Abstract: An apparatus for vaporizing a liquid and heating the vaporized liquid to an elevated temperature. The apparatus has a heat transfer wall having an outer surface for receiving heat and transferring the heat to an inner surface. A wick material is disposed so that a portion of the wick material is in contact with the inner surface and another portion is remote from the heat transfer wall. A wick support in contact with the wick material opposite the inner surface of the heat transfer wall provides structural support to the wick material and further provides a path for vaporized liquid to flow from the wick material. Vaporizable liquid is delivered to the portion of the wick material that is remote from the heat transfer wall and is allowed to migrate to the portion that is in contact with the inner surface. Heat from the inner surface converts the liquid to a vaporized liquid. Optionally, a gaseous fuel may be introduced into the wick support for pre-heating and mixing with the vaporized liquid.

Abstract: A bottom supported steam generator for burning solid fuel with a vertical tube bank connecting an upper steam drum with a lower water drum. Horizontal economizer tubes are interspersed between the vertical tubes of the steam generating bank.

Abstract: A heat exchanger for recovering the heat energy content in furnace waste gases and for recovering much of the dust entrained therewith includes a hollow duct through which the waste gases pass, and which contains first and second tube bundles arranged one after the other and a dust collection surface therebetween. The heat content in the waste gases is transferred to water passing through the two tube bundles and dust is deposited on the dust collection surface.

Abstract: A boiler including a main bank of riser tubes and at least one downcomer tube which are connected by upper and lower headers of flat construction. The main bank of tubes being arranged within a housing the bank of riser tubes being adjacent a furnace combustion chamber.

Abstract: A water-tube boiler (1) of the "D" type is disclosed which includes a water-cooled rear wall comprising a plurality of vertically disposed riser tubes (14a, b) located at the rear end of the furnace chamber (5). Novel sealing means are disclosed for sealing the aforesaid rear wall to its adjacent vertically extending walls of the furnace chamber (5) and convection section (7). A further aspect of the invention lies in the particular feeder conduit means (9, 10, 11, 12, 13) provided for supplying water to the riser tubes of the water-cooled rear wall and also in the particular return conduit means (15a, b; 16a, b) provided for connecting the riser tubes (14a, b) to the steam drum (3). In yet another aspect of the invention, novel construction is provided associated with the convection section for discharging flue gases from the boiler.

Abstract: Disclosed herein is a marine steam boiler. It includes a furnace, and a convection section including a bank of steam generating tubes. The walls, roof and floor of the boiler are made into an air tight enclosure by being formed from finned water tubes adjacent ones of which are joined to one another by fins. The spacings of the adjacent tubes in the walls, floor and roof are all substantially identical. The water tubes forming these walls extend directly from a lower water drum through the walls to an upper steam water drum and so there is no difficulty of reduced circulation due to intervening headers. Also because the walls, roof and floor are air tight only a thin cover of refractory is required and this reduces problems of cracking when the boiler is used in a motor ship where it would be subject to considerable vibrations.

Abstract: A coal fired water tube boiler having a radiant heating section and a convection heating section, the two sections being independently fabricated and shop assembled into units small enough in size to be shipped by conventional carriers to the installation site where they are erected and tied together by connecting mating pipe and duct sections.