A hot water tank including: a shell enclosing a chamber containing a heat exchange liquid, the shell including a base, side wall and lid; a cold water inlet connected to a first end of a heat exchanger, and a hot water outlet connected to a second end of the heat exchanger, wherein the heat exchanger is located in an upper portion of the chamber; a primary heating element connected to a power source for heating the heat exchange liquid, the primary heating element being located in a lower portion of the chamber.

A solar panel mount for installing a solar panel on a roof. The mount generally includes a bracket plate a first surface, a top edge, a bottom edge, two opposite side edges flanking the first surface, wherein at least a portion of one of side edges is in the form of a flange transverse to the first surface; and a base plate attached to the bottom edge of the bracket plate.

A mount assembly is provided for mounting a structure to a roof having a top surface. The mount includes a flashing including an aperture; a bracket including a first portion and a second portion, the first portion having an opening and a countersink extending around the opening, the second portion extending at an angle away from the flashing, the second portion including a slot configured to be coupled to the structure; a fastener extending through the aperture and through the opening of the bracket; and a seal extending around the aperture and positioned between the flashing and the first portion of the bracket, the seal engaging the countersink of the bracket and being compressed against the flashing.

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.

This application relates to the ventilation of a solar roof. For example, a solar roof can include a solar roof tile and a spacer, batten or other ventilating components to space the solar roof tile from the roof deck, and provide ventilation to the solar roof tile, for reduced operating temperatures and improved efficiency in electricity generation.

A ventilated solar panel system mounted on a roof of a building (1), comprising a plurality of joists (12, 112) arranged substantially normal to an upper ridge (14) of the roof, and extending from the upper ridge (14) to a lower region of the roof, and a set of rectangular solar panels (2, 13), arranged on and supported by the joists (12, 112). The system further comprises a set of electrical fans (25), each fan (25) being arranged in the lower region of the roof and being aligned with one of the joists (12, 112), wherein each fan (25) is configured to create a flow of air towards the ridge (14), and wherein each joist (12, 112), in an end facing one of the fans (25), is formed with a dividing edge (32, 132) configured to divide the flow of air into two sub-flows (26a, 26b), a first sub-flow (26a), directed to a first side of the joist (12, 112), and a second sub-flow (26b) directed to a second side of the joist (12, 112), opposite to the first side.

A thermal energy storage system is provided, comprising an outer shell defining an outer shell volume, an energy transfer module, comprising an input port for providing energy to the energy storage system, an output port for retrieving energy from energy storage system, wherein the outer shell is provided with a fluid distribution network.

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.

The present disclosure relates to a system for mounting solar panel tiles (or other tiles/panels) over a roof (surface). The system includes mounting frames provided with holes at the bottom for fixing them parallelly over the roof. Bolting members and overhang members are attached to two opposite sides of the tiles to form a tile assembly. The bolting members and overhang members of the tile assembly are provided with a set of holes to allow coupling of the tile assembly between two adjacent mounting frames using bolt/screws. Further, sealing agents are provided on the edges of the tiles as well as the tile assemblies, thereby making the system aesthetically pleasing and leakproof. Another set of vents are provided on the base frames, to allow cables to pass through them, and provide proper ventilation beneath the tiles.

A tile replacement flashing is used with a tile hook. A bottom tile replacement flashing is shaped for placement on a lower portion of a location where a tile is removed from a roof. A top tile replacement flashing is shaped for placement on an upper portion of a location where the tile is removed from the roof. The top tile replacement flashing includes an elevated region at a lower portion of the top tile replacement flashing, the elevated region. The bottom tile replacement flashing is shaped so that after attachment of the bottom tile replacement flashing on the roof, the tile hook can be attached to a rafter of the roof, the attached tile hook extending over an upper portion of the bottom tile replacement flashing and having a portion that, past the upper portion of the bottom tile replacement flashing, extends upwards. The top tile replacement flashing is shaped so that after attachment of the top tile replacement flashing on the roof, at least part of the elevated region of the top tile replacement flashing extends over the bottom tile replacement flashing. A height of the elevated region is sufficient to allow room for the tile hook to extend over the bottom tile replacement flashing and under the elevated region of top tile replacement flashing.