Energy Crisis: Where’s The Energy Coming From?

World energy consumption is increasing by about 4% a year, or doubling every 15 years. Petroleum consumption is doubling every 10 years or so. Traditional sources of this energy cannot maintain this rate for very much longer. We shall quite simply use up all our available resources. The argument tends to hinge, therefore, around the … Read more

Building Efficient Solar Panels For A Solar Water Heating System

One way of making a solar water heating system is to use solar panels: these are small solar collectors, each in a waterproof, well insulated box which can be mounted anywhere convenient and connected to a hot water cylinder. Commercial solar panels have cases made of aluminium or glass fibre which will not rot or … Read more