A distributed solar power generation and hot water supplying system includes: a photovoltaic power generation self-service sun tracking system, an inverter, a controller, a storage battery, a heat-exchanging water tank and an electric heater provided therein, wherein a solar battery and a solar collector are mounted on the photovoltaic power generation self-service sun tracking system, an electricity output terminal of the photovoltaic power generation self-service sun tracking system is respectively connected to an inversing input terminal of an inverter and a surplus power supplying input terminal of a controller; an MCU-controlled power output terminal of the inverter is respectively connected for off-grid power consumption or grid-connected power generation, and to an inversing output terminal of the controller; a charging/discharging control output/input terminal inside the inverter is connected to an input/output terminal of the storage battery and a storage battery power supplying input terminal of the controller.

Disclosed are systems and methods for automated hybrid pool heating unit configurations. An example method may include determining, by a processor, a first input parameter associated with an operation of a pool heating system comprising a first pool heating unit and a second pool heating unit, wherein the first pool heating unit is a first type of pool heating unit and the second pool heating unit is a second type of pool heating unit. The example method may also include sending, using the processor, based on receiving the first input parameter, a first signal to enable the first pool heating unit to heat a first pool. The example method may also include determining, by the processor, a second input parameter. The example method may also include sending, using the processor, based on receiving the second input parameter, a second signal to enable the second pool heating unit to heat the first pool.

A method for determining a preferential minimum power set point by a consumer i, said consumer including an electric water heater, the method including determining the state of the consumer i at an instant k; determining a minimum power set point P.sub.c.sup.min(i,k) at the instant k as a function of the state of the consumer i determined during the determining of the state of the consumer i at an instant k; determining a minimum power set point P.sub.c.sup.min(i,k+1:K) at the instants k+1 to K as a function of the predicted state of the consumer i estimated from the state of the consumer i determined during the determining of the state of the consumer i at an instant k; determining a preferential minimum power set point P.sub.c.sup.min_pref(i,k) as a function of the minimum power set point P.sub.c.sup.min(i,k) at the instant k and of the minimum power set point P.sub.c.sup.min(i,k+1:K) at the instants k+1 to K.

A storage water heater includes at least one heating device, at least one storage tank wherein water is stored and heated, at least one control and management unit capable of checking at least the heating device, at least one inlet duct through which water may be introduced into the tank, at least one outlet duct through which water may be sent/withdrawn from the tank, wherein there are at least two heating devices, of which at least one main heating device and at least one auxiliary heating device are provided, and wherein the water heater includes a circulator dedicated, via at least one hydraulic connection duct, to the recirculation of the storage water stored in the tank, the circulator being capable of recirculating the water of the storage between the lower part and the top part of the tank, by passing through the auxiliary heating device.

A storage water heater includes at least one heating device, at least one storage tank wherein water is stored and heated, at least one control and management unit capable of controlling the at least one heating device, at least one inlet duct through which water may be introduced into the tank, at least one outlet duct through which water may be sent/withdrawn from the tank, at least two heating devices, of which at least one main heating device and at least one second auxiliary heating device adapted to act as a pre-heater, wherein the water heater includes a by-pass duct capable of deviating, entirely or partially, the water flow entering the tank so as to guide and convey it in a zone of the tank placed at a height higher than the outlet section of the inlet duct.

A system for solar assisted water heating provides hot water to a user at a lower cost, higher energy efficiency, and with a quicker response time than conventional systems, reducing energy losses, and improving user comfort. The basic architecture includes four main components: a solar collector, a heat exchanger, an in-line heater, and a control system. A transient heat profile of a first temperature in a primary loop is measured while a first flow generator G1 is active for the primary loop. Solar assisted heating of water in a secondary loop is provided based on: a flow of water in the secondary loop; a current first temperature; and the transient heat profile of the first temperature by activating: the first flow generator in the primary loop and an in-line water heater in the secondary loop.

A heated water delivery system comprising: a system inlet and a system outlet, with a primary flow path and a secondary flow path in a parallel configuration in between; the primary flow path comprising a primary source of heated water; the secondary flow path comprising a secondary source of heated water; the system further comprising switching means comprising a valve disposed within the primary flow path, the switching means being arranged to deliver heated water from the primary source when a temperature of the water from the primary source is greater than a threshold temperature, and being arranged to selectively deliver heated water from the at least one secondary source when the temperature of the water from the primary source is less than a threshold temperature. The switching from one source to another is determined by the relative change in pressure drop of the flow paths.

A fluid-based system for use in heating and/or cooling. In particular, the system may have a fluid heating device, which may be a solar fluid heating device, configured to heat a fluid. Heat from the heated fluid may be transferred to one or more cooling subsystems or heating subsystems. A cooling subsystem may be an absorption cooling subsystem, for example, wherein heat may cause phase change of a refrigerant. A heating subsystem may include a storage tank through which heated fluid may be circulated to heat the storage tank. A system of the present disclosure may include multiple cooling and/or heating subsystems for cooling and or heating a variety of different environments, objects, or materials.

A dual heating unit water heating system and method including both an AC heating unit and a DC heating unit installed in a common water heating tank. The system may enable solar power to be integrated into a standard storage heating unit without the need for additional access piping. The AC heating unit includes an AC heating element, and an AC thermostat operable to deactivate the AC heating element when water contained within the water tank exceeds a first threshold temperature. The DC heating unit includes a DC heating element, and a DC thermostat operable to deactivate the DC heating element when water contained within the water tank exceeds a second threshold temperature. The DC power source may be solar panel having an array of photovoltaic cells.

A fluid-based system for use in heating and/or cooling. In particular, the system may have a fluid heating device, which may be a solar fluid heating device, configured to heat a fluid. Heat from the heated fluid may be transferred to one or more cooling subsystems or heating subsystems. A cooling subsystem may be an absorption cooling subsystem, for example, wherein heat may cause phase change of a refrigerant. A heating subsystem may include a storage tank through which heated fluid may be circulated to heat the storage tank. A system of the present disclosure may include multiple cooling and/or heating subsystems for cooling and or heating a variety of different environments, objects, or materials.