewith is lodged in place to establish secondary fluid flow through the support plate. The inwardly protruding members terminate in flat lands that restrain but do not all contact the outer surface of the respective tube. These flat lands minimize fretting wear and eliminate potential gouging of the outer wall of the tube. The plate wall forming each aperture has an hourglass configuration which, inter alia, reduces pressure drop, turbulence and local deposition of magnetite and other particulates on the support plates.

Abstract: A fluid bed chamber assembly that is affixed to or incorporated onto the bottom portion of a combustion chamber of a package boiler assembly to increase combustion efficiency of the boiler. The fluid bed chamber assembly comprises a lower region and an upper region. The lower region having a plurality of inlet means for admitting fluidizing gas to the lower region for fluidizing a bed of particles contained therein, heat exchange tubes disposed about the side walls of the lower region, and first and second in-bed heat exchange tubes which are disposed substantially horizontal within the lower region. The upper region comprises at least one secondary air inlet means, at least one tertiary air inlet means, at least one fuel feed inlet means, and at least one recycle inlet means, all of which are disposed within the side wall of the conversion fluid bed chamber assembly.