127results about "Fire-box steam boilers" patented technology

A method for operating a syngas cooler is provided. The method includes channeling a flow of syngas into an annular cooling chamber having a longitudinal axis, injecting a cooling fluid into a manifold such that the cooling fluid is channeled substantially circumferentially about the annular cooling chamber, and discharging the cooling fluid from the manifold such that the cooling fluid contacts a surface of the cooling chamber at a predetermined angle relative to the axis of the cooling chamber.

An evaporator including a lower drum, an upper drum, and at least one tube extending between the lower drum and the upper drum. The plurality of tubes have fluid passageways therein extending from the lower drum to the upper drum. A duct is provided having a heating gas passageway provided therein. The at least one tube extends through the heating gas passageway. The fluid passageways define an overall flow path from the lower drum to the upper drum extending in a direction substantially counter-current to an overall flow path defined by the heating gas passageway extending from a gas inlet of the heating gas passageway to a gas outlet thereof.

A preferred embodiment supplemental heating system is fluidly connectable to a vehicle cooling system and includes a liquid heat generator operable for heating a cooling fluid delivered to the supplemental heating system from the vehicle's cooling system. The liquid heat generator includes a discharge passage connectable to a heater core of the vehicle and a inlet passage connectable to the vehicle's cooling system. The supplemental heating system further includes a control valve having an inlet connectable to an exit passage of a heater core of the vehicle, a discharge passage fluidly connected to the liquid heat generator, and a second discharge passage connectable to the vehicle's cooling system. The control valve is operable for controlling the proportion of cooling fluid exiting the heater core that is returned to the vehicle's cooling system and recirculated back to the liquid heat generator.

A heat regenerative engine uses water as both the working fluid and the lubricant. In operation, water is pumped from a collection pan and through a coil around a cylinder exhaust port, causing the water to be preheated by steam exhausted from the cylinder. The preheated water then enters a steam generator and is heated by a combustion chamber to produce high pressure super heated steam. Air is preheated in a heat exchanger and is then mixed with fuel from a fuel atomizer. An igniter burns the atomized fuel as the flames and heat are directed in a centrifuge within the combustion chamber. The speed and torque of the engine are controlled by a rocker and cam arrangement which opens a needle-type valve to inject high pressure super heated steam into a cylinder having a reciprocating piston therein. The injected steam expands in an explosive action on the top of the piston at high pressure forcing the piston down and drivingly rotating a linked crank cam and crankshaft. Exhaust steam is directed through a centrifugal condenser having an arrangement of flat plates. Cooling air from blowers circulates through the flat plates to condense the steam to a liquid state. The water condensation is returned to the collection pan for subsequent use in steam generation.

A water supply tank unit, attached to a heating apparatus having a moistening function, comprising an open/close member biased in a direction of departing from a unit body attached to the heating apparatus, and a water supply tank held in the open/close member so as to be attachable/detachable, wherein the water supply tank and the open/close member have protrusions respectively so that the protrusions climb over each other and are locked to each other in a process of attaching/detaching the water supply tank.

A combination space and hot water heater is comprised of an inner tank having an outer casing spaced therebout with insulation being interposed between the casing and the inner tank. The inner tank has a glass-lined inner surface and a heater is provided within the inner tank for heating a same volume of water within the inner tank. An anode is provided within the inner tank. A closed water circulating circuit is connected to the inner tank for circulating hot water from the tank through heat exchange means connected in the closed water circulating circuit. Preferably, but not exclusively, the heat exchange devices are radiators. The inner tank contains a predetermined same volume of recirculating water wherein minimal deposits are accumulated in the inner tank by not admitting fresh water thereby substantially preventing the build-up of deposits on heat exchange elements within the tank and the formation of harmful bacteria in radiators and corrosion and further wherein a high constant efficiency is achieved and the life expectancy of the hot water heater is substantially prolonged. At least one heat exchange coil is disposed in the inner tank and immersed in the water contained therein. The heat exchange coil is connected at one end to an outlet coupling to which a domestic hot water line is connected. An opposed end of the heat exchange coil is connected to an inlet coupling. The inlet coupling is connected to a pressurized water supply.

A portable steam generator for automobile washing is provided. The steam generator of the current application is to produce a steam of pressure 6 KG/cm² at a rate of 30 kg/hr. The steam generator uses natural gas as a heat source. The inner structure of the steam generator is designed to increase the contact of the heat with the steam generating chamber while minimizing heat exchanging tubes inside the chamber. The steam generator weights only 25 Kg and has dimension of 572 mm in height by 400 mm in outer diameter. Whole unit including gas burner is mounted on one structure.

A heat transfer system having a a radiant source, a first heat exchanger configured to permit a first fluid to flow therethrough, and a thermal shield configured to provide controlled radiative heat from the radiant source to the first exchanger. The radiant source is a flame. The thermal shield is a second heat exchanger configured to permit a second fluid to flow therethrough or a non-contact thermal shield fabricated from a material arranged to provide controlled radiative heat exposure from the radiant source to the first exchanger. Oxy/coal combustion systems are also disclosed.

A steam generator includes a furnace configured and adapted to generate a stream of furnace exit gases from the combustion of municipal solid waste fuel. At least one superheater is disposed within an upper portion of the furnace or backpass. The superheater is configured and adapted to superheat fluids within the superheater by facilitating heat transfer between fluids within the superheater and furnace exit gases outside the superheater. At least one waterwall furnace platen is disposed within the furnace upstream from the superheater, the waterwall furnace platen is configured and adapted to lower furnace exit gas temperature at the superheater by facilitating heat transfer between fluids within the waterwall furnace platen and furnace exit gases outside the waterwall furnace platen.

A compact gas fired steam generator comprises a water tank with designated steam separation zone, boiling zone and a solids separation zone, a burner for burning gaseous fuel with air for producing combustion products and a flat tubular type heat exchanger immersed in water in the water tank. The combustion products are passing through the heat exchanger in an indirect heat transfer relationship with water in boiling zone thereby boiling, circulating and evaporating the water in boiling zone and in an indirect heat transfer relationship with cold make up water passing upwardly through solids separation zone thereby preheating cold make up water and cooling combustion products and recovering latent heat and condensing moisture present in combustion products. The cooled combustion products are discharged to outdoors and the collected condensed moisture is discharged to drain. The produced steam is separated from the boiling water in steam separation zone, the solids present in the boiling water are separated from the circulating boiling water and accumulated in solids separation zone and the accumulated solids are cooled by the incoming cold make up water and intermittently discharged from solids separation zone by a water pump together with the incoming cold make up water to drain.

The high rate internal circulation of boiling water, the extended self cleaning heat transfer surfaces of the flat tubular type heat exchanger immersed in the boiling water, the recovery of latent heat from flue gases and the discharge of cooled solids with cold make up water provide an exceptionally compact steam generator with overall thermal efficiency of up to 95% and with maintenance free unattended operation. The compact steam generator can be used in humidifying of space air in buildings, in heating of air in domestic central air heating systems and in industrial processes requiring clean steam.

A boiler assembly including primary and secondary combustion chambers includes primary and secondary air controls for controlling combustion air to the chambers respectively. The air controls are operable between open positions to allow combustion in the chambers and a closed position in which the combustion air passages are fully sealed to fully interrupt combustion responsive to heating demands. The air controls are supported externally on the main housing of the boiler assembly so as to be modular and readily releasable from the main housing and the respective combustion air passages. The primary combustion chamber communicates with the secondary combustion chamber at a location partway in between introduction of the secondary combustion air and the exhaust passage.

As we move towards a hydrogen economy or use hydrogen as an energy carrier, the need to get heat energy and steam out of the hydrogen is arising more frequently. This invention addresses that need without the atmospheric pollutants which would result from burning carbon based fuels or hydrogen freely in the air. Presented is an invention which has very high overall efficiency and generates no oxides of carbon and nearly zero nitrogen oxide compounds. The generated steam can be used for comfort heating, process heating, electric generation and other common applications requiring steam. The invention can also be used for generation of hot water. The process of steam generation is accomplished by precisely metering the mixing and oxidation of hydrogen and oxygen under controlled conditions. The result of this oxidation reaction is simply only water and heat, which are used to generate steam.

A vaporizing heat exchanger (10, 68) is provided for vaporizing a fluid flow using a thermal energy containing flow. Flow paths (24, 26, 28) for each of the fluid flow and the thermal energy containing flow are located relative to each other such that the fluid flow makes multiple passes wherein the fluid is vaporized and subsequently superheated.

A method of controlling the operation of a pressurised steam boiler (50) heated by a burner (20), which includes the steps of a) monitoring the level of water in the boiler (50), b) monitoring the pressure of steam in the boiler (50), c) monitoring the firing rate of the burner (20), and d) controlling the flow rate of water into the boiler (50) having regard to the signals resulting from a) and b) and, at least for some signal conditions, also having regard to signals resulting from c). The level of water is detected by a pair of capacitance probe assemblies (58A and 58B).