The disclosed technology includes an on-demand water heater which uses a heat pump to heat the fluid. The on-demand heat pump water heater can have a low fluid capacity heating chamber which has an inlet and an outlet, a heat pump for heating the fluid, and a controller to control the heat pump and maintain the temperature of the fluid at a predetermined temperature. The on-demand heat pump water heater can include one or more temperature sensors, flow sensors, fluid mixing valves, or supplemental heat sources.

The invention relates to a compensation assembly for use in a hot water device and an associated hot water device. The hot water device includes a water tank for holding water to be heated, and the compensation assembly includes a compensation vessel and a ventilation component that allows air to be exchanged between the compensation vessel and the atmosphere. The ventilation component includes a blocking element designed to prevent water from leaking from the compensation vessel via the ventilation component.

An expansion assembly for use in a hot water device, having a water container for receiving water to be heated, includes an expansion tank with a lower expansion tank half shell and an upper expansion tank half shell. The lower expansion tank half shell has a coupling portion for coupling to the water container of the hot water device. The upper expansion tank half shell is configured to be coupled to a cold water feed line. The upper expansion tank half shell and the lower expansion tank half shell are hermetically connected at circumferential edges forming the expansion tank.

Provided is a method of controlling a supply of heated water from a source including a heating appliance (301) to a plurality of water outlets (302, 303) remote from the heating appliance, the method comprising: detecting a demand for water from a first water outlet (302), identifying the demand as likely to be associated with the first water outlet (302) and setting to a first target water temperature value, associated with the first outlet, a target water temperature for the temperature at which water is supplied; detecting a demand for water from a second water outlet (303), identifying the demand as likely to be associated with the second water outlet, and resetting to a second target water temperature value, associated with the second outlet, the target water temperature at which water is supplied; wherein the demand is associated with an outlet based on a detected flow characteristic. Also provided is a hot-water supply installation having a plurality of controllable outlets, the installation including: a source of hot-water with an outlet having a controllable outflow temperature; a flow measurement device to provide data on water flow between the source and the plurality of controllable outlets; a temperature sensor to detect the outflow temperature; a memory storing parameters linking flow data to outlet identity, and associating each of the plurality of controllable outlets with a respective target temperature; a processor operatively connected to the memory, the flow measurement device, and the first temperature sensor; the processor being configured: in the event that one of the plurality of controllable outlets is opened, to determine based on a detected flow characteristic which of the plurality of controllable outlets has been opened, and then based on that determination to control the outflow temperature of the source, in accordance with stored parameters for the determined one of the controllable outlets; and in the event that another of the plurality of controllable outlets is opened, to determine which another of the plurality of controllable outlets has been opened, and then based on that determination to control the outflow temperature of the source, in accordance with stored parameters for the determined another of the controllable outlets.

A faucet assembly comprises: a water supply pipeline comprising a water outlet pipeline section and a water inlet pipeline section connected to each other, wherein the water inlet pipeline section contains a throat section with smaller cross sectional diameter; a shell made of hard materials and wrapped around the throat section, so as to define a closed space that contains air around the throat section, while the throat section has an opening to the closed space; a flexible membrane wrapping layer made of elastic materials and is hermetically sealed on the inner side of the shell, so that the closed space that contains air has an elastic, retractable and sealed boundary; a heater connected in series to the inlet pipeline section and is positioned in the upstream of the shell along the water outlet direction, to heat the water that is about to flow into the throat section.

A water heating assembly, related kit, use and method make use of a temperature control near a point of use of water, so as to reduce a time response for hot water at this point of use are provided. The water heating assembly includes a tank for containing water, an inlet temperature sensor for sensing an inlet temperature of the water upstream of the tank, and a valve located upstream of the tank. The valve is actuated when the sensed inlet temperature reaches a given temperature set-point such that the water is bypassed from the tank and directly sent to the point of use. The water heating assembly is configured such that the point of use can be fed with water at the desired temperature in a reduced time, the water coming directly from the hot water source and/or the water heating assembly, thereby saving water, energy and time.

Provided is a crypto currency mining system capable of producing hot water, which includes a cooling system for cooling heat generated when a crypto current is mined and includes a hot water producing device for generating hot water by using the heat of cooling water, which passed through the cooling system, to reduce management and maintenance costs by recycling energy consumed when the crypto currency is mined, and improve productivity. The crypto currency mining system capable of producing hot water includes a calculation device for mining a crypto currency; a power supply device configured to supply electric power for an operation of the calculation device; a cooling system configured to cool heat generated by the calculation device or the power supply device through exchange of heat; and a hot water producing device configured to produce hot water by using the heat discharged from the cooling system.

A hot water heater appliance includes a boiler, a companion water heater and a controller. The controller is configured to control the water heater appliance in response to a scheduled plurality of performance modes based on a preset schedule. A first performance mode is scheduled to be performed at an expected low usage time and a second performance mode is scheduled to be performed at an expected high usage time relative to the expected low usage time.

The concepts relate to reducing energy loss associated with hot water systems. One example can monitor hot water use in a system. Upon completion of the hot water use, the example can recover some of the hot water from hot water lines into a water heater that heated the hot water. The method can also deliver the recovered hot water to the water heater in a manner that affects operation of a heating element of the water heater.

The present invention relates to the field of refrigeration and heating technologies, and in particular to a mobile type cold and hot integrated apparatus realized by a compressor, a thick film heater and a water circulation way in a single sealed space without heat exchange of an outdoor machine. The apparatus comprises a shell body, as well as a water circulation cooling compressor refrigeration system and a water circulation thick film heating pipe heating system which are provided in the shell body; wherein the water circulation cooling compressor refrigeration system comprises a refrigeration heat-dissipation module, a water pump A, a water tank, a compressor and a heat-dissipation water tank, the water circulation thick film heating pipe heating system comprises a thick film heating pipe, as well as the water tank and the refrigeration heat-dissipation module which are shared with the water circulation cooling compressor refrigeration system. The apparatus of the present invention has the advantages of good refrigeration heating effect, integrated heat and coldness, customized volume, no need of installation of an outdoor machine, environmental protection and energy saving, plug and play and movable functions, no influence on the environment, comfort for a human body, small energy consumption, and indoor heat storage for life use.