Publicité
• There are many different designs of solar cooker/oven. They all work in a similar way, by collecting and concentrating heat rays from the Sun. The larger the collector, the more heat it collects, and the hotter the temperature
inside.
• Solar cookers/ovens work best all year round in the tropics. Here, the Sun shines strongly from overhead every day. Near the Earth's poles, the Sun is normally low in the sky and its heating effect is much weaker.
• Some solar cookers are saucer-shaped, with a shiny inner coating. Heat is concentrated into the bottom of the saucer where the food is cooked.
• Solar cookers/ovens are good for the environment because solar energy is renewable. They are also very useful in remote areas of the world, where there is no mains electricity and fuel is scarce and expensive.
• A solar concentrating power station uses a vast array of mirrors to capture and concentrate heat. The heat is used to boil water to make steam, which drives turbines, which drive electricity generators.
©2009 4M Industrial Development Limited. All rights reserved.
Publicité
