This invention provides a portable combustion device that provides a cleaner combustion, provides a more efficient overall combustion through the use of a fan that directs a predetermined volume of airflow over the combustible fuel—typically wood or similar cellulose-based biological solids and provides a cooking surface that is a grill top. The combustion device has a combustion chamber into which the fuel source is placed for combustion. Mounted to the side of the combustion chamber is a housing that encloses the TEG, which generates an electrical output, based on a difference in temperature on opposing sides. Mounted onto the TEG housing and protruding into the combustion chamber through a small passageway is a heat-conducting probe and heat-conducting probe base unit.

A combustion powered electricity generating assembly for grilling and generating electricity includes a grill housing, which defines an interior space. A front opening positioned in a front face of the grill housing allows for positioning of combustible materials into the interior space. A front door is hingedly engaged to the grill housing and is positioned to selectively close the front opening. A thermoelectric generator engaged to a back face of the housing generates an electrical current due to a temperature differential between the grill housing and the ambient environment. A power storage module is operationally engaged to the thermoelectric generator so that the power storage module is charged by the electrical current. The power storage module can be engaged an electrical device to power the electrical device.

A combustion powered electricity generating assembly for grilling and generating electricity includes a grill housing, which defines an interior space. A front opening positioned in a front face of the grill housing allows for positioning of combustible materials into the interior space. A front door is hingedly engaged to the grill housing and is positioned to selectively close the front opening. A thermoelectric generator engaged to a back face of the housing generates an electrical current due to a temperature differential between the grill housing and the ambient environment. A power storage module is operationally engaged to the thermoelectric generator so that the power storage module is charged by the electrical current. The power storage module can be engaged an electrical device to power the electrical device.

The invention relates to a solid-fuel combustion device, comprising a fuel reservoir for a solid fuel in the form of fuel pieces and a combustion chamber having at least one first opening for the feeding of air and having at least one second opening for the escape of heat and exhaust gases produced when the solid fuel is burned. During proper use, the fuel reservoir is arranged in such a way that the fuel pieces can enter the combustion chamber under the force gravity and can burn there. The fuel reservoir is closed air-tight at least in such a way that no or at least no significant burning can occur in the fuel reservoir during proper use. During proper use, the first opening is arranged below the combustion chamber and the second opening is arranged to the side of the combustion chamber.

The invention relates to a solid-fuel combustion device, comprising a fuel reservoir for a solid fuel in the form of fuel pieces and a combustion chamber having at least one first opening for the feeding of air and having at least one second opening for the escape of heat and exhaust gases produced when the solid fuel is burned. During proper use, the fuel reservoir is arranged in such a way that the fuel pieces can enter the combustion chamber under the force gravity and can burn there. The fuel reservoir is closed air-tight at least in such a way that no or at least no significant burning can occur in the fuel reservoir during proper use. During proper use, the first opening is arranged below the combustion chamber and the second opening is arranged to the side of the combustion chamber.

Polygeneration plant, fueled with biomass from various sources and with rated power included between 30 kW and 200 kW, including a plurality of specialised modules, the modules being at least one first module for loading and drying the biomass; at least one second gasification module suitable for producing the syngas starting from the biomass; at least one third module for automating and controlling the polygeneration process associated to the plant. The polygeneration plant includes at least one fourth module including at least one fuel cell, the fuel cell being of the SOFC or MCFC, PEMFC, PAFC, AFC type.

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.

A stove includes a combustion chamber, a fuel grate positioned within the combustion chamber, and a pellet adapter removably positionable on the fuel grate. The fuel grate includes a number of first ventilation holes. The pellet adapter includes a number of second ventilation holes sized and shaped to prevent passage of a fuel pellet. The pellet adapter also includes a raised outer rim and a central protuberance with a height greater than the height of the raised outer rim.

A stove includes a combustion chamber, a fuel grate positioned within the combustion chamber, and a pellet adapter removably positionable on the fuel grate. The fuel grate includes a number of first ventilation holes. The pellet adapter includes a number of second ventilation holes sized and shaped to prevent passage of a fuel pellet. The pellet adapter also includes a raised outer rim and a central protuberance with a height greater than the height of the raised outer rim.

A portable base and grill assembly with few parts, that is collapsible, robust, and easily portable and storable is provided. The base includes two parts: a collapsible frame for containing combustion and an insert for holding combustible material including wood and charcoal. The portable grill includes two parts: a collapsible stand and a cooking surface. The cooking surface is a mil-able grill that can support cookware or be used to cook food directly. The height of the stand may be adjusted to raise or lower the cooking surface above a heat source. The portable base, portable grill and cooking surface may each be used as a standalone apparatus or combined and used together as in the assembly. The base and grill assembly may be constructed wholly of stainless steel for durability.