Eco Factor: Solar-powered street lights from Sanyo.
Sanyo has launched solar-powered streetlights at the Eco-Products 2008 fair at the Tokyo Big Sight in Japan. The energy-efficient streetlights come with LED bulbs to make the energy captured during the day last longer. Sanyo’s solar streetlights stand apart from the rest due to the use of lithium-ion secondary batteries, which replace traditional lead batteries that are not as efficient.
Apart from the added ecofriendliness, the lithium-ion batteries also come in a package just half the size of a lead counterpart. This small size has enabled the company to reduce the size of the final product and also cut down on their installation costs.
The Dark Side:
The lithium-ion batteries are better in terms of capacity and efficiency, but the cost of these batteries is much more than the lead-acid counterparts, which may keep these lights from being adopted globally.
Via: GoodCleanTech/TechOn
Japan’s alloy making is splendid!
Multi eco steel is developed for general industrial use by Hitachi Metals.
In general,relationship between machinability and durablity is trade-off in material science.But big break though of new alloy ”SLD MAGIC” was achived by multi axial alloy design of Hitachi technology.
It sounds great.big news.
In nipkitoks,investigation of this material must be started.
I know this steel.Galling resistance is very beautiful in my works.But I cant get raw material of this steel in United States.
it looks great, thank for the post
