4results about "Flue gas duct system" patented technology

A double-walled flue or chimney system (1) comprises a plurality of elements (2) which can be coupled to each other to form a flue or chimney; each element (2) extends along an axis (A) between two longitudinal ends (3, 4) and comprises an inner tube (5) and an outer tube (6), radially spaced apart and separated by an air gap (7); the inner tube (5) and the outer tube (6) have, at respective axially opposite ends, respective radially enlarged female portions (11, 12) defining connection cups, and respective male portions (13, 14), axially opposite the female portions (11, 12) and insertable in respective female portions (11, 12) of another element of the system; the inner tube (5) and the outer tube (6) are both made of polymeric material, in particular polypropylene (PP) ; the female portions (11, 12) of the inner tube (5) and the outer tube (6) are both located at the same longitudinal end (3) of the element (2). Each element comprises a locking ring (30) for axially and radially positioning the inner tube relative to the outer tube. The locking ring is fluidly air tight in order to create insulating compartment when the elements are connected.

The invention relates to an air supply and flue gas exhaust device for closed-type gas fires (4), comprising a pipe system (1) comprising at least an inner first pipe (2) for flue gas exhaust and an outer second pipe (3) for air supply, wherein the pipe system (1) on the one hand ends in one or more coupling ends (5) for coupling with said gas fires (4) and on the other hand ends in one flue end (6), wherein, in use of the device, a fan (7) for forced discharge of flue gas from the first pipe (2) is placed on said flue end (6). The invention further relates to a method for air supply to and flue gas exhaust from one or more closed-type gas fires (4) in a building, in particular in an apartment building. In addition, the invention relates to a system comprising one or more closed-type gas fires (4) and a device for air supply and flue gas exhaust, a kit and specific uses.

Processes and apparatuses for heating process fluid in a furnace. Fuel to the furnace is either hydrocarbons or hydrogen. The fuels may be sent to different furnaces or be sent at different times to the same furnace. Furnaces that are configured to receive both types of fuels may have different exhaust paths. An exhaust path for hydrocarbon fuel flue gas includes a carbon capture process zone.

Processes and apparatuses for heating process fluid in a furnace. Fuel to the furnace is either hydrocarbons or hydrogen. The fuels may be sent to different furnaces or be sent at different times to the same furnace. Furnaces that are configured to receive both types of fuels may have different exhaust paths. An exhaust path for hydrocarbon fuel flue gas includes a carbon capture process zone.