Tulevaisuus on vedyssä? Näin väitän.

Tulipa avattua netissä japanilainen TV-kanava NHK ja siellä oli tuore 4 minuutin juttu Toyotan vetyautosta. Suosittelen katsomaan, jos vain englannin kuunteleminen on edes välttävällä tasolla. Mielenkiintoinen maailman ensiesittely. Tokion Olympialaisissa 2020 tullaan ajamaan vetyautoilla - infran rakentaminen on aloitettu Tokion "Metropolitan Government " toimesta.

Juttu ei nyt ihan suoraan renkaisiin liity, mutta talvi tuotti vetyautollekin ylimääräisiä haasteita. Pakokaasuna poistuva vesi jäätyi ja jumitti koneen:) Tämän jutun nähtyäni uskon hybridiautojen jäävän kokeiluksi ja todellisen seuraavan sukupolven ympäristöä säästävän auton olevan vetyauton. Vety on ilmainen energianlähde, kunhan se saadaan otettua talteen ennen kuin se reagoi hapen kanssa.

Ehkäpä kaasukin polttoaineena olisi aika hyvä, koska myös sen palamistuotteena syntyy vain vettä.

Nov. 27, 2014

http://www3.nhk.or.jp/nhkworld/english/news/techtrends/20141127.htmlHydrogen Car Headway

Officials with Toyota Motor say they're about to launch the car of the future. They're unveiling the world's first commercial fuel-cell vehicle.
Engineers cleared many bumps in the road developing the car. And other companies are building the infrastructure to supply hydrogen .

This is Toyota's fuel-cell car, the Mirai, meaning "the future". In the final stage of development they take the car for a test run.

The car quickly accelerates to 90 miles, or 150 kilometers, per hour. Engineers are carefully monitoring the sounds it makes and the vibrations of the car body at high speed.

They say the largest problem was the water that's emitted instead of exhaust gas.

If the water freezes in cold weather, it may block air intake, causing the car to stop. To sell the car globally, the engineers must ensure it runs stably under all weather conditions.

"The water gave us a lot of trouble. It was said those who get control over water will be the winner in the fuel-cell race."

Mikio Kizaki / Toyota Motor

How did they prevent the water from freezing? After much trial and error, they chose to deliberately cut the power generation efficiency of the fuel cell.

They noted that reducing the amount of electricity generated from the hydrogen-oxygen reaction produces heat instead. They succeeded in preventing the water turning into ice by generating heat just after the system starts.

Developing storage tanks for high-pressure hydrogen was also a challenge.

The tanks must be sturdy. In the event of a collision, it's important the tanks don't leak. But, at the same time, they must be light.

"We wrapped carbon fibers around the tanks to reinforce them."

Mikio Kizaki / Toyota Motor

Engineers took carbon fiber used in aircraft and developed it for use in automobiles. They went on to clear many other challenges, including reducing costs.

Hydrogen has been used worldwide as rocket fuel and for other purposes. In fact Japan produces a large quantity of it.

This factory is run by the company Asahi Glass. It produces sodium hydroxide for a broad range of uses, including metal processing and the production of detergent. Hydrogen is created as a byproduct of the process.

A government estimate says Japan in 2030 will have enough hydrogen capability to fuel up to 13 million vehicles for a year.

Some companies have seen a new business opportunity in Japan's abundant hydrogen supply.

Industrial gas supplier Iwatani has been producing its own hydrogen but is now also collecting hydrogen generated as a byproduct by other companies and selling it.

Iwatani has built a pipeline connecting its own plant with the factory run by Asahi Glass. The Iwatani plant liquefies the hydrogen and ships it out. Iwatani officials plan to increase the firm's deliveries to hydrogen stations if more drivers turn to fuel-cell vehicles.

"A new era of hydrogen as an energy source is dawning."

Yasuhisa Ueda / Iwatani

The Tokyo Metropolitan Government supports the move toward hydrogen. It is building hydrogen stations ahead of hosting the 2020 Olympics. Expectations are growing that fuel-cell cars will follow hybrids and electric vehicles in opening up the era of eco-friendly vehicles.

comments powered by Disqus