NTN Micro Hydro Turbine
The NTN Micro Hydro Turbine is a propeller hydroelectric turbine for installation in water channels or flowing bodies of water.
The NTN Micro Hydro Turbine is a hydroelectric turbine designed to be placed in flowing bodies of water, rather than requiring a change in elevation. It is intended to be installed in irrigation or sewage channels, and can be used to provide power to pumps or other equipment. The product has been tested and is available for market purchase.
Japan Interview with representative
This product is distributed by NTN Global from Kuwana-shi, Mie Province, Japan.
~13,611 USD (1.5 million Yen)Converted on 23 May 2019
Users with access to agricultural irrigation channels, industrial water channel or water and sewer services.
The product is manufactured by NTN’s Green Energy Products Division in Kuwana-gun, Mie Prefecture, Japan.
Users can obtain the product by inquiring to NTN’s Green Energy Products Division on their website.
The manufacturer has distributed about 10 units (as of July 2019). Interview with representative
The output voltage (in terms of alternating current)
The minimum power output of the system
The maximum power output of the system
The output frequency of the generator in Hz
The minimum required head (in meters) to generate power
The minimum required flow rate (in L/s) to generate power
How many nozzles are in the system
The weight of the system
Whether the product is single or 3-phase
The NTN Micro Hydro Turbine is a hydraulic, permanent magnet, synchronous generator with a propeller turbine of 5 wings with diameters 600 mm, 900 mm or 1,300 mm. They are designed to be placed in flowing bodies of water to rotate the turbine using low torque bearings, where the flow rate does not exceed 3 m/s. Each unit weighs 170 kg, and can be installed over existing waterways with a minimum width and depth of 1 m. The power output depends on the size of the turbine wings, and the 1,300 mm diameter wings produce 2.0 kW in a flow of 2 m/s. The energy is stored in the batteries included with each unit.
Technical support could be provided domestically with Japan, however it is not currently offered internationally. Interview with representative
Replacement components are available from the manufacturer. Interview with representative
20 years Interview with representative
The product is designed to be operated in water channels with small flow rates, up to a maximum of 3 m/s. Performance varies depending on wing diameter and flow rate. Testing performed measured a power output of 500 W for a turbine with a wing diameter of 900 mm in a channel with a flow rate of 1.6 m/s.
No third-party testing
No third-party testing organizations, only testing performed by the manufacturer.
Potential hazards for this product arise from debris in the water channel. NTN offer a debris screen that can be installed to protect the turbine.
An existing waterway or channel of flowing water is required to install this product within.
Although no academic research was found featuring this product, this paper presents general information on micro hydro turbines:
Alexander, K., Giddens, E., Fuller, A., 2009, Axial-flow turbines for low head microhydro systems. Renewable Energy. Vol 34, Issue 1, pp 35-47.
Installation requires 1 mobile crane and 3 workers.
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