The present disclosure teaches a cleanout opening for chimneys. The cleanout chimney is made of precast concrete, which is a corrosion-resistant material that could last for 50-100 years. The cleanout chimney comprises a door and a frame, wherein, the door and the frame are connected via a pair of arc-shaped slots curved toward the back of the door. The use of arc-shaped slots enables the door to be secured tightly in the frame and can be taken out easily by the user. The front face of the door includes two recessions with a gap in the middle, wherein the gap may function as a handle. Additionally, the arced, curving-toward-the-back shape of the door discourages ash, soot, and debris from accumulating on the inner surface of the door. Compared to a hinged door, the door can be fully removed from the frame, which also facilitates the chimney cleaning process.

The present disclosure teaches a cleanout opening for chimneys. The cleanout chimney is made of precast concrete, which is a corrosion-resistant material that could last for 50-100 years. The cleanout chimney comprises a door and a frame, wherein, the door and the frame are connected via a pair of arc-shaped slots curved toward the back of the door. The use of arc-shaped slots enables the door to be secured tightly in the frame and can be taken out easily by the user. The front face of the door includes two recessions with a gap in the middle, wherein the gap may function as a handle. Additionally, the arced, curving-toward-the-back shape of the door discourages ash, soot, and debris from accumulating on the inner surface of the door. Compared to a hinged door, the door can be fully removed from the frame, which also facilitates the chimney cleaning process.

An exhaust plume control structure includes a mounting member configured to mount to an exhaust flow source. A diverter member is coupled to the mounting member to radially direct an initial exhaust flow exiting from the exhaust flow source radially outward. A plurality of peripherally spaced, radially extending vanes are coupled to the mounting member and radially outward of the diverter member to separate the radially outward directed initial exhaust flow into a plurality of additional exhaust flows. Each vane has a radially diverging cross-section. Each of the plurality of additional exhaust flows has a same radial exit velocity. The structure reduces exhaust flow velocity and may provide back pressure to the initial exhaust flow. The structure has a sound power level of less than 115 dBA. A power generating plant including the structure is also disclosed.

An exhaust plume control structure includes a mounting member configured to mount to an exhaust flow source. A diverter member is coupled to the mounting member to radially direct an initial exhaust flow exiting from the exhaust flow source radially outward. A plurality of peripherally spaced, radially extending vanes are coupled to the mounting member and radially outward of the diverter member to separate the radially outward directed initial exhaust flow into a plurality of additional exhaust flows. Each vane has a radially diverging cross-section. Each of the plurality of additional exhaust flows has a same radial exit velocity. The structure reduces exhaust flow velocity and may provide back pressure to the initial exhaust flow. The structure has a sound power level of less than 115 dBA. A power generating plant including the structure is also disclosed.

A vent damper for a fireplace system includes a support framework couplable with a flue pipe, and a flexible damper layer disposed on the support framework. The flexible damper layer assumes an open configuration in a presence of fluid flow from the flue pipe and a closed configuration in an absence of the airflow from the flue pipe. The damper layer is high temperature resistant.

A vent damper for a fireplace system includes a support framework couplable with a flue pipe, and a flexible damper layer disposed on the support framework. The flexible damper layer assumes an open configuration in a presence of fluid flow from the flue pipe and a closed configuration in an absence of the airflow from the flue pipe. The damper layer is high temperature resistant.

A chimney damper assembly for allowing a user to control when the damper is closed or open includes a frame mounting to a top of a chimney. The frame is hollow, and a flange extends upwardly the frame. A panel is attached to the frame by a hinge and is pivotally positionable from an open position to a closed position. A loop connector is attached the panel, and a seal is attached to the frame to inhibit ventilation when the panel is in the closed position. A pulley includes a grooved wheel rotatably coupled to the flange. A tether is positioned upon the grooved wheel and is elongated from a first end to a second end. The first end of the tether is attached to the loop connector the panel, and the second end of the tether is pulled by a user to lift the panel into the open position.

A chimney damper assembly for allowing a user to control when the damper is closed or open includes a frame mounting to a top of a chimney. The frame is hollow, and a flange extends upwardly the frame. A panel is attached to the frame by a hinge and is pivotally positionable from an open position to a closed position. A loop connector is attached the panel, and a seal is attached to the frame to inhibit ventilation when the panel is in the closed position. A pulley includes a grooved wheel rotatably coupled to the flange. A tether is positioned upon the grooved wheel and is elongated from a first end to a second end. The first end of the tether is attached to the loop connector the panel, and the second end of the tether is pulled by a user to lift the panel into the open position.

An adjustable chimney shroud and method for installation. The shroud includes a housing with at least one adjustable side. The adjustable side comprises a first panel with an outer telescoping portion that slidably receives an inner telescoping portion of a second panel. This allows the length of the side to be varied to fit a chimney chase of a particular size. The side length can then be fixed using fasteners. The method involves adjusting the shroud to the desired size, fixing the dimensions, and placing it on the chimney. The shroud can be provided in various configurations, including rectangular and cylindrical shapes.

An adjustable chimney shroud and method for installation. The shroud includes a housing with at least one adjustable side. The adjustable side comprises a first panel with an outer telescoping portion that slidably receives an inner telescoping portion of a second panel. This allows the length of the side to be varied to fit a chimney chase of a particular size. The side length can then be fixed using fasteners. The method involves adjusting the shroud to the desired size, fixing the dimensions, and placing it on the chimney. The shroud can be provided in various configurations, including rectangular and cylindrical shapes.