Geothermal heating and cooling systems are a viable alternative to traditional HVAC - Geothermal Systems, Renewable Energy, Hvac, Energy Efficiency, Energy Star, Heat-Recovery Systems, Solar Heating, Modular Building, Building Performance, Heating, Hydronics, Pumps, Return On Investment, Underground Construction, Water Heaters, High-Performance Building, Residential Projects, Water Conservation, Insulation, Government Projects - EcoBuilding Pulse
PASSIVE COOLING A cross-section of a home with a solar chimney is shown. The solar chimney draws replacement air from the cool side of the house. Solar radiation absorbed by a metal absorber with a black selective coating causes high temperatures in the chimney, increasing updraft. Hot air exits the chimney through a rotating turbine at the top. The house-facing side of the chimney is insulated.