Wind Turbines–Selecting A Site For Optimum Energy

Wind turbines are the piece of alternative technology hardware that seems to create the most enthusiasm in their designers and users. Part of their appeal is visual: they move in response to the wind, unlike solar collectors which lie quietly absorbing heat from the sun (if you are lucky) or insulation which you cannot even … Read more

Calculating The Energy Gained From Solar Heating

We can work out the benefits of solar heating from work carried out by several government agencies. The Building Research Establishment estimates that the average household uses 170 litres of hot water daily at a temperature of 55°C. This represents a useful energy demand of about 3350kWh per year. Another BRE estimate gives the consumption … Read more