<p>Geothermal power is extracted from heat stored in the earth. This paper discusses the use of geothermal energy in our electrical power systems and potential development in Central Java. Gedongsongo surface manifestations of the Ungaran geothermal prospect in Central Java have high temperature properties, (72 to 87) ºC, pH 2 to pH 6 and 770 g/kg of chloride. Geothermal power plant is very compatible built in Gedongsongo. At present, the development of geothermal resources as renewable energy have to be primarily focused on utilization of ground source heat pumps which can make good use of the enormous low temperature geothermal resources. </p><p><strong>Keywords</strong>: Central Java; Geothermal; renewable energy</p>
Thermodynamic evaluation and comparison of direct geothermal power systems and their expanders
