A highly efficient indoor heating system and device is described. The device is equipped with an internal chimney, as well as vents that are configured to maximize the draft applied to the flame housed within a stove combustion area. The heater is configured to reach temperatures exceeding 300 degrees Fahrenheit in approximately ten minutes. A gravity fed fuel tube, potentially in communication with a wood pellet hopper, is configured to deliver fuel to the stove of the heater. Heat is distributed throughout the structure of the device, and a convection chamber within the device ensures that heat generated is not quickly lost via exhaust.

A biomass or bio-fuel combustion system is provided utilizing oxygen as the source of combustion. The system generally includes a primary combustion chamber defining an internal space for receipt of the biomass and a directional oxygen injector positioned within the combustion chamber and having a plurality of injection nozzles for injecting oxygen into the internal space, preferably at an angle relative to a longitudinal axis of the combustion chamber. A transfer chamber extends from the primary combustion chamber to a secondary combustion chamber for further combustion of any remaining particulates. A cooling and exhaust system extends from the secondary combustion chamber for drawing off and condensing out any exhaust and moisture contained in the remaining exhaust particulates. A method of burning a biomass of bio-fuel with producing nitrogen dioxide is also disclosed.

A combustion module including a body in which are formed several combustion chambers extending parallel to each other along a longitudinal direction between a first end face and a second end face of the body in which they emerge, the distance between the combustion chambers and/or the dimensions of the combustion chambers are chosen so as to reduce a temperature gradient transversal to the combustion chambers.

A highly efficient indoor heating system and device is described. The device is equipped with an internal chimney, as well as vents that are configured to maximize the draft applied to the flame housed within a stove combustion area. The heater is configured to reach temperatures exceeding 300 degrees Fahrenheit in approximately ten minutes. A gravity fed fuel tube, potentially in communication with a wood pellet hopper, is configured to deliver fuel to the stove of the heater. Heat is distributed throughout the structure of the device, and a convection chamber within the device ensures that heat generated is not quickly lost via exhaust.

A highly efficient indoor heating system and device is described. The device is equipped with an internal chimney, as well as vents that are configured to maximize the draft applied to the flame housed within a stove combustion area. The heater is configured to reach temperatures exceeding 300 degrees Fahrenheit in approximately ten minutes. A gravity fed fuel tube, potentially in communication with a wood pellet hopper, is configured to deliver fuel to the stove of the heater. Heat is distributed throughout the structure of the device, and a convection chamber within the device ensures that heat generated is not quickly lost via exhaust.

A cyclone separator for separating particles from a gas flow includes a gas inlet and a separating element. The separating element includes an upper cylindrical section connected to a gas outlet and a lower conical section connected to a particle outlet. The first end of the gas inlet is on a straight section, and the second end of the gas inlet in on a helical section. The second end is connected to the upper cylindrical section. The cross-sectional area of the gas inlet continually decreases, and the vertical or longitudinal dimension of the gas inlet continually increases from the first end towards the second end. The vertical dimension at the second end equals the diameter of the upper cylindrical section. A guide plate inside the straight section distributes the particles over the increasing vertical dimension of the gas inlet and prevents the particles from concentrating centrally in the gas flow.

A rotary grate with slit-shaped openings is used in fixed-bed gasifier that produces a product gas from biomass particles. The rotary grate supports the biomass particles. Each slit-shaped opening has a cross-section that conically widens in the direction from the upper to lower side of the grate. The slit-shaped openings act as planes to break up ash supported by the grate as a drive shaft rotates the grate. As the grate rotates, a dome-shaped covering in the middle of the grate causes ash to be spun laterally away from the middle and into the region of the grate where the slit-shaped openings are located. The slit-shaped openings extend concentrically around the middle of the grate. The combined open area of the slit-shaped openings on the upper side of the grate makes up between 20% to 40% of the grating surface area outside the dome-shaped covering on the upper side.

Methods and systems of power generation that integrate SCO.sub.2 Brayton and Rankin steam power cycles with fossil fuel combustion, One such method involves combusting a fuel material with an oxidizer material in a combustor to produce heat and a combustion exhaust. At least a portion of the combustion exhaust and a first portion of heat produced by the combustion processing are fed to a SCO.sub.2 Brayton power cycle to produce power and a second exhaust. At least a portion of the second exhaust and a second portion of heat produced by the combustion processing are feed to a steam Rankine power cycle to produce additional power and a third exhaust.

Methods and systems of power generation that integrate SCO.sub.2 Brayton and Rankin steam power cycles with fossil fuel combustion, One such method involves combusting a fuel material with an oxidizer material in a combustor to produce heat and a combustion exhaust. At least a portion of the combustion exhaust and a first portion of heat produced by the combustion processing are fed to a SCO.sub.2 Brayton power cycle to produce power and a second exhaust. At least a portion of the second exhaust and a second portion of heat produced by the combustion processing are feed to a steam Rankine power cycle to produce additional power and a third exhaust.

A method is provided for separating offgas from solid and/or liquid reaction products in the combustion of a metal M selected from alkali metals, alkaline earth metals, Al and Zn, and mixtures thereof, with a combustion gas. In a reaction step, the combustion gas is combusted with the metal M, forming offgas and further solid and/or liquid reaction products, and, in a separation step, the offgas is separated from the solid and/or liquid reaction products. In the separation step, a carrier gas is additionally added and the carrier gas is removed as a mixture with the offgas.