Devices, systems and methods for solar powered water heater are provided. A solar powered water heater may comprise a pump, a heater structure and a solar panel. The heater structure in may be in communication with the pump. The solar panel may be in communication with the pump, wherein the pump is powered by the solar panel. In exemplary embodiments, the solar powered water heater floats in a pool or spa and uses solar power to drive a pump which pumps water though a heater structure before returning it to the pool or spa.

A structure includes a bracket affixed to a substrate. A bracket pole member is affixed to the bracket. A bracket back brace is affixed to the bracket. The bracket back brace is affixed to the substrate. In an embodiment, the bracket back brace includes a back brace member having a beveled end with a threaded bolt attached thereto. The threaded bolt being secured through the bracket via a nut. In an embodiment, the bracket back brace is affixed to a strut of the substrate, and the back brace member has a non-beveled end. The non-beveled end is inserted into either (i) a shackle coupling rotatably affixed to a hinge plate affixed to the strut, or (ii) a side-mount collar affixed to the strut.

A solar power system for a marine dock includes a telescoping vertical member affixed to a dock via a bracket. A solar panel is pivotably and rotatably affixed to the top end of the telescoping vertical support. A weatherproof equipment container is affixed to the telescoping vertical support. A meter unit, battery, and inverter are housed within the weatherproof equipment container. First leads connect the solar panel to the meter unit, which is configured to measure and display energy and/or power generated by the solar panel. Second leads are configured so that current is passed through the meter unit to the battery in a charging configuration. A third lead connects one terminal of the battery to a measurement terminal on the meter unit, which is configured to measure and display the output voltage of the battery. Fourth leads connect the battery to the inverter in a discharge configuration.

A seasonal heat-cold energy storage and supply pool, including a salt-free solar pool at the upper layer and an energy storage pool at the lower layer. The salt-free solar pool and the energy storage pool are separately connected to a water source. The salt-free solar pool includes a pool bottom and a pool wall. The pool bottom of the salt-free solar pool functions as a top cover of the energy storage pool. The energy storage pool includes a wall and a bottom which are a composite layer. The energy storage pool is provided with a heat exchange coil configured to implement heat exchange in the energy storage pool for supplying heat and cold for an external user. The salt-free solar pool and the energy storage pool are communicated through controllable valves at the pool bottom of the salt-free solar pool.

A seasonal heat-cold energy storage and supply pool, including a salt-free solar pool at the upper layer and an energy storage pool at the lower layer. The salt-free solar pool and the energy storage pool are separately connected to a water source. The salt-free solar pool includes a pool bottom and a pool wall. The pool bottom of the salt-free solar pool functions as a top cover of the energy storage pool. The energy storage pool includes a wall and a bottom which are a composite layer. The energy storage pool is provided with a heat exchange coil configured to implement heat exchange in the energy storage pool for supplying heat and cold for an external user. The salt-free solar pool and the energy storage pool are communicated through controllable valves at the pool bottom of the salt-free solar pool.

A solar float device for use in a livestock watering facility to inhibit the freezing of water in a livestock watering facility. The solar float device having upper and lower shells that are connected to each other. The upper shell encloses an air space and the lower shell encloses a ballast space. A bulkhead is connected to the lower shell and separates the air and ballast spaces. A ballast material contained within the ballast space maintains the float device upright in the water and is thermally conductive for receiving and storing heat generated by the solar float device from solar radiation. An energy absorbing element contacts the lower shell and at least a portion is arranged either at or above the level of the water such that the energy absorbing element is exposed to the solar radiation for absorbing the solar radiation and converting the solar radiation into heat.

Pool heaters, including floating pool heaters, and related methods are presented. For instance, a pool heater includes a power supply; a body structure comprising a first portion comprising a heat absorbing material forming one or more channels; and a pump powered by the power supply to circulate a fluid via the one or more channels of the body structure. The heat absorbing material of the first portion absorbs solar energy and transfers the solar energy to the fluid circulating in the body structure of the pool heater and then to pool water.

Pool heaters, including floating pool heaters, and related methods are presented. For instance, a pool heater includes a power supply; a body structure comprising a first portion comprising a heat absorbing material forming one or more channels; and a pump powered by the power supply to circulate a fluid via the one or more channels of the body structure. The heat absorbing material of the first portion absorbs solar energy and transfers the solar energy to the fluid circulating in the body structure of the pool heater and then to pool water.

The invention relates to a floating structure comprising pontoons (P) that are interconnected so as to form at least one closed floating frame of any geometrical shape, which is fixed to means for stabilising and anchoring in relation to a body of water, the at least one frame (n) being secured to a sealed pocket (1) to be filled with water in order to allow the movement of at least one person, said pocket (1) being fixed to a filtering system (2). The walls of the pocket (1) are provided with flexible thread-like elements (6) that have elastic means (7) for coupling both to a framework (8) that has been secured to the at least one frame and is designed to be submerged in the body of water, and also to a part of the underneath face of the pontoons (P).

A localized heating structure includes a spectrally-selective solar absorber, that absorbs incident solar radiation and reflects at wavelengths longer than 2 m, with an underlying heat-spreading layer having a thermal conductivity equal to or greater than 50 W/(mK), a thermally insulating layer, adjacent to the spectrally-selective solar absorber, having a thermal conductivity of less than 0.1 W/(mK), one or more evaporation openings through the spectrally-selective solar absorber and the thermally insulating layer, and an evaporation wick, disposed in one or more of the evaporation openings in the thermally insulating layer, that contacts liquid and allows the liquid to be transported from a location beneath the thermally insulating layer through to the spectrally-selective solar absorber in order to generate vapor from the liquid. The thermally insulating layer is configured to have a density less than the liquid so that the localized heating structure is able to float on the liquid.