A chimney starter booster has an air intake port and an air output port connected by internal ducting in the booster's housing. The air intake port is configured to accept a wireless fan blower. The fan blower supplies directed air through the ducting and out the air output port containing an air deflecting nozzle. A standard chimney starter sits on a top portion of the booster's housing, such that the directed air enters the bottom of the chimney starter to accelerate the burning of the charcoal.

The invention is a novel Top-Lit-Updraft cook stove with internal forced primary and secondary air, designed to burn biomass. The cook stove is specifically designed to cleanly burn biomass. The stoves design innovations include a cylinder-within-cylinder design to provide heated, forced secondary to the burner area right below the burner. The burner design addresses limitations in previous cookstove burner design by implementing a bluff body design to direct syngas to the secondary air jets, improving mixing and combustion of volatile gases.

The invention is a novel Top-Lit-Updraft cook stove with internal forced primary and secondary air, designed to burn biomass. The cook stove is specifically designed to cleanly burn biomass. The stoves design innovations include a cylinder-within-cylinder design to provide heated, forced secondary to the burner area right below the burner. The burner design addresses limitations in previous cookstove burner design by implementing a bluff body design to direct syngas to the secondary air jets, improving mixing and combustion of volatile gases.

A biochar kiln is disclosed. An example of the biochar kiln includes a kiln body having a sidewall, a floor attached to the sidewall, and a removable lid. The example biochar kiln also includes a plurality of semi-independent combustion cells. The example biochar kiln also includes an outside vent pipe loading to a center of the semi-independent combustion cells to provide combustion air.

A biochar kiln is disclosed. An example of the biochar kiln includes a kiln body having a sidewall, a floor attached to the sidewall, and a removable lid. The example biochar kiln also includes a plurality of semi-independent combustion cells. The example biochar kiln also includes an outside vent pipe loading to a center of the semi-independent combustion cells to provide combustion air.

The present disclosure provides methods and systems for modulating a solid-fuel-based combustion process. A current instantaneous heat release for a solid-fuel-based heat generator is determined at a virtual sensor. The current instantaneous heat release is compared to a current firing rate demand. When the current instantaneous heat release does not correspond to the current firing rate demand, an underfire air flow of the heat generator is adjusted.

The present disclosure provides methods and systems for modulating a solid-fuel-based combustion process. A current instantaneous heat release for a solid-fuel-based heat generator is determined at a virtual sensor. The current instantaneous heat release is compared to a current firing rate demand. When the current instantaneous heat release does not correspond to the current firing rate demand, an underfire air flow of the heat generator is adjusted.

Air flow control systems for use in the combustion of solid fuel are provided. Such air flow control systems may be used in a combustion apparatus, such as a cook stove. The use of such air flow control systems in the combustion apparatus can efficiently combust solid fuels with low emission of particulate matter and harmful gases.

Disclosed is a stove that includes a dome-shaped fire grate comprising a center, a perimeter surrounding and spaced from the center, the center being higher than the perimeter; a plurality of radial stiffening ribs extending away from the perimeter and toward the center; at least one circumferential stiffening ring extending at least partially about the center; and a plurality of ventilation holes between the center and the perimeter.

The present disclosure provides methods and systems for modulating a solid-fuel-based combustion process. A current instantaneous heat release for a solid-fuel-based heat generator is determined at a virtual sensor. The current instantaneous heat release is compared to a current firing rate demand. When the current instantaneous heat release does not correspond to the current firing rate demand, an underfire air flow of the heat generator is adjusted.