WaterWeco (R) with automatic incident angle optimization for economical maintenance and management.
Open-type mini hydroelectric power generation system WaterWeco(R)
The flow rate of water channels and sluice gates should be more than 2 m³ per second, and an effective drop of about 1.5 meters is a guideline for selecting suitable project sites.
Since around 2009, we have been conducting social experiments on standalone micro-hydropower generation in collaboration with local governments and consulting companies, optimizing the Takao Eris Power Plant in Niimi City, Okayama Prefecture, which has been operational since March 2016, and starting coordinated operations in Minami-Uonuma City, Niigata Prefecture, from December 2024. The turbine was developed in collaboration with Nagasaki University and Nishinihon Fluid Technology Co., Ltd.
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basic information
Among small hydropower generation, micro hydropower generation can utilize either relatively high head or low head, but WaterWeco (R) utilizes the low head method. When using low head, considerations must be given to initial investment, power generation efficiency, maintenance management, as well as biodiversity and environmental impact. It is possible to effectively utilize existing headworks that have already been established.
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Applications/Examples of results
There are examples of hydropower plant discharge water being used in agricultural water channels. By arranging units in drop structures such as sluice gates, it is possible to enhance cost performance.
Company information
Due to unitization, parallel installation is possible. (Note: Strength calculations may be necessary depending on the flow rate.) Brief history: From 2009, collaborated with municipalities such as Okayama City, Tsuyama City in Okayama Prefecture, and Miri City in Hiroshima Prefecture, as well as consulting companies for feasibility studies (demonstration experiments), owning power generation and self-consumption facilities, conducting long-term operational tests, and improving power generation efficiency, with support from the Okayama Prefectural Industrial Promotion Foundation and Nagasaki University Graduate School of Engineering, a fluid research institution, and Nishinihon Fluid Technology Co., Ltd. for collaborative research, optimization, product development, and completion of actual machine installation operations. Patents were registered in October 2020 (including other overseas patents in Europe and the United States, the WaterWeco trademark, and design registration for the water turbine blade shape). *Installation is possible in suitable locations where installation was previously impossible due to overflow risks. ★ Labor-saving ➣ Easy measures against debris and heavy snowfall (no dust removal device required) ➣Significant reduction in maintenance costs (initial costs)． ★ Automatic layout control mechanism adjusted to flow rate fluctuations ➢ Stable power generation efficiency during the period. ★ Consideration for biodiversity ➣ Even when installed in rivers where fish migrate, fish passages can be secured. ★ Awards and technology registration history: Various awards including the Eco-Products Award and the Chairman's Award from the Invention Association, and registration with UNIDO STePP, WIPO GREEN etc...
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