Aspects of the invention are directed to condensate traps having a back portion and a front portion. The back portion includes a first passage enclosed between the first wall, a second wall, and a back wall. A first opening in the back portion connects the first wall and the second wall with a first float placed over the first opening and does not travel below the first opening and is prevented from leaving the first passage by a first constriction. The front portion of the condensate trap includes a second passage enclosed between the third wall and the fourth wall. A second opening connects the third wall and the fourth wall in the front portion and a second float is placed below the second opening such that it does not travel through the second opening and is prevented from falling below a predetermined level by a second constriction.

A fume exhaust assembly for a gas water heater. The fume exhaust assembly comprises a fume exhaust hood; the fume exhaust hood is provided with a fume exhaust pipe; the fume exhaust pipe and the fume exhaust hood are integrally formed. By means of integral formation, an assembly operation for the fume exhaust pipe and the fume exhaust hood is saved, an assembly procedure of a gas water heater product is simplified, and thus the production efficiency of the gas water heater product can be improved.

An apparatus for removing moisture from exhaust gas is disclosed. The apparatus includes an inner chamber including an inner exhaust port, configured to discharge the exhaust gas flowing along a chimney, and an outer chamber, surrounding the inner chamber and including an outer exhaust port configured to discharge the exhaust gas discharged from the inner exhaust port, wherein an exhaust path is defined between the inner chamber and the outer chamber such that the exhaust gas discharged from the inner exhaust port flows along the exhaust path and is discharged through the outer exhaust port.

Thermal treatment techniques for recycling are generally very clean but their byproducts include a fine ash that may become entrained in the exhaust air plume as smoke. We therefore disclose a materials recycling apparatus comprising a heat treatment chamber for processing the material at an elevated temperature, the chamber having a vent leading via a heat exchanger to a scrubber comprising a disrupted flow path, at least one spray nozzle directed towards the disrupted flow path, and a supply of liquid (ideally water with a little detergent) to the or each spray nozzle. In this way, the entrained ash can be efficiently removed from the air flow, allowing it to be vented, and the captured ash disposed of via a waste water outlet together with the ash washed from the chamber. The flow path can be disrupted by at least one baffle plate, ideally with the spray nozzle located ahead of the baffle plate(s). Thermal treatment techniques for recycling are generally very clean but their byproducts include a fine ash that may become entrained in the exhaust air plume as smoke. We therefore disclose a materials recycling apparatus comprising a heat treatment chamber for processing the material at an elevated temperature, the chamber having a vent leading via a heat exchanger to a scrubber comprising a disrupted flow path, at least one spray nozzle directed towards the disrupted flow path, and a supply of liquid (ideally water with a little detergent) to the or each spray nozzle. In this way, the entrained ash can be efficiently removed from the air flow, allowing it to be vented, and the captured ash disposed of via a waste water outlet together with the ash washed from the chamber. The flow path can be disrupted by at least one baffle plate, ideally with the spray nozzle located ahead of the baffle plate(s).

Certain exemplary embodiments can provide a system, machine, device, and/or manufacture that is configured for operably releasing condensate from a furnace combustion gas containment system without allowing a substantial quantity of drain air to enter the condensate producing system from a drain or a substantial quantity of combustion gas to flow through the system, machine, device, and/or manufacture.

A nonreturn valve for an exhaust pipe of a combustion device comprising including a tubular body, a floating body, a valve seat for the floating body disposed inside the tubular body, and a circumferential groove disposed radially inside the tubular body, wherein a radial inner circumferential wall portion is formed at least as a portion of a gas guide channel extending in the direction of the floating body and having a mouth circumferential edge. A tubular buoyancy body having the valve seat is disposed inside the circumferential groove and is formed to be movable in parallel to the radial inner circumferential wall portion between a buoyancy position in which the buoyancy body forms between itself and the mouth circumferential edge a circumferential passage gap connecting the circumferential groove to the gas guide channel and a blocking position closing the passage gap in an axial direction.

An exhaust portion is connected to a lower peripheral edge of a secondary heat exchanger case, has an exhaust vent configured to exhaust combustion gas which has passed through the secondary heat exchanger case, and has a bottom surface including a first face parallel to the lower peripheral edge. A drainage water discharge port is configured to discharge drainage water from the first face of the bottom surface. The drainage water discharge port is provided, to avoid a region overlapping with the secondary heat exchanger case from a point of view as seen in an up-down direction, in an exhaust path from the secondary heat exchanger case toward the exhaust vent.

Certain exemplary embodiments can provide a system, machine, device, and/or manufacture that is configured for operably releasing condensate from a furnace combustion gas containment system without allowing a substantial quantity of drain air to enter the condensate producing system from a drain or a substantial quantity of combustion gas to flow through the system, machine, device, and/or manufacture.

A power generation system includes: a power generation unit configured to discharge a flue gas; a housing configured to accommodate the power generation unit; a ventilator configured to ventilate the housing; a first gas channel through which a gas discharged from the ventilator flows; a second gas channel through which the flue gas from the power generation unit flows; a merging portion where the first gas channel and the second gas channel merge; a third gas channel through which the gases merged at the merging portion flow; a water trap unit connected to the first gas channel and including a water sealing structure; and a water discharge channel through which water in the water trap unit is discharged to an outside of the housing.

Aspects of the invention are directed to condensate traps having a back portion and a front portion. The back portion includes a first passage enclosed between the first wall, a second wall, and a back wall. A first opening in the back portion connects the first wall and the second wall with a first float placed over the first opening and does not travel below the first opening and is prevented from leaving the first passage by a first constriction. The front portion of the condensate trap includes a second passage enclosed between the third wall and the fourth wall. A second opening connects the third wall and the fourth wall in the front portion and a second float is placed below the second opening such that it does not travel through the second opening and is prevented from falling below a predetermined level by a second constriction.