Yale Carden, Director of Geoexchange Australia was recently invited to speak to the Australia New Zealand Solar Energy Society (ANZSES) and industry professionals on 26 March 2008 as part of an information session on the different geothermal technologies available. Yale shared the floor with Jaan Boersma, a retired geophysicist from the University of Sydney.
The talk was well received and provided the participants with an understanding of Geoexchange as low temperature geothermal as opposed to the high temperature geothermal or ‘hot rocks’ used for energy generation.
The main differentiation between the two is how Geoexchange utilises the top 100 m of the earth’s crust for heating and cooling whereas geothermal energy typically requires drilling to depths of several thousand metres to generate electricity.
Geoexchange utilises low temperature (0-30 degrees celsius) ground conditions available in the top 100 m of the earth to provide a readily available heat source (heating) or heat sink (cooling). It is the use of the earth as a heat exchanger which provides the high efficiencies achieved by Geoexchange systems.
For further information on arranging presentations or information evenings, please contact us.