A boiler is provided that is configured for use with an indirect water heater and a hydronic space heating system. When a heat source is firing at a predetermined firing rate, the boiler compares the firing rate to a predetermined firing rate and controls the water flow based on a simultaneous heat demand from the hydronic space heating system and the indirect water heater based on a result of the comparing the firing rate to the predetermined firing rate. A boiler is also provided with a carbon dioxide gas sensor that detects a value of carbon dioxide. When the value of carbon dioxide exceeds a selected value of carbon dioxide, the boiler reduces the predetermined firing rate. A kit for a boiler assembly and a method for assembling a stand to a boiler are also provided.
A water heater system including a boiler having a heat exchanger and an indirect water heater having a heat exchanger, and a controller configured to activate a pump such that the water flows between the boiler heat exchanger and the indirect water heater heat exchanger, and to control a heat source to provide heat to the boiler at a firing rate. The water heater system measuring temperatures of the water at the boiler water inlet and at the boiler water outlet, calculating an amount of heat transfer from the boiler heat exchanger to the indirect water heater exchanger based on the measured temperatures, and adjusting the firing rate based on the calculated amount of heat transfer to determine a heat transfer capacity of the indirect water heater exchanger.
A water heating system configured to activate a pump such that the water flows between a boiler and a hydronic heating system. When a heat source is firing at a preexisting firing rate, the system maintains firing the heat source at the preexisting firing rate for a time period, and measures temperatures of water at a boiler water inlet and at a boiler water outlet. When the heat source is not firing, the system prevents firing the heat source for a time period, and measures temperatures of water at the boiler water inlet and at the boiler water outlet. The system calculates temperature differences between the measured temperatures at different times during the time period, and controls the heat source to provide heat to the boiler heat exchanger at a firing rate determined based on a comparison between the temperature differences.
F24D 3/08 - Hot-water central heating systems in combination with systems for domestic hot-water supply
F24D 19/10 - Arrangement or mounting of control or safety devices
F24H 1/50 - Water heaters for central heating incorporating heaters for domestic water incorporating domestic water tanks
F24H 15/175 - Supplying heated water with desired temperature or desired range of temperature where the difference between the measured temperature and a set temperature is kept under a predetermined value
F24H 15/215 - Temperature of the water before heating
F24H 15/219 - Temperature of the water after heating
F24H 15/355 - Control of heat-generating means in heaters
F24H 15/36 - Control of heat-generating means in heaters of burners
G05D 23/19 - Control of temperature characterised by the use of electric means
Aspects of the invention provide a heat exchanger that includes a shell coupled to a top tube sheet and a bottom tube sheet. The shell at least partially defines an interior region. The heat exchanger also includes a burner positioned to deliver combustion gases into the interior region. A plurality of tubes, configured to circulate a fluid therein, extend through the interior region around the burner. The heat exchanger further includes a divider that extends within the interior region from the top tube sheet to the bottom tube sheet and between one of the plurality of tubes and another non-adjacent tube of the plurality of tubes. The divider and the plurality of tubes define a receiving section of the interior region for receiving combustion gases from the burner and an exhaust section of the interior region in fluid communication with a combustion gas vent.
F24H 1/40 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL Details
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
Aspects of the invention provide a heat exchanger that includes a shell coupled to a top tube sheet and a bottom tube sheet. The shell at least partially defines an interior region. The heat exchanger also includes a burner positioned to deliver combustion gases into the interior region. A plurality of tubes, configured to circulate a fluid therein, extend through the interior region around the burner. The heat exchanger further includes a divider that extends within the interior region from the top tube sheet to the bottom tube sheet and between one of the plurality of tubes and another non-adjacent tube of the plurality of tubes. The divider and the plurality of tubes define a receiving section of the interior region for receiving combustion gases from the burner and an exhaust section of the interior region in fluid communication with a combustion gas vent.
F24H 1/14 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
F24H 1/40 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
F24H 1/12 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
Aspects of the invention provide a heat exchanger including a shell at least partially defining an interior region; a burner positioned to deliver combustion gases into the interior region; and a plurality of tubes configured to circulate water therein, the plurality of tubes extending through the interior region. The plurality of tubes further including an inner set of tubes and an outer set of tubes, the inner set of tubes being closer to the burner than the outer set of tubes. The inner set of tubes and the outer set of tubes being positioned adjacent to one another such that the outer set of tubes is staggered from the inner set of tubes and tubes of the outer set of tubes are adjacent to tubes of the inner set of tubes. Additionally, baffle segments are annularly positioned in the interior region adjacent the plurality of tubes. Adjacent baffle segments defining gaps for the flow of the combustion gases.
F24H 1/28 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
F22B 9/02 - Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed upright, e.g. above the combustion chamber
F22B 9/04 - Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed upright, e.g. above the combustion chamber the fire tubes being in upright arrangement
F22B 33/08 - Combinations of boilers having a single combustion apparatus in common of boilers of water-tube type with boilers of fire-tube type
Disclosed is a heat exchanger that has an internal air flow pattern such as a helical pattern. The heat exchanger includes a shell that encompasses an inner series of heat exchange tubes and an outer series of heat exchange tubes. A baffle sheet is juxtaposed next to the outer series of heat exchange tubes. And the baffle sheet is configured to direct air flow within the heat exchanger in a configuration, such as a helical configuration, from a center of the shell toward an outer region of the shell.
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
F28F 9/22 - Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
F28F 1/20 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being attachable to the element
F24H 1/40 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL Details
F24H 1/00 - Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
A high efficiency compact boiler is disclosed which includes a burner configured to introduce combustion gases into an interior region of the boiler, a heat exchange tube made of a length of finned tubing in the form of a helical coil positioned within the interior region of the boiler such that combustion gases from the burner can flow from a region inside the helical coil to a region outside the helical coil, and a floating baffle configured to redirect the flow of combustion gases around the finned tubing as it passes from the region inside the helical coil to the region outside the helical coil, the baffle being positioned proximal adjacent turns of the helical coil and having a coiled configuration corresponding substantially to the helical coil.
F24H 1/16 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
F24H 1/43 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
B23P 15/26 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers
9.
HEAT EXCHANGER HAVING ARCUATELY AND LINEARLY ARRANGED HEAT EXCHANGE TUBES
Disclosed is a heat exchanger that has an internal air flow pattern such as a helical pattern. The heat exchanger includes a shell that encompasses an inner series of heat exchange tubes and an outer series of heat exchange tubes. A baffle sheet is juxtaposed next to the outer series of heat exchange tubes. And the baffle sheet is configured to direct air flow within the heat exchanger in a configuration, such as a helical configuration, from a center of the shell toward an outer region of the shell.
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
Disclosed is a heat exchanger having an economizer configured as a ring of tubes in a periphery of the heat exchanger. The heat exchanger includes a cylindrical flue collector and a manifold at either end of the cylindrical flue collector. The manifold has a plurality of chambers. The manifold can be made of steel or plastic and governs fluid flow rate and direction within a ring of tubes. At least two rings of heat exchanging tubes, an outer ring and an inner ring, are within the cylindrical flue collector. The rings of tubes are concentric with respect to each other.
A high efficiency compact boiler is disclosed which includes a burner configured to introduce combustion gases into an interior region of the boiler, a heat exchange tube made of a length of finned tubing in the form of a helical coil positioned within the interior region of the boiler such that combustion gases from the burner can flow from a region inside the helical coil to a region outside the helical coil, and a floating baffle configured to redirect the flow of combustion gases around the finned tubing as it passes from the region inside the helical coil to the region outside the helical coil, the baffle being positioned proximal adjacent turns of the helical coil and having a coiled configuration corresponding substantially to the helical coil.
A boiler or water heating system (10) includes a coiled heat exchange tube (18) having a major diameter and a minor diameter and a gap defined between adjacent turns of the tube (18), the tube (18) also having a non-circular cross-section with a dimension along a major axis (J) that is larger than a dimension along a minor axis (N), the major axis (J) of the non-circular cross-section of the heat exchange tube (18) being non-perpendicular to a coil axis (22) of the heat exchange tube (18) thereby providing a surface of the tube (18) extending between the major and minor diameters of the heat exchange tube ( 18) that promotes the gravitational migration of condensate along the surface of the heat exchange tube (18) and through the gap defined between adjacent turns of the heat exchange tube (18) in a direction toward or away from the coil axis (22).
patents
