You can watch an introduction video of Kawaguchi Dam and its hydroelectric power plant as well as a beautiful 4K movie of the Naka River and surrounding forests shot from a drone in cooperation with Naka Town. Enjoy an overwhelming visual experience with the latest technology.
Split from water and turning back into water (by recombining with oxygen), hydrogen is an ultimate form of clean energy.
There is a hydrogen station at the Tokushima Prefectural Office, as well as some hydrogen cars being driven around in Tokushima.
The hydrogen production experimental device shows how solar energy produces hydrogen right before your eyes.
You can use different experimental tools to learn how each natural energy system works. For example, create wind energy by fanning the wind mill to get the music to play.
The museum staff can provide explanations about the tools and how to use them, so please feel free to ask.
A wall in the visual exhibition room is a display of a future smart town made up of pictures drawn by visitors.
You can have your own drawings digitized and pop up on the wall, adding to the creation of a huge town right in front of you.
There are various kinds of natural energy facilities installed in this smart town, such as hydroelectric, solar, wind and biomass energy plants. Each facility can be seen generating electricity to light up the highway across the town.
You can even change the weather of the town by touching the wall.
If you touch the frogs dancing Awa Odori…
In addition, the drawings that have been drawn are printed as developments, making it possible to create only one “paper craft” in the world.
There is a miniature hydroelectric facility on the way to the museum from the the parking lot. You can watch water flowing through the turbine. The amount of electricity generated by the facility is shown on the digital display board.
On display are two full-sized turbine runners used for the water power generation at dams. You can touch and imagine how powerful the water flow is.
Kawaguchi Power Plant: Kaplan turbine runner
Weight: 6t / unit
Amount of water used: up to 70㎥ / s
Hinotani Power Plant: Francis turbine runner
Weight: 4.4t / unit
Amount of water used: up to 60㎥ / s
Attached to the outside wall of the museum are two large boards of Japanese cedar dyed Japan Blue with Awa Indigo. The traditional wood shaving technique called “naguri” created the wavy surface producing subtle shading. The color shade will change with changing reflections of light.
About Kawaguchi Dam
Kawaguchi Dam is located on the Naka River (primary flow channel: 125km, contributory area 880sq. kilometers), the second major river in Tokushima. Sakashu Power Plant (Ottachi Dam), Hinotani Power Plant (Nagayasuguchi Dam), and Kawaguchi Power Plant (Kawaguchi Dam) were built in conjunction with the integrated river development implemented for flood control and water utilization. When Hinotani Power Plant hits peak power generation, the volume of water used for generating power fluctuates depending on how much power is generated. Kawaguchi Dam was built as a regulating reservoir to alleviate the flow fluctuation at the lower reach. The effective capacity of the reservoir is 950,000 cubic meters and the water level is adjusted between EL93.50 meters and 95.00 meters.
Mechanism of Water-power Generation
Water power generates electricity by utilizing the force of falling water turning a water turbine directly connected to the generator. This form of natural energy is beneficial since it uses the naturally created force of water instead of CO2 and waste-producing fossil fuels.
Kawaguchi Power Plant
Kawaguchi Dam produces hydroelectric power at 11,700 kilowatts of power per second per 70 tons of water used. A Kaplan turbine (witch has adjustable blades) is used at Kawaguchi Dam to allow for adjustments in correspondence volume fluctuations.