The disclosed technology includes an on-demand water heater which uses an electric heat source to heat the water. The on-demand water heater can have a low fluid capacity heating chamber which has an inlet and an outlet, an electric heat source for heating the water, and a controller to control the electric heat source and maintain the temperature of the water at a predetermined temperature setting. The on-demand water heater can be powered by a direct current power source. The on-demand water heater can also utilize a solar thermal system to provide additional heat to the water.

A solar heat exchanger for heating water which includes an array of tubes, an injection molded manifold there being connections between each tube in the array and the manifold which are over molded to seal the tubes to the manifold.

A system for energy storage and electricity generation is described. The system includes an energy storage system providing compressed air and an electricity generation system. The electricity generation system includes an airlift pumping system pneumatically coupled to the energy storage system. The airlift pumping system includes a water collecting tank containing collecting water and a riser tube having a base immersed in the collecting water and configured for injection of the compressed air into the riser tube through the air pipeline to provide air bubbles within the riser tube that produce an upward flow of the collecting water together with the air bubbles. The electricity generation system also includes a hydro-electric power system driven by upward flow of the collecting water together with the air bubbles to produce electricity, and a water heating system for heating the collecting water in the water collecting tank.

In accordance with various exemplary embodiments, solar energy shade structures and methods of design and revenue generation are disclosed. These systems comprise structures capable of supporting solar panel at heights greater than 18 feet above their mounting surface. These systems may be installed in confined spaces. These systems also comprise structures that are customizable, allowing an installation to be configured with a desired lighting and environmental effect. The methods discussed herein describe processes for achieving desired design effects based on natural elements. Moreover, the methods discussed herein describe processes for reducing the costs of generating solar energy and/or reducing the costs of providing a solar structure.

A solar energy collector includes an energy dissipating receiver configured to absorb solar energy, an absorption tube that encourages a transfer of heat from the energy dissipating receiver, a base including a groove that receives at least a portion of the absorption tube and supports the absorption tube, and a header that is positioned at least partially within an end of the absorption tube. The absorption tube includes a curved portion and a flat portion. The flat portion faces the energy dissipating receiver.

A particle receiver includes an inlet, an outlet and multiple tubes rotatably coupled to the inlet and the outlet. The tubes receive particles via the inlet, the particles passing along a passageway of each of the tubes to the outlet. The tubes receive a solar flux as they rotate to heat the particles passing through the tubes. A heat transfer coefficient of the particles is increased by increased mixing via air flowing in the tubes, fins used to mix the particles or via channels via which the particles pass through that increase turnover and mixing of the particles.

The present disclosure describes a hybrid photovoltaic (PV) panel that includes: a first photovoltaic (PV) layer comprising photovoltaic cells capable of converting energy from incident solar power into electricity; a second transparent layer arranged underneath the first PV layer such that a portion of the incident solar power passes through; and a third thermal collection layer arranged underneath the second transparent layer and comprising absorbing material capable of absorbing energy from the portion of the incident solar power that has passed through the second transparent layer, wherein the second transparent layer includes a thermally insulating material to provide a thermal barrier between the first PV layer and the third thermal collection layer such that when the PV panel is operated, the first PV layer operates at a temperature lower than a temperature of the thermal collection layer.

The present invention discloses a solar heating system for cyclic heating of a swimming pool, relating to the swimming pool heating technology. The solar heating system structurally comprises a swimming pool, solar heaters and a water pump. Compared with the prior art, a solar panel is mainly added, and the water pump is installed on a solar heater in an integrated way that the water pump is connected with not only the solar heater as a waterway, but also the solar panel as a power supply circuit. After the above-mentioned improvements, the whole solar heating system has the advantages such as a compact structure, convenient disassembly and assembly, and miniaturization. Since the solar panel independently supplies power to the water pump, the solar heating system can be used normally in an outdoor place far away from a mains socket. The application place is not restricted with wide application scope.

A mounting device includes a base having an internal cavity, a top, and an open bottom in communication with the internal cavity. The device includes a first upper member above the base, wherein the first upper member extends upwardly from the base, and a second upper member is above the base, wherein the second upper member extends upwardly from the base. The device further includes a fastener opening formed though the base for receiving a fastener when the mounting device is secured to a roof. The fastener opening is in communication with the internal cavity.

A system and method for treating flue gas of a boiler based on solar energy are provided, wherein a heat pump is connected with a heat collector via first and second valves, a carbon dioxide electrolysis chamber is connected with a flue gas pretreatment chamber and a power distribution control module for electrolyzing and reducing carbon dioxide, a gas phase separation chamber is connected with a gas phase outlet to separate a mixture, and discharge the separated gas phase products; a Fischer-Tropsch reaction chamber is connected with the gas phase separation chamber to pass the separated carbon monoxide and hydrogen into a flowing reaction cell, a liquid phase product separation chamber is connected with a liquid phase outlet to separate the liquid phase hydrocarbon fuel products, and separate and supplement electrolyte; an electrolyte cooling circulation chamber is connected with the liquid phase product separation chamber.