Results > Posts Tagged With > Electricity

How to Build a Wind Generator at Home

Find out how to build a wind generator so you can regain control of your power supply. With electricity prices increasing and fossil fuel supplies being imported from unstable regions, now is the time to insulate yourself from potential supply problems. Building a wind generator is easier than you think and it could save a large proportion of your monthly electricity bill.
In the West we’ve become rather too comfortable with our high-resource living. Almost everything we use at home needs electricity.  It’s silent and convenient.  Can you imagine what it would be like to live without though?
Could you survive without air conditioning?
Or with no TV?
How about no hot water or heating?
Even if you use gas …

Read More » Comments Off

Effective solar cells and sensitive bioanalysis

The efficiency factor of solar cells is crucial for the success of generating electricity from sunlight. Systems in which light is concentrated 400-fold through lenses onto solar cells are proving to be particularly advantageous.
This concentrator technology enables expensive semi-conductor material to be replaced with cheaper lens systems, and greater efficiency to be achieved. In his thesis, physicist Marc Steiner from the Fraunhofer Institute for Solar Energy Systems ISE in Freiburg presented a way of increasing the efficiency of these concentrator solar cells even more.
The contacting of the semi-conductor layers plays a crucial role here, and Marc Steiner’s new simulation program optimizes the structure and configuration of the metallic contact fingers. These calculations yielded unprecedented efficiency …

Read More » Comments Off