The Experts below are selected from a list of 2127 Experts worldwide ranked by ideXlab platform

Graham J Nathan - One of the best experts on this subject based on the ideXlab platform.

  • the influence of wind speed Aperture Ratio and tilt angle on the heat losses from a finely controlled heated cavity for a solar receiver
    Renewable Energy, 2019
    Co-Authors: Alfonso Chinnici, Mehdi Jafarian, Maziar Arjomandi, Bassam B Dally, Graham J Nathan
    Abstract:

    Abstract The first systematic experimental study of the combined influences of wind speed (0–9 m/s), Aperture Ratio (0.33–1) and tilt angle (15°–45°) on the mixed (free and forced) convective heat losses from a heated cavity, is presented. The cylindrical cavity is heated by 16 individually temperature-controlled heating elements in the open section of a wind tunnel. Heat flux distribution and total heat losses from the cavity were measured. A complex inter-dependence was found between Aperture Ratio, wind speed and convective heat losses. In particular, the total heat losses can vary by up to ∼75% by varying the Aperture Ratio from 0.33 to 0.75, for no wind condition, but the effect of Aperture Ratio is decreased as wind speed is increased. The tilt angle was found to have a small effect on the heat losses relative to the Aperture Ratio and wind speed. Nevertheless, the average minimum mixed heat loss for various wind speeds occurs for a tilt angle of between 15° and 30° for a downward tilting solar tower system.

Shunpei Yamazaki - One of the best experts on this subject based on the ideXlab platform.

Hany Aziz - One of the best experts on this subject based on the ideXlab platform.

Kei-hsiung Yang - One of the best experts on this subject based on the ideXlab platform.

Aldo Di Carlo - One of the best experts on this subject based on the ideXlab platform.

  • laser patterning engineering for perovskite solar modules with 95 Aperture Ratio
    IEEE Journal of Photovoltaics, 2017
    Co-Authors: Alessandro Lorenzo Palma, Fabio Matteocci, Antonio Agresti, Sara Pescetelli, Emanuele Calabrò, Luigi Vesce, Silke Christiansen, Michael Schmidt, Aldo Di Carlo
    Abstract:

    Small area hybrid organometal halide perovskite based solar cells reached performances comparable to the multicrystalline silicon wafer cells. However, industrial applications require the scaling-up of devices to module-size. Here, we report the first fully laser-processed large area (14.5 cm2) perovskite solar module with an Aperture Ratio of 95% and a power conversion efficiency of 9.3%. To obtain this result, we carried out thorough analyses and optimization of three laser processing steps required to realize the serial interconnection of various cells. By analyzing the statistics of the fabricated modules, we show that the error committed over the projected interconnection dimensions is sufficiently low to permit even higher Aperture Ratios without additional efforts.

  • Laser-Patterning Engineering for Perovskite Solar Modules With 95% Aperture Ratio
    IEEE Journal of Photovoltaics, 2017
    Co-Authors: Alessandro Lorenzo Palma, Fabio Matteocci, Antonio Agresti, Sara Pescetelli, Emanuele Calabrò, Luigi Vesce, Silke Christiansen, Michael Schmidt, Aldo Di Carlo
    Abstract:

    Small area hybrid organometal halide perovskite based solar cells reached performances comparable to the multicrystalline silicon wafer cells. However, industrial applications require the scaling-up of devices to module-size. Here, we report the first fully laser-processed large area (14.5 cm2) perovskite solar module with an Aperture Ratio of 95% and a power conversion efficiency of 9.3%. To obtain this result, we carried out thorough analyses and optimization of three laser processing steps required to realize the serial interconnection of various cells. By analyzing the statistics of the fabricated modules, we show that the error committed over the projected interconnection dimensions is sufficiently low to permit even higher Aperture Ratios without additional efforts.