Use of Geothermal Exchangers for Thermoaccumulation of the Energy Generated by Climatizers Activated by Photovoltaic Sources

The use of air conditioning is growing up very much in Brazil and in the world in general. That is no longer a luxury, but a necessity, though they have heavy impacts on the consumption of electricity. The alignment between the peak thermal load and the highest solar incidence of solar energy leads the scientific community to search for machines powered by this type of energy. Energy costs are higher when the solar energy is decreasing so recommending a more powerful storage of energy. Regarding this point of view, soil is one of the oldest, universal and most extensive form of thermal energy storage. This paper shows how thermal energy storage can be used to provide air conditioning at very low costs. A simple technology is dicussed showing that it is possible to store energy underground and recover it in a very efficient way to provide thermal comfort.