The invention relates to enclosed solar parabolic trough reflector systems for thermal heat generation that can ultimately be used in various applications. The system includes a modular dual arch building design with a transparent building envelope and a reflector assembly connected within the building through a bearing assembly. The system is particularly suited for solar heat collection in harsh environment.

A heating system comprising a non-tlai transparent housing comprising walls made of heat isolating material; a tank within the housing for receiving liquid; a platform laid on the ground; legs holding the tank on the platform; light-absorbent and heat conductive fins coupled to the tank, and a cold fluid inlet with a non-return valve therein, and a hot water fluid, the inlet and outlet extending from the tank to outside the housing; means to transfer heated air from inside the housing to outside the housing.

A mobile power plant comprising a retractable flexible solar array structure comprising a plurality of thin film photovoltaic modules mounted on a flexible substrate; a spool attached to a portion of the flexible solar array structure and around which the flexible solar array structure can be rolled; power cabling integrated into the flexible solar array structure for transmitting power from the plurality of photovoltaic modules to the spool-end of the flexible solar array structure; a transportable container in which the spool is mounted, the transportable container being capable of housing the flexible solar array structure when it is in a rolled configuration.

A mobile power plant comprising a retractable flexible solar array structure comprising a plurality of thin film photovoltaic modules mounted on a flexible substrate; a spool attached to a portion of the flexible solar array structure and around which the flexible solar array structure can be rolled; power cabling integrated into the flexible solar array structure for transmitting power from the plurality of photovoltaic modules to the spool-end of the flexible solar array structure; a transportable container in which the spool is mounted, the transportable container being capable of housing the flexible solar array structure when it is in a rolled configuration.

A solar power system includes a plurality of solar power cells mounted on a spherical frame; a hemispherical reservoir mounted to the spherical frame to enclose at least a portion of the spherical frame such that a gap is defined between the spherical frame and an interior surface of the reservoir, the reservoir configured to hold a fluid that includes a solar cell cleaning solution; and at least one actuator mounted to the spherical frame and operable to rotate a portion of the spherical frame that supports the plurality of solar power cells through the gap.

Embodiments include a kit comprising parts capable of being assembled into a reflector structure. In some embodiment, the kit includes (i) a deployable frame with a set of node connectors and a set of rods, (ii) a parabolic member comprising a track, a first parabolic-member end, and a second parabolic-member end, and (iii) a reflective membrane comprising an edge bead configured to interface with the track of the parabolic member such that, when the reflector structure is assembled, the reflective membrane is stretched substantially along the track of the parabolic member.

A solar collector housing that is opened and closed without tools includes structure for accommodating temperature-related expansion and contraction of a polymer absorber housed within the collector. The housing includes a transparent cover, a frame for holding the transparent cover, and a base. The cover, frame and base collectively define a hollow interior within which the polymer absorber is positioned. A plurality of latches is secured to an exterior of the frame. The frame and base are pivotally connected to one another when the latches are open so that the collector housing can be opened. The housing cannot be opened when the latches are closed. A pair of variable gate closure components are positioned in slots formed in a second end of the collector and enable the polymer absorber to expand and contract without placing stress on the absorber tubes.

A compact low concentration photovoltaic (LCPV) apparatus totally enclosed in a protective clear dome against harsh environment without active cooling. A conical mirror reflector, a circular lens refractor and a planar circular crystalline silicon photovoltaic solar panel rotate simultaneously inside the dome to concentrate sun rays and instantly produce electricity. The mirror increases electrical current three times and the lens increases one time for total four times using low overall concentration of five to twenty times sun. The lens is offset from the plane parallel to the photovoltaic solar panel, while the panels forming the mirror are angled offset to a center axis perpendicular to the solar panel. The optical assembly and solar panel are mounted in a conical aluminum cage which is pivoted from a rotary turntable for the daily azimuth and altitude rotations. The dual axis movements consist of irregular intermittent increments of less than one second on time and less than two minutes off time while following the sun path. The electrical power produced is at least two times more than from fixed conventional crystalline silicon solar panel occupying the same planar surface area. LCPV dual tracking systems offer reduced electricity generation costs, reduced installation costs and increased flexibility in deployment.

An absorber system solves problems of known absorber systems for use in solar fields in that the absorber tube is suspended on a rail below an absorber cover. The design also makes it possible to move measuring and cleaning robots and the like along the absorber tube more and allows the absorber tube and the secondary reflector to be jointly suspended, whereby an exact mutual alignment between the two components is enabled.

A solar array (50) for a spacecraft (10), comprising a solar concentrator that is provided with photovoltaic cells and reflective areas configured for reflecting solar radiation towards the photovoltaic cells, wherein the reflective areas and the photovoltaic cells are provided on opposite surfaces of concentrator reflector sheet members (56) that are repositionable from a retracted state wherein the concentrator reflector sheet members are in a substantially flat arrangement, to a extended state wherein the concentrator reflector sheet members are raised to allow the reflective areas to reflect solar radiation towards the exposed photovoltaic cells.

Alternatively or in addition, the solar array may comprise a support panel, which may be at least partially flexible for retaining the support panel in a bent panel shape when the solar array is in the stowed state fixed at a position near a body of the spacecraft.