TY - JOUR
T1 - An Ignored Wind Generates More Electricity
T2 - A Solar Updraft Tower to a Wind Solar Tower
AU - Watanabe, Koichi
AU - Fukutomi, Sho
AU - Ohya, Yuji
AU - Uchida, Takanori
N1 - Funding Information:
The authors are grateful to laboratory engineers, Kenichiro Sugitani, Kimihiko Watanabe, and Keiji Matsushima. Advice and comments given by Ai Watanabe were a great help during writing. This research was supported by the grants from Kyushu University.
Publisher Copyright:
© 2020 Koichi Watanabe et al.
PY - 2020
Y1 - 2020
N2 - A solar updraft tower is one of the wind power generation plants which utilizes solar energy. The purpose of this study was to ascertain whether the tower was also able to utilize crosswind energy. Wind tunnel experiments and numerical simulations were conducted simulating the crosswind. The results showed that suctioned updraft speed in the tower was proportional to the crosswind speed, and its conversion rate depended on the tower configuration. A diffuser-shaped tower with a vortex generator achieved to produce the updraft whose speed exceeded the crosswind speed. It was due to the low pressure created by the vortex atop the tower and to the diffuser effect. The crosswind utilization enables the simple power generation device to generate electricity during the night, and the hybrid utilization of renewable energies contributes to the increasing wind energy market.
AB - A solar updraft tower is one of the wind power generation plants which utilizes solar energy. The purpose of this study was to ascertain whether the tower was also able to utilize crosswind energy. Wind tunnel experiments and numerical simulations were conducted simulating the crosswind. The results showed that suctioned updraft speed in the tower was proportional to the crosswind speed, and its conversion rate depended on the tower configuration. A diffuser-shaped tower with a vortex generator achieved to produce the updraft whose speed exceeded the crosswind speed. It was due to the low pressure created by the vortex atop the tower and to the diffuser effect. The crosswind utilization enables the simple power generation device to generate electricity during the night, and the hybrid utilization of renewable energies contributes to the increasing wind energy market.
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U2 - 10.1155/2020/4065359
DO - 10.1155/2020/4065359
M3 - Article
AN - SCOPUS:85082675601
SN - 1110-662X
VL - 2020
JO - International Journal of Photoenergy
JF - International Journal of Photoenergy
M1 - 4065359
ER -
