An aspect of some embodiments of the current invention relates to an integrated system for heat distribution among a plurality of users. In some embodiments, the system includes a separate automatic control of heat distribution to each user and/or separate billing to each user. For example, a system may supply hot fluid to a plurality of apartments in a building and/or in multiple buildings. Optionally, each apartment has separate remote controlled valves controlling flow of heated fluid to the apartment and/or a sensor sensing how much heat enters and leaves the apartment in the hot fluid. In some embodiments, a processor controls the valve and/or receives data from sensors. The processor optionally controls devices that generate and/or store and/or dissipate heat. Optionally the processor predicts energy availability, costs and needs controls valves and/or devices to provide for predicted and/or unexpected needs while reduce cost of the energy.

A system and method for providing domestic hot water and/or space heating within a building. The system comprises at least one storage vessel comprising a removable cover, wherein an internal volume of the storage vessel is fluidly connected to a source of sewage and/or wastewater from one or more buildings, a water-source heat pump, at least one solar thermal collector, at least one heat transfer circuit. The at least one heat transfer circuit includes at least one fluid line containing a heat transfer fluid, and a controller for controlling an operation of the system. The system has an operation mode in which the controller of the system is configured to connect the at least one solar thermal collector to the at least one storage vessel via the at least one fluid line. The system stores a heat output from the at least one solar thermal collector in sewage and/or wastewater.

A heat exchanger for heating fresh water using heat from wastewater in a shower or bathtub. The heat exchanger has a drain pan, a heat exchanger unit that is arranged in the drain pan, and a distributing element for distributing draining wastewater over the heat exchanger unit. The heat exchanger unit has multiple tube portions that follow one another sequentially and are connected to one another by diverting portions. Each two horizontally running tube portions that follow one another and that are thus connected by a deflecting portion are arranged one over the other, and wastewater, which is dripping or flowing down, is sprinkled on or flows over the tube portions one after the other.

An aspect of some embodiments of the current invention relates to an integrated system for heat distribution among a plurality of users. In some embodiments, the system includes a separate automatic control of heat distribution to each user and/or separate billing to each user. For example, a system may supply hot fluid to a plurality of apartments in a building and/or in multiple buildings. Optionally, each apartment has separate remote controlled valves controlling flow of heated fluid to the apartment and/or a sensor sensing how much heat enters and leaves the apartment in the hot fluid. In some embodiments, a processor controls the valve and/or receives data from sensors. The processor optionally controls devices that generate and/or store and/or dissipate heat. Optionally the processor predicts energy availability, costs and needs controls valves and/or devices to provide for predicted and/or unexpected needs while reduce cost of the energy.

There is herein described energy storage systems. More particularly, there is herein described thermal energy storage systems and use of energy storable material such as phase change material in the provision of heating and/or cooling systems in, for example, domestic dwellings.

This heat recovery device replaces the floor drain in a common residential shower. A large circular pan joins flush with the shower stall floor and funnels greywater into the drain piping. The circular pan contains the heat transfer device which preheats the incoming cold water and recovers approximately half of the heat that would otherwise be lost. The incoming cold water travels through a water turbine where it rotates an impeller. The impeller is magnetically coupled with a rotary whisk. The rotary motion continuously washes the draining greywater over a spiral warming coil. The spiral coil transfers the heat to the incoming fresh water as it travels to the shower's mixing valve.

A flushing assembly comprising a foundation and a heat exchanging member. The foundation comprises a bowl shape providing an envelope surface defining an upper inlet and a lower outlet, the lower outlet being arranged to communicate with a drainage. The heat exchanging member comprises a helical channel defined between an upper and a lower wall, the helical channel having an extension along the envelope surface of the bowl shaped foundation, and the helical channel being arranged to be provided with a through flow of a secondary fluid. The flushing assembly is configured to provide a helical channel for a primary fluid extending between the envelope surface of the foundation and the lower wall of the heat exchanging member for guiding the primary fluid there through from the upper inlet to the lower outlet towards the drainage, thereby allowing heat exchange between the primary fluid and the secondary fluid.

A free-standing Energy Recovery System enables sanitary recovery of thermal energy with heat transfer from hot waste effluent to incoming domestic water. The source of the effluent may, for example, be conventional commercial ware-washing, clothes washing equipment, pasteurization and other industrial processes.

An integrated renewable energy and asset system is provided. In some embodiments, the system comprises: an existing parking lot positioned adjacent to a building structure, wherein the existing parking lot has an associated pattern; bore holes that are formed into the existing parking lot, wherein the bore holes are organized based on the pattern of the existing parking lot; vertical columns inserted into at least a first portion of the bore holes, wherein: crossbeams are installed on an upper portion of a vertical column to form a support structure; and a canopy is connected to the crossbeams, wherein the canopy is formed from multiple attached photovoltaic modules and thermal tubes are integrated with the photovoltaic modules; geothermal tubes that capture thermal energy are inserted into at least a second portion of the bore holes, wherein each of the thermal tubes and each of the geothermal tubes is connected to a geothermal heat pump and wherein each of the thermal tubes is connected to the geothermal heat pump; and a hardware processor that is configured to: receive sensor information from sensors disposed on the canopy; determine whether to direct at least a portion of the thermal energy captured using the geothermal tubes to the solar thermal panels based on the received sensor information; and cause the heat captured using the geothermal tubes to be directed to the solar thermal panels based on the determination.

The present invention provides a heat pump system and a wastewater tank. The heat pump system comprises: a main circuit connecting a compressor, a first heat exchanger, a throttling element, and a refrigerant pipeline of a second heat exchanger; a wastewater tank for receiving and storing domestic wastewater; a wastewater heat recovery circuit connecting a driving device, a first heat exchange unit, and a defrosting pipeline of the second heat exchanger, wherein the second heat exchanger is a three-medium fluid heat exchanger, the defrosting pipeline and the refrigerant pipeline are thermally coupled with each other, and the first heat exchange unit is thermally coupled with the wastewater tank; wherein, the heat pump system has a fast defrosting mode in which the wastewater heat recovery circuit transports residual heat from wastewater in the wastewater tank to the second heat exchanger to accelerate defrosting.