Solar deflection device (1) comprising at least the following components: a hollow funnel (2), comprising a funnel wall (2a) that comprises a reflective surface (2b) on an inside of the funnel (2) for reflecting electromagnetic radiation, an inlet aperture (3) of said funnel (2), wherein the inlet aperture (3) extends within an inlet plane (3a), an exit aperture (4) of said funnel (2), wherein the exit aperture (4) extends within an exit plane (4a) and wherein the area (4b) enclosed by the exit aperture (4) has a different size than the area (3b) enclosed by the inlet aperture (3), a curved line that (5) extends from the center (3c) of the inlet aperture (3) to the center (4c) of the exit aperture (4), wherein for each plane (6a) that intersects said curved line (5) perpendicularly, the reflective surface (2b) of the funnel wall (2a) has a cross-section (6) within said plane (6a), wherein said cross-section (6) encloses an area (6b) and is centered around the curved line (5), a deflection angle (7) that is enclosed between said plane (6a) and the inlet plane (3a).

Solar radiation guidance device (1), particularly for a solar reactor system (100), comprising the following components: a solar concentrator (13), for collecting and concentrating electromagnetic radiation, a solar deflection device (10) comprising a funnel (2) with a funnel wall (2a) that comprises a specular reflective surface (2b) on an inside of the funnel (2) for reflecting solar and/or thermal radiation, wherein said funnel (2) further comprises an inlet aperture (3) and an exit aperture (4), wherein the inlet aperture (3) is comprised in an inlet plane (3a) and the exit aperture (4) is comprised in an exit plane (4a), and wherein said funnel (2) is arranged such that it collects the concentrated electromagnetic radiation from the solar concentrator (13), wherein the solar deflection device (10) is mounted to allow rotation around a rotation axis (A) perpendicular to the inlet plane (3a) of the inlet aperture (3) between at least two positions, such that for each position of the at least two positions of the solar deflection device (10) the collected electromagnetic radiation from the solar concentrator (13) is redirectable through the funnel (2) along a corresponding direction.

A solar energy collection system includes (a) an elongate solar collector unit with dual opposed elongate, hemi-parabolic mirrors each having a linear focus line; (b) an elongate receiver having two linear gaps, each of which lies along a focus lines of one mirror, and including a heat pipe and a heat transfer structure to heat a heat transfer fluid within the heat pipe with solar energy; and (c) a subsystem configured to move the heat transfer fluid through the receiver.

Thermal energy storage systems and methods that include near-black body concentrated sunlight receivers disposed in thermal storage media for storing sunlight and extracting thermal energy for multiple end-use applications. The concentrated sunlight receivers are characterized by absorption of sunlight of at least 95%. The thermal energy storage systems are modular and transportable and can be scaled-up in capacity. Solar concentrators may be integrated with the thermal energy storage systems.

A system for producing electricity from solar energy is provided. The system includes a window pan for installing on building such that solar radiation impinges thereon, a heat receiving element coupled to the window pan and being configured to receive heat from the solar radiation. The system further includes a gas line thermally coupled to the heat receiving element with a heat transferring member the gas line having a liquid gas being configured to evaporate by the heat generated by the heat receiving element and to increase thereby pressure in the gas line. The system further includes a turbine having a rotor configured to convert rotating motion to electricity, the turbine being configured to receive evaporated gas from the gas line and the evaporated gas is configured to rotate the motor.