Abstract: A solar water heating system, including: (a) a solar heating collector, having: (i) an array of convex lenses; (ii) a panel disposed below the array of convex lenses, wherein the array of convex lenses focuses sunlight on the panel to heat areas of the panel; (iii) a fluid chamber disposed below the panel; and (iv) a plurality of members extending from the panel into the fluid chamber to transfer heat from the panel into fluid in the fluid chamber; (b) a fluid reservoir; (c) a fluid inlet line for moving fluid from the fluid reservoir into the fluid inlet of the solar heating collector; (d) fluid outlet line for moving fluid from the fluid chamber of the solar heating collector to the fluid reservoir; and (e) a pump for moving fluid cyclically through the fluid chamber of the solar collector and the fluid reservoir.

Abstract: Solar receiver having a receiver funnel, a solar absorber, and an absorber rotation drive mechanism. The receiver funnel has a funnel entrance and a funnel exit. The solar absorber may have a spherical shape and has an absorber rotation axis. The solar absorber is rotatably positioned in the funnel exit. The solar absorber has an internal absorber fluid chamber, an absorber fluid intake and an absorber fluid outlet. The absorber rotation drive mechanism provides for rotating the solar absorber about the absorber rotation axis.

Abstract: This application discloses a heat driven liquid self-circulating device, system and method, means the liquid system formed by said devices according to said method can be circulated automatically to transfer the heat without external pump power. The heat driven self-circulating device for heated liquid which used with a liquid heat collector, comprises an airtight container for containing heated liquid, having a wall to separate its outer and inner spaces; said inner space is filled with heated liquid partially and having a upper air/vapor space above liquid level surface and lower liquid space under liquid level surface; a first inlet, a first outlet, a second inlet and a second outlet arranged on said wall of the container that both first inlet and first outlet are under the liquid level surface in said container, and said first inlet not lower than said first outlet.

Abstract: A solar powered generator assembly is provided for driving a turbine using steam produced by solar power. The assembly includes a fluid tank and a fluid line having a first end and a second end each in fluid communication with the fluid tank. A fluid is positioned in the fluid tank and the fluid line. A lens focuses solar rays into a heat collector coupled to the lens. The heat collector has a reflective curved interior surface configured for reflecting solar rays to facilitate heating the heat collector. A medial portion of the fluid line is wrapped around and heated by the heat collector converting the fluid into a gaseous state. A turbine is operationally coupled to the fluid line driving the turbine to produce electrical current.

Abstract: The present invention provides a solar water heating apparatus which includes concentric inner and outer vessels defining an annular cavity therebetween, within which cavity a phase change material is located, and which is vaporised when solar radiation is incident on the outer vessel, in order to transfer heat to a water store contained in the inner vessel, this water store being fed fresh unheated water while the heated water is extracted therefrom for domestic or other purposes.

Abstract: A drainback tank having a solar return pipe, at least a portion of the solar return pipe being located within the internal body of the tank, the solar return pipe having a hole that is in close proximity to the hole of an output pipe, such that the fluid in the solar return pipe flows into the output pipe and leaves the tank housing to be used to heat the fluid of a corresponding hot water tank via convection in a heat exchanger.

Abstract: A solar thermal panel is disclosed. An example evacuated flat solar thermal panel includes a first evacuated cavity enclosed between first and second layers of material. A second evacuated cavity is enclosed between third and fourth layers of material. A high temperature working fluid cavity is enclosed between the second and third layers of material. A plurality of pillars are disposed between the first and second layers of material, and disposed between the third and fourth layers of material.

Abstract: The present invention provides a solar water heating apparatus which includes concentric inner and outer vessels defining an annular cavity therebetween, within which cavity a phase change material is located, and which is vaporised when solar radiation is incident on the outer vessel, in order to transfer heat to a water store contained in the inner vessel, this water store being fed fresh unheated water while the heated water is extracted therefrom for domestic or other purposes.

Abstract: An object is to provide a heating tank capable of highly efficiently heating a target to be heated and having high safety and reliability, and a hot water storage tank. The heating tank in which the target to be heated is stored and which heats the target to be heated by a circulated refrigerant of a heat pump, for example, the hot water storage tank which is heated by the circulated refrigerant of the heat pump to produce hot water in the tank includes a heat exchanger in which a wall surface of a tank main body is partially secured to peripheral edge portions and inner portions of two metal plates and in which non-secured portions swell to constitute a refrigerant passage closed except an inlet and an outlet. A thickness dimension of one metal plate is set to be larger than that of the other metal plate, and the one metal plate is arranged on the inner side of the other metal plate.

Abstract: Disclosed is a solar water heating apparatus comprising a central tank and one or more outer layers wherein at least part of the exterior of the outermost layer is adapted to be exposed to the sun. The outer layers also form water pathways such that, when the tank is substantially filled with water, said water is able to circulate around a path formed by said central tank and the outer layers. A pulsing pump may help circulate the water. An auxiliary heating element may be also provided, such as a small gas burner.

Abstract: A water pre-heating arrangement, incorporating with a water heating system including a water heater, includes a heat exchanger for guiding water to flow from a water source to a water tank, and a solar energy collecting device having a solar energy collecting surface mounted to the heat exchanger wherein the solar energy collecting surface is adapted for collecting and transforming solar energy into heat energy to increase a water temperature in the heat exchanging unit so as to pre-heat the water in the heat exchanging unit before entering into the water tank. Therefore, the water heater powered by a fossil fuel heats up the water in the water tank from the pre-heated temperature to a predetermined temperature while being energy effective.

Abstract: An overmolding insert includes a base having at least one opening in a first surface, the opening communicating with a second surface opposite the first surface, at least one hollow projection extending from the first surface, the hollow projection having a first opening communicating with the opening of the first surface and a second opening located at a terminal portion of the hollow projection, the insert further having two opposed side walls, each side wall being joined to the first surface, two opposed end walls being joined to an opposite end of the first surface and extending from one side wall to the other side wall. The side walls, the end walls, and the first surface define a partially closed space, with the terminal portion of the hollow projection extending beyond the partially closed space.

Abstract: The installation stores thermal energy, i.e., heat energy and/or cold energy. A plurality of conduits are laid underground. Several regions that are arranged one inside the other and contain energy-saving material and conduits respectively are provided. The conduits that are arranged in the individual areas can be connected to users having different temperature levels. The innermost region is maintained at a highest temperature differential relative to the outside of the installation and the innermost region can be connected, inter alia, to drive an electrical generator.