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2008-08-13 Sustainable Building: Passive Solar Design
Passive solar design involves the use of solar energy – that is, energy from the Sun – to provide a significant proportion of the heating, cooling and ventilation required by domestic dwellings, and other buildings.
2008-03-31 Geothermal Systems
Geothermal energy is generally defined, nowadays, as the available thermal, or heat, energy stored in the Earth’s crust, down to a depth of 3 miles, or so.