A heat pump hot-water supply system includes a heat pump hot-water supply device, an electricity storage device, and a control device. The control device determines an operating time zone of the heat pump hot-water supply device based on power conversion efficiency of the electricity storage device, coefficients of performance of the heat pump hot-water supply device of a current day and a next day, and an electricity rate structure of a commercial power system.

A method for controlling a distribution temperature of domestic hot water implemented in a management unit of an installation for producing domestic hot water and including steps for obtaining mean temperatures of the distributed hot water, determined by time ranges and measured by one or more divisional distribution meters in the course of a reference period; obtaining a minimum value and a maximum value of these temperature averages in order to determine a temperature condition of the distributed hot water from at least the maximum value or the minimum value, and from at least one predefined temperature threshold, and, if the distribution condition determined is met, sending a sequence controlling the production temperature to the production installation. Also, a distribution installation, a distribution meter and a unit for managing the distribution of domestic hot water.

A computer-implemented method monitors and/or controls domestic hot water production and/or distribution. The method includes detecting at least two real temperatures of a fluid stored in a heat storage tank at two different positions along a height of the heat storage tank at least at points in time, and acquiring a temperature distribution pattern of heat stored in the heat storage tank and/or corresponding heat distribution pattern data by applying a temperature-distribution-pattern-algorithm to the detected real temperatures detected at the points in time. The fluid is sanitary hot water, and the heat storage tank is a pressurized tank. A computer may carry out the method. The computer may be part of a system. A computer program may include instructions to cause the controller of to execute the method. The computer program may be stored on a computer-readable medium.

A thermal storage system includes: a water heater; memory circuitry; acquiring circuitry configured to acquire information regarding weather forecast for a target date for which an operation schedule for the water heater is arranged and a region where the water heater has been installed; supply capacity forecast circuitry configured to determine an hourly delivery capacity of the water heater on the target date on the basis of the information regarding weather forecast; demand forecast circuitry configured to forecast hourly consumption of hot water on the target date on the basis of data stored in the memory circuitry and indicating past change in consumption of hot water; and planning circuitry configured to determine the operation schedule that avoids shortage of hot water supply on the basis of the hourly delivery capacity and the hourly consumption of hot water.

Method to operate a hot water storage device (10) comprising a tank (11), a heating unit (15), at least one temperature sensor (19, 20), and a controller (21) to control the heating unit (15). The method comprises the following steps: Determine from a water temperature measurement signal provided by the at least one temperature sensor (19, 20) a water usage profile, said water usage profile providing for defined time intervals of a day and/or for defined days of a week a nominal temperature and a nominal volume of the heated water to be stored within the tank. Operate the heating unit (15) in such a manner that for each defined time interval of a day and/or for each defined day of a week the actual temperature and the actual volume of the heated water stored withing the tank corresponds automatically to the respective nominal value of the water usage profile.

An electronic device comprises at least a first command for selecting a supply of an outlet of a faucet with water from at least an inlet of said faucet, a data processing unit operatively associated to said first command, and a memory operatively accessible from said data processing unit. Said electronic device configured for activation in at least a self-learning operating configuration in which, the data processing unit, according to a connection of at least a first source of conditioned water or fluid to at least an inlet automatically determines an enabling of at least a first actuating combination of said first command allowing a first configuration of supplying of said outlet by means of water from at least a first selected inlet or from a first selected set of inlets. Said electronic device configured for activation in at least an operating configuration of dispensing through said data processing unit.