The present invention provides a solar heat collecting device having good heat collection efficiency. A uniaxial solar-tracking reflective mirror group is arranged such that each longitudinal axis thereof faces the same direction. A first biaxial solar-tracking reflective mirror group and a second biaxial solar-tracking reflective mirror group are arranged lined up in a direction orthogonal to the longitudinal axis direction of uniaxial solar-tracking reflective mirrors. The uniaxial solar-tracking reflective mirror group is arranged so as to be sandwiched on both sides by the first biaxial solar-tracking reflective mirror group and the second biaxial solar-tracking reflective mirror group. Each mirror group sends solar heat received during uniaxial or biaxial tracking in accordance with the position of the sun, to a heat collecting device.

The present invention provides a solar heat collecting device having good heat collection efficiency. A uniaxial solar-tracking reflective mirror group is arranged such that each longitudinal axis thereof faces the same direction. A first biaxial solar-tracking reflective mirror group and a second biaxial solar-tracking reflective mirror group are arranged lined up in a direction orthogonal to the longitudinal axis direction of uniaxial solar-tracking reflective mirrors. The uniaxial solar-tracking reflective mirror group is arranged so as to be sandwiched on both sides by the first biaxial solar-tracking reflective mirror group and the second biaxial solar-tracking reflective mirror group. Each mirror group sends solar heat received during uniaxial or biaxial tracking in accordance with the position of the sun, to a heat collecting device.

Disclosed is a reflective solar apparatus comprising a light receiving device and at least one light reflecting device. The light receiving device delimits a first light receiving surface used for receiving sunlight. The light reflecting device is provided on a side face of the first light receiving surface and has a curtain-type reflecting surface and a driving mechanism used for driving the curtain-type reflecting surface to expand and retract. When the curtain-type reflecting face is completely or partially expanded, sunlight reaching the curtain-type reflecting surface is at least partially guided to an area where the first light receiving surface is located. Since a curtain-type reflecting surface able to expanded or retract is used, not only can the sun be tracked but also the curtain-type reflecting surface can be expanded or retracted according to the strength of wind power.

A recoverable and renewable heat recovery system includes a variable speed inverter compressor in fluid connection with a first heat exchanger and a second heat exchanger via a fluid circuit. The system further includes a solar thermal collection module positioned on top of the compressor and in fluid communication with the compressor, the first heat exchanger and the second heat exchanger via the fluid circuit. A light intensity sensor is configured to determine light intensity on the solar thermal collection module. The solar thermal collection module is configured to retain solar energy thermal energy to increase fluid pressure in the compressor.

A system for use on a surface to collect solar energy from the sun has a stand, a module, and solar collector(s). The stand supportable on the surface has rotational points rotatably supporting the module so it can rotate about a first axis of rotation. A first drive disposed on the stand is operable to provide first rotation, and a cable connected between a hoop pulley of the module and the first drive on the stand can rotate the module about the first axis to direct the solar collector(s) toward the sun. The solar collector(s) disposed on the module can be photovoltaic cells for collecting solar energy. A second drive on the module can rotate an adjacent solar collectors on the module using pulleys and cable. Reflectors on the collectors can focus the sun rays to photovoltaic cells. The second drive can rotate the collectors about a second axis, carried by the first axis, to direct the solar collector(s) toward the sun.

A system for use on a surface to collect solar energy from the sun has a stand, a module, and solar collector(s). The stand supportable on the surface has rotational points rotatably supporting the module so it can rotate about a first axis of rotation. A first drive disposed on the stand is operable to provide first rotation, and a cable connected between a hoop pulley of the module and the first drive on the stand can rotate the module about the first axis to direct the solar collector(s) toward the sun. The solar collector(s) disposed on the module can be photovoltaic cells for collecting solar energy. A second drive on the module can rotate an adjacent solar collectors on the module using pulleys and cable. Reflectors on the collectors can focus the sun rays to photovoltaic cells. The second drive can rotate the collectors about a second axis, carried by the first axis, to direct the solar collector(s) toward the sun.

A system for use on a surface to collect solar energy from the sun has a stand, a module, and solar collector(s). The stand supportable on the surface has rotational points rotatably supporting the module so it can rotate about a first axis of rotation. A first drive disposed on the stand is operable to provide first rotation, and a cable connected between a hoop pulley of the module and the first drive on the stand can rotate the module about the first axis to direct the solar collector(s) toward the sun. The solar collector(s) disposed on the module can be photovoltaic cells for collecting solar energy. A second drive on the module can rotate an adjacent solar collectors on the module using pulleys and cable. Reflectors on the collectors can focus the sun rays to photovoltaic cells. The second drive can rotate the collectors about a second axis, carried by the first axis, to direct the solar collector(s) toward the sun.

A system for use on a surface to collect solar energy from the sun has a stand, a module, and solar collector(s). The stand supportable on the surface has rotational points rotatably supporting the module so it can rotate about a first axis of rotation. A first drive disposed on the stand is operable to provide first rotation, and a cable connected between a hoop pulley of the module and the first drive on the stand can rotate the module about the first axis to direct the solar collector(s) toward the sun. The solar collector(s) disposed on the module can be photovoltaic cells for collecting solar energy. A second drive on the module can rotate an adjacent solar collectors on the module using pulleys and cable. Reflectors on the collectors can focus the sun rays to photovoltaic cells. The second drive can rotate the collectors about a second axis, carried by the first axis, to direct the solar collector(s) toward the sun.

A collector element for collecting solar energy. The collector element is made of metal and comprises at least one elongated central ridge comprising at least one internal flow channel for a heat transfer medium, first and second elongated side ridges at opposite sides of the at least one central ridge and an elongated depression between each two adjacent ridges. At least one side ridge comprises at least one fastening element by means of which at least one substantially solar radiation permeable covering element is to be fastened to the collector element for covering at least the at least one elongated central ridge of the collector element.

A collector element for collecting solar energy. The collector element is made of metal and comprises at least one elongated central ridge comprising at least one internal flow channel for a heat transfer medium, first and second elongated side ridges at opposite sides of the at least one central ridge and an elongated depression between each two adjacent ridges. At least one side ridge comprises at least one fastening element by means of which at least one substantially solar radiation permeable covering element is to be fastened to the collector element for covering at least the at least one elongated central ridge of the collector element.