A thermostatic device for a pipeline of a sanitary water supply or dispensing system and including a temperature meter which detects the temperature of the sanitary water entering the thermostatic device, a flow regulator which regulates a rate of sanitary water exiting from the device, and a control unit. The flow regulator operates in a first operating mode and a second operating mode. The first operating mode is a steady-state operating mode. The second operating mode is a steady-state setting operating mode in which the flow rate of sanitary water leaving the thermostatic device is a minimum flow rate. The control unit is configured to acquire, receive and/or calculate a reference temperature and arrange the switching of the operating mode when the temperature meter detects a temperature of the sanitary water greater than the reference temperature.

An adaptor for adapting a solar electric generator and solar heater to a thermal storage device, the adaptor including a first port, a second port, a third port, a fourth port and a pump configured for receiving a fluid through the third port and pulling the fluid through the third port from a thermal storage device to the fourth port, wherein the first port and the fourth port are configured to be supplied on a first surface and the second port and third port are configured to be supplied on a second surface.

A method of managing a combi radiator (1), the method comprising the following steps that are repeated for each current day, and for each current period taken from a predetermined set constituted by at least one successive period defined in the current day:

acquiring a predetermined indication from a predefined table (30), said predetermined indication being associated with said current period and being taken from a list comprising a first indication for which only the electrical radiator system (2) is to be activated, and/or a second indication for which only the hot-water radiator system (3) is to be activated, and/or a third indication for which both the electrical radiator system and the hot-water radiator system are to be activated;

controlling the radiator as a function of the predetermined indication.

Smart hot water heater control can be improved by departing from the conventional approach of monitoring hot water demand at a single point (i.e., the water heater output). Instead, hot water demand is monitored at each location in the building where hot water is used. With this approach, the controller can provide hot water at a temperature suitable for the intended use, e.g., warm water for a bath or shower, and much hotter water for a dishwasher. This advantageously avoids inefficiency due to mixing hot and cold water at a tap to provide temperature control.

Hot water heating system comprising one or more water heaters with at least one water heating mechanism, and a heating-control storage tank generally configured to store heated water in a temperature stratified manner where hotter water tends to be separated from cold water. The heating-control storage tank can receive thermal energy or hot water from the water heater, send thermal energy or water to the water heater as its makeup water, and provide hot water directly to end users. The water heater may or may not be used to provide hot water to end users. The system is electronically controlled using a processor, various sensors, a recirculation pump, and electronically actuated valves. Depending on hot water needs and energy costs, the system controls water heating schedule and amount of hot water stored in the heating-control storage tank by changing system operation modes to minimize energy costs while providing reliable service.

The present disclosure relates to modulating energy consumption by a water provision system installed in a building, including one or more electrical heating elements operable to heat water, a heat pump configured to transfer thermal energy from outside the building to a thermal energy storage medium inside the building and a control module configured to control operation of the water provision system, the water provision system being configured to provide water heated by the one or more electrical heating elements and/or the thermal energy storage medium to one or more water outlets, This can include: determining a level of energy demands of a geographical region comprising the building; and upon determining that the level of energy demands is high, controlling the water provision system to switch from using the one or more electrical heating elements to the thermal energy storage medium for provision of heated water.

Model predictive control methods are disclosed which provide, among other things, efficient strategies for controlling heat-transfer to a fluid.

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.

In a control device, an instruction acquirer acquires an instruction to suppress in a specified period supplying of generated power generated by power generator installed in a power-consuming area to a commercial electrical power system. Upon the instruction acquirer acquiring the instruction, a water heater controller commands a water heater installed in the power-consuming area to perform a water heat-up operation when a predetermined condition is satisfied in the specified period.

A method of measuring the amount of energy consumed from a water heater having a tank with two or more temperature sensors located a predetermined heights on or in the tank, the method including the step of; for each sensor, determining a corresponding volume of a segment of the tank, measuring the change of temperature at each temperature sensor, calculating the energy for the corresponding volume for each sensor, and summing the energy changes for all the sensors to determine the amount of energy consumed. The energy usage can be recorded with chronological information to construct a usage pattern which can be used for controlling the heater and for providing the user with details of energy usage. The system does not require the use of data derived from a flow meter.