A process of producing potable water, by combining a hydrocarbon containing fossil fuel with oxygen, in a combustion device, such as a home heating or utility unit to produce a flue gas of water vapor and carbon dioxide, and condensing the water vapor in the flue gas to yield potable water. The combustion device can produce heat or electricity. The water vapor can be condensed with one or more heat exchange devices. The source of oxygen can be air, pure oxygen, or nitrogen reduced air. The source of oxygen can be humidified, such as with a non-potable water source or non-potable water can be added to the flue gas. The carbon dioxide and/or nitrogen in the flue gas can be reduced or removed before the condensation step(s). The pressure of the flue gas can be increased prior to condensation of the water vapor. Natural gas is a preferred fuel.

In one aspect, the present invention is directed to boiler heating system, comprising: a hollowed-walls cylinder, for storing therein water to be heated; a partition in a form of a cylinder, disposed inside the hollowed-walls cylinder, distantly from its vertical walls; the partition having an upper water passage and a lower water passage, for allowing water transition between the inner side of the partition and the outer side of the partition; a heating element disposed inside the inner space of the hollowed-walls cylinder; a water inlet, disposed in the lower side of the hollowed-walls cylinder; and a water outlet, disposed in an upper side of the hollowed-walls cylinder, thereby (a) allowing heating the water without being in direct contact between the heating element and the water, resulting with no scale accumulation, and (b) separation between ascending water and descending water, thereby accelerating the water warming.

In one aspect, the present invention is directed to boiler heating system, comprising: a hollowed-walls cylinder, for storing therein water to be heated; a partition in a form of a cylinder, disposed inside the hollowed-walls cylinder, distantly from its vertical walls; the partition having an upper water passage and a lower water passage, for allowing water transition between the inner side of the partition and the outer side of the partition; a heating element disposed inside the inner space of the hollowed-walls cylinder; a water inlet, disposed in the lower side of the hollowed-walls cylinder; and a water outlet, disposed in an upper side of the hollowed-walls cylinder, thereby (a) allowing heating the water without being in direct contact between the heating element and the water, resulting with no scale accumulation, and (b) separation between ascending water and descending water, thereby accelerating the water warming.

The utility model relates to thermal power engineering, particularly to heating devices in which wood fuel undergoes high-temperature gasification (pyrolysis). The problem which the claimed utility model addresses is that of the consistent and environmentally clean combustion of wood fuel possessing a natural (that is, high) moisture content. The technical result is achieved in that the device includes a vertically-oriented additional gas duct through which the moisture contained in the fuel is removed in the form of of steam from the upper part of a fuel hopper to a flame in an afterburn chamber, wherein carbon monoxide mixed with steam is burned off and does not enter the atmosphere.

A stove includes a stove chamber, a chimney, and a water heater couplable to the chimney. The stove chamber includes a body with an opening. The stove chamber includes one or more interchangeable reducers couplable to the body. The one or more interchangeable reducers includes an opening of a selected size. The opening is at least partially coverable by a door of a door assembly. The stove chamber includes a fuel tray. The stove includes a stand couplable to the body and configured to raise the body a selected height from a ground surface. The chimney includes a stove pipe with one or more sections and a flue cap couplable to the stove pipe. The water heater includes a water heater body and a spout couplable to the water heater body. At least one of the stove chamber or the water heater includes one or more insulation layers.

A stove or a stove body has a trigger control that directs toxic fumes to the stovetop during cooking and to a side outdoor venting channel when cooking container is removed from the stovetop to ensure safe release of toxic fumes.

A stove or a stove body has a trigger control that directs toxic fumes to the stovetop during cooking and to a side outdoor venting channel when cooking container is removed from the stovetop to ensure safe release of toxic fumes.

A heater having a combustion chamber. The heater includes a hopper and a chute extending from an outlet of the hopper to the combustion chamber. The heater includes a chute extending from the hopper to the combustion chamber, a screw extending through the chute into the hopper, and a drive connected to the screw for turning the screw in a direction in which the flight would, but for downward forces, lift the fuel. The heater has a vane rotatably attached to the screw that rotates downward along the screw in absence of upward forces counteracting gravity. The vane is cambered to produce upward forces when turning with the screw beneath an upper surface of the fuel. The vane is biased toward the upper surface of the fuel to level the upper surface of the fuel and prevent the fuel from rat holing and arching.