A water heating solar module designed for being connected to a boiler of a water heating system, the module comprises a vessel having a water inlet and a water outlet, a first heating element installed in the vessel, and a power supply for feeding the first heating element with electric power produced from solar energy. The module is arranged as follows: the vessel is positioned near the boiler, so that the vessel's bottom portion is placed not higher than the boiler's bottom portion; the water inlet is provided at the vessel's bottom portion and is adapted for receiving water from the boiler; the water outlet is provided at the vessel's top portion and is adapted for delivering water from the vessel to the boiler; the power supply is electrically connectable to a photoelectric device for receiving electric energy there-from, and to the first heating element, for heating water in the vessel. The invention also describes a system comprising the described module connected to the mentioned boiler, and a method of upgrading an existing water heating solar system by the described module.

A system for providing air conditioning to a living space and heating potable water. The system comprising a heat pump circuit comprising a compressor for circulating a refrigerant around the heat pump circuit, a first condenser, a second condenser and an evaporator. The evaporator being adapted to receive a first flow of air from an air inlet to transfer heat from the first flow of air to the refrigerant. The first condenser being adapted to receive a flow of water to transfer heat from the refrigerant to the water. The second condenser being adapted to receive a second flow of air to transfer heat from the refrigerant to the second flow of air. The first flow being provided from the evaporator to a living space by an air outlet.

A method and system for providing an interactive learning heating schedule for a water boiler system, the method including the steps: (a) receiving an estimate of an amount of available hot water in a water boiler of the water boiler system; (b) receiving usage data for the water boiler system, the usage data including at least one expected usage pattern extrapolated from the usage data; and (c) generating a heating schedule for the water boiler, based on at least one expected usage pattern and the estimated amount of available hot water.

A shower system for a shower having a water supply mechanism including a hot water supply and a cold water supply. The system includes: a shower stall; an air heating and delivery mechanism for heating and delivering hot air to the shower stall and including: an air inlet, air piping, an air supply blower to produce an air flow, an air heater, and a hot air outlet. The system further includes: a shower-water piping system including: a hot and cold water mixing valve; and a water fogger nozzle disposed within the hot air outlet to thereby produce a spray of hot air and water suspension; and an air and water temperature and flow controller.

A liquid heating appliance for heating water or other liquids, suitably to a target temperature of from 55° C. to around boiling point, includes a primary heat chamber or body (heat source chamber) that is thermally insulated and which in use contains a high thermal density heat storing liquid or solid; and a secondary chamber alongside the primary chamber through which a liquid to be heated is passed in use. The appliance has a heat transfer feature to selectively transfer thermal energy from the heat-storing liquid or solid to the liquid to be heated in the secondary chamber. The secondary chamber is preferably a conduit through which the liquid to be heated is able to flow and the thus heated liquid can be delivered to a tap as hot water for a range of uses. Water may also be heated for a central heating system for space heating.

A solar thermal assisted water heating system includes a thermal collector comprising a plurality of fluid channels configured to collect heat from a surface of a photovoltaic module, a drain-back tank coupled to the thermal collector, a first pump coupled to the drain-back tank and configured to pump fluid from the drain-back tank to the thermal collector, a first heat exchanger configured to receive fluid from the thermal collector, a heat pump coupled to the first heat exchanger and configured to remove heat from the fluid and heat water with the removed heat, and a controller configured to control the first pump and heat pump. The system may include a photovoltaic module and a hot water tank. These systems improve the efficiency of water heating, and the drain-back tank may serve as a thermal battery that stores heat and provides the stored heat when environmental temperatures decrease.

The present invention relates to a solar water heater (SWH) for producing hot water for domestic use, said SWH is inspired from the thermosiphon SWH to manufacture an SWH more efficient in winter and in summer. It is made up of two hot water storage tanks (17) (22) mounted in series in order to have an operating temperature as stable as possible, equipped with a guidance system for heating incoming cold water by passing through the collectors before entering the hot water storage tank (25-a) (25-b), a solar collector receiving solar radiation through its twin transparent faces (35) (36), stainless steel sheet mirrors that reflect the solar radiation applied to the collector through its rear transparent face (36) and a low energy consumption integrated circulator for gaining heat by cancelling out load losses that characterize the resistances to the passage of water in the SWH circuit (29).

An improved modular, removable system of building-integrated solar panel photovoltaics for easy residential and commercial roof installation for generating electrical and thermal energy.

A digital fluid heating system may include a solar collection system configured for focusing sunlight on a focal axis, an elongated flow element arranged and configured for transporting fluid along the solar collection system at the focal axis, and a flow-control assembly comprising a digitally controlled valve configured to control the flow of the fluid in the elongated flow element such that pathogens present in the fluid are substantially inactivated before the fluid exits the fluid heating system and at a maximized flow rate under the given energy providing conditions. The system may also include one or more digital controls and communication systems for remote and/or automatic control.

The thermal hybrid tank is a multifunctional tank with a shape that makes for easy construction and assembly while maximizing the ability of thermal syphoning. This invention can store an inlet liquid and thermal energy from a heat exchanger, for outlet usage in multiple applications. The tank typically has a pitch coupling front surface and a downward angled front surface which together allows for coupling with the heat exchanger and a roof decking or a solar panel, of which could be a liquid cooled PV solar panel, or a solar focusing panel, or a roof structure.