المستخلص: |
Geothermal energy is promised source of renewable and sustainable energy for production of electricity and offer a wide variety of choices in terms of direct heat applications such as heating and cooling homes, warming swimming pools, and agriculture applications. Two approach are used in production of geothermal energy, the first one is called power plants, and second one is called heat pump. The power plants approach based on three different techniques are dry steam power plants, flash steam power plants, and binary cycle power plants. Heat pump used for cooling homes in summer and heat it in winter. Moreover, this paper summarized, historical background of development geothermal energy, main technologies used in this field, installed geothermal electric capacity for two period are 2007 and 2010 for 24 countries. Finally, results made during the ‘reporting period’. In an effort to keep the search clearly arranged and within the given space constrains, some details are left out.
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