A surface cleaning device that may include an axis; dust cleaning elements that are connected to the axis and comprise multiple fins that comprise (i) one or more first fins of a first durability and a first cleaning capability and (ii) one or more second fins of a second durability and a second cleaning capability, wherein the first durability exceeds the second durability and the second cleaning capability exceeds the first cleaning capability; and a rotating mechanism for rotating the axis and the multiple fins.

The embodiment of the disclosure provides a photovoltaic component. A light transmission module of the photovoltaic component covers an upper surface of a solar panel module, and a circuit board module is disposed on a lower surface of the solar panel module, wherein the upper surface and the lower surface are two opposite surfaces of the solar panel module. The light transmission module comprises a transparent substrate and a piezoelectric film layer, wherein the transparent substrate is disposed oblique to the ground, and the piezoelectric film layer is attached to a backlight surface of the transparent substrate. The circuit board module is electrically connected with the piezoelectric film layer, and when the piezoelectric film layer is electrified, the piezoelectric film layer vibrates at different frequencies.

The solar energy and solar farms are used to generate energy and reduce dependence on oil (or for environmental purposes). The maintenance, operation, optimization, and repairs in big farms become very difficult, expensive, and inefficient, using human technicians. Thus, here, we teach using the robots with various functions and components, in various settings, for various purposes, to improve operations in big (or hard-to-access) farms, to automate, save money, reduce human mistakes, increase efficiency, or scale the solutions to very large scales or areas, e.g., for repair, operation, calibration, testing, maintenance, adjustment, cleaning, improving the efficiency, and tracking the Sun.

The solar energy and solar farms are used to generate energy and reduce dependence on oil (or for environmental purposes). The maintenance, operation, optimization, and repairs in big farms become very difficult, expensive, and inefficient, using human technicians. Thus, here, we teach using the robots with various functions and components, in various settings, for various purposes, to improve operations in big (or hard-to-access) farms, to automate, save money, reduce human mistakes, increase efficiency, or scale the solutions to very large scales or areas, e.g., for repair, operation, calibration, testing, maintenance, adjustment, cleaning, improving the efficiency, and tracking the Sun.

A solar panel system comprises a base, the base attached to a building at a geographic location; a rotating crown having a rotating mechanism, the base supporting the crown; a solar panel device attached to the crown, the solar panel device having an exposed surface, the shapes of the base, crown and solar panel device positioning the exposed surface in a sloped orientation relative to a horizontal plane at the geographic location, the rotating mechanism rotating the solar panel device, the base and crown shapes positioning the rotating mechanism to rotate about an axis perpendicular to the horizontal plane and to maintain a consistent slope relative to the horizontal plane as the exposed surface rotates; and a control system controlling rotation from a first azimuthal direction to a second azimuthal direction that faces the exposed surface towards the Sun more normally than the first azimuthal direction.

A solar panel system comprises a base, the base attached to a building at a geographic location; a rotating crown having a rotating mechanism, the base supporting the crown; a solar panel device attached to the crown, the solar panel device having an exposed surface, the shapes of the base, crown and solar panel device positioning the exposed surface in a sloped orientation relative to a horizontal plane at the geographic location, the rotating mechanism rotating the solar panel device, the base and crown shapes positioning the rotating mechanism to rotate about an axis perpendicular to the horizontal plane and to maintain a consistent slope relative to the horizontal plane as the exposed surface rotates; and a control system controlling rotation from a first azimuthal direction to a second azimuthal direction that faces the exposed surface towards the Sun more normally than the first azimuthal direction.

A brush suitable for performing at least one of a cleaning, buffing, and polishing action on a surface without requiring water comprises a core member, the core member having a central axis surrounded by a plurality of C-channel grooves and a plurality of sheets of material, each sheet of material comprised of closed-cell silicone foam rubber, being folded to define a double-sided flap, and secured to a respective one of the plurality of C-channel grooves. The sheet of material is secured to the core member to permit relative movement of the double-sided flap with respect to the surface in at least a first direction, and the relative movement of the double-sided flap produces at least one of the cleaning, buffing and/or polishing action on the surface without requiring water.

A brush suitable for performing at least one of a cleaning, buffing, and polishing action on a surface without requiring water comprises a core member, the core member having a central axis surrounded by a plurality of C-channel grooves and a plurality of sheets of material, each sheet of material comprised of closed-cell silicone foam rubber, being folded to define a double-sided flap, and secured to a respective one of the plurality of C-channel grooves. The sheet of material is secured to the core member to permit relative movement of the double-sided flap with respect to the surface in at least a first direction, and the relative movement of the double-sided flap produces at least one of the cleaning, buffing and/or polishing action on the surface without requiring water.

A solar collection system includes an absorption refrigeration system to generate water from atmospheric moisture, and to do so without the use of an electrically operated compressor. At least a portion of the solar energy captured by the solar collection system is used to operate the absorption refrigeration cycle. The absorption refrigeration cycle provides cooling that causes water in the atmosphere to condense into a liquid that can be collected and used for various applications. As one example, the collected liquid can be used for the cleaning of the solar collection system of contaminants like dust or bird drippings. In other applications, the water can be used outside the solar collection system including, but not limited to, irrigation, drinking, and other industrial purposes.

A solar collection system includes an absorption refrigeration system to generate water from atmospheric moisture, and to do so without the use of an electrically operated compressor. At least a portion of the solar energy captured by the solar collection system is used to operate the absorption refrigeration cycle. The absorption refrigeration cycle provides cooling that causes water in the atmosphere to condense into a liquid that can be collected and used for various applications. As one example, the collected liquid can be used for the cleaning of the solar collection system of contaminants like dust or bird drippings. In other applications, the water can be used outside the solar collection system including, but not limited to, irrigation, drinking, and other industrial purposes.