A storage boiler, a tank of which has a first chamber for housing a given quantity of water; an inlet for feeding water into the first chamber; an outlet for discharging water from the tank; and a first resistor fitted inside the first chamber to heat the water inside the first chamber to, and keep it at, a standby first temperature; the first chamber housing a tubular body, which houses a second chamber communicating with the first chamber and with the outlet, and housing a second resistor selectively activatable to heat the water flowing through the second chamber to a dispensing second temperature higher than the first temperature.

A storage boiler, a tank of which has a first chamber for housing a given quantity of water; an inlet for feeding water into the first chamber; an outlet for discharging water from the tank; and a first resistor fitted inside the first chamber to heat the water inside the first chamber to, and keep it at, a standby first temperature; the first chamber housing a tubular body, which houses a second chamber communicating with the first chamber and with the outlet, and housing a second resistor selectively activatable to heat the water flowing through the second chamber to a dispensing second temperature higher than the first temperature.

A plasma heating apparatus including a boiler vessel for holding water to be heated, a cathode housed in the vessel, the cathode defining a watertight cathode chamber isolated from the water in the vessel, and, an anode housed in the cathode chamber, the anode including an internal passage for receiving a gas from outside of the vessel when the passage is connected to a gas supply, and wherein the anode is connectable to a power source for receiving power for generating a plasma in the cathode chamber. In another aspect, the present disclosure relates to a heat or power generating system or plant including the plasma heating apparatus.

A water heating apparatus includes a fluid inlet conduit configured to split into a plurality of supply legs, and a plurality of heat exchangers configured for parallel operation. Each heat exchanger includes an outer housing, an inlet connected to a respective supply leg of the fluid inlet conduit for receiving an inlet flow of liquid into the outer housing, an outlet for allowing an outlet flow of liquid to leave the outer housing, and a heat exchange element positioned within the outer housing and configured to heat a flow of liquid passing through the outer housing from the inlet to the outlet. The water heating apparatus further includes a burner assembly comprising a combustion chamber housing and a burner positioned internally within the combustion chamber housing. The burner assembly is coupled to the plurality of heat exchangers for supplying heat to the flow of liquid.

A water heating apparatus includes a fluid inlet conduit configured to split into a plurality of supply legs, and a plurality of heat exchangers configured for parallel operation. Each heat exchanger includes an outer housing, an inlet connected to a respective supply leg of the fluid inlet conduit for receiving an inlet flow of liquid into the outer housing, an outlet for allowing an outlet flow of liquid to leave the outer housing, and a heat exchange element positioned within the outer housing and configured to heat a flow of liquid passing through the outer housing from the inlet to the outlet. The water heating apparatus further includes a burner assembly comprising a combustion chamber housing and a burner positioned internally within the combustion chamber housing. The burner assembly is coupled to the plurality of heat exchangers for supplying heat to the flow of liquid.

Heat pump configurations that provide continuous heat transfer capabilities without any need for electricity. The overall system includes a rotatable hourglass structure situated within a sphere or ovoid container with internal tracks aligned with wheels on the hourglass. With a heat collection component situated on the underside of the container, the rotatable hourglass, being constructed of suitable heat transfer materials, absorb the collected heat in the lower portion of the container, thereby causing the air present therein to expand, forcing a plunger upward from one hourglass chamber to the other. The plunger effectuates operation of a magnetic switch to release the hourglass to rotate and then oscillate from one position to another until the heat collection operation discontinues. With a coolant introduced within the heated chamber (and drawn through pressure differential), heat can be transferred thereto. The heated coolant is then transferred to a reservoir for future utilization.

This invention relates primarily to an electric heater based tankless water heater, though some aspects may also apply to a natural gas or other fuel based tankless water heater. In particular aspects relating to smart communication and coordination of the tankless water heater with other devices, which may be electrically powered or powered by other fuels, may also apply to non-electric flow through fluid heating systems. The subject tankless water heater invention incorporates several aspects relating to energy and construction efficiency which will be detailed further. These include both physical aspects, such as coatings, tubing and heater element design, and electrical aspects, such as power control for individual heater elements, which can make the tankless water heater more compact and more efficient in operation, with reduced instantaneous and long term load on electrical supply systems.

A water heating pod includes at least one water heating module packaged within a container. The water heating module includes a plurality of water heating units in fluid communication with a basin. The basin is configured to support a first fluid communication between the water heating units and provide a second fluid isolation between the water heating units.

A water heating pod includes at least one water heating module packaged within a container. The water heating module includes a plurality of water heating units in fluid communication with a basin. The basin is configured to support a first fluid communication between the water heating units and provide a second fluid isolation between the water heating units.

The present invention provides a boiler system, for example for use in heating a domestic hot water supply, and which is significantly more fuel efficient than existing boilers, the boiler system comprising a first reservoir and a second reservoir which together defme a combustion enclosure, a storage tank positioned to defme an upper wall or roof of the enclosure and being in fluid communication with the first water reservoir, a heat exchange tube located in the storage tank and being in fluid communication with the second water reservoir; and a burner arranged to directly heat atmospheric gases within the enclosure in order to indirectly heat the walls of the enclosure.