کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
300296 512479 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A conceptual study of floating axis water current turbine for low-cost energy capturing from river, tide and ocean currents
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
A conceptual study of floating axis water current turbine for low-cost energy capturing from river, tide and ocean currents
چکیده انگلیسی

The cost of utilizing kinetic energy of river stream, tidal and ocean current is considered to be higher than that of wind power generation because of difficulties in construction and maintenance of devices installed in seawater. As a solution to the problem, the authors propose a new concept of water stream turbine. The main idea is in the manner of supporting turbine. Although it is similar to a vertical axis turbine, the direction of turbine axis is not firmly fixed and its tilt angle is passively adjustable to the stream velocity. Since it does not have to keep the turbine axis in upright position, required structural strength and weight of the device will be reduced significantly. This paper describes the application ranging from the small hydro power in river streams to large application of tidal and ocean current turbine. In the large capacity plant for tidal stream and ocean current, the main mechanism of turbine axis support is the same as that of the wind turbine authors proposed in the previous paper. It leads to the further opportunity of cost reduction. The sample design of a multi-megawatt ocean current turbine shows the possibility of high economic performance of the concept. The results show that the cost of energy in the concept can be comparable to a land based wind turbine.


► Floating axis water turbine is presented as a new type of hydro kinetic turbine.
► The tilted vertical turbine can be a low-cost and low-technology hydro power.
► The tidal stream turbine covers large sweep area with minimized structural weight.
► Planned 2 MW turbine for Kuroshio Ocean Current expects good economic performance.
► Though in start-up study, this paper describes the future low-cost water turbine.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 57, September 2013, Pages 283–288
نویسندگان
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