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  2. Solar energy - Wikipedia

    en.wikipedia.org/wiki/Solar_energy

    Solar energy is the radiant energy from the Sun's light and heat, ... The most common types of solar water heaters are evacuated tube collectors (44%) and glazed flat ...

  3. Light tube - Wikipedia

    en.wikipedia.org/wiki/Light_tube

    Total external reflection, hollow light tube Total internal reflection, block of acrylic. Light tubes (also known as solar pipes, tubular skylights or sun tunnels [1]) are structures that transmit or distribute natural or artificial light for the purpose of illumination and are examples of optical waveguides.

  4. Carbon nanotubes in photovoltaics - Wikipedia

    en.wikipedia.org/wiki/Carbon_nanotubes_in...

    Combining the physical and chemical characteristics of conjugated polymers with the high conductivity along the tube axis of carbon nanotubes (CNTs) provides a great deal of incentive to disperse CNTs into the photoactive layer in order to obtain more efficient OPV devices. The interpenetrating bulk donor–acceptor heterojunction in these ...

  5. Renewable thermal energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_thermal_energy

    Renewable thermal energy is the technology of gathering thermal energy from a renewable energy source for immediate use or for storage in a thermal battery for later use.. The most popular form of renewable thermal energy is the sun and the solar energy is harvested by solar collectors to heat water, buildings, pools and various processes.

  6. Solar tube - Wikipedia

    en.wikipedia.org/wiki/Solar_tube

    A solar tube may refer to: Evacuated tube collector – a type of high efficiency solar thermal collector; Light tube This page was last edited on 24 ...

  7. Solar updraft tower - Wikipedia

    en.wikipedia.org/wiki/Solar_updraft_tower

    The solar updraft tower (SUT) is a design concept for a renewable-energy power plant for generating electricity from low temperature solar heat. Sunshine heats the air beneath a very wide greenhouse-like roofed collector structure surrounding the central base of a very tall chimney tower.

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