Full content General issues Air protection Water protection Ash handling Complex technologies Physical impacts Advanced technologies Energy saving Renewable energy OSIecopower / English / Renewable energy / 8.1. Geothermal power plants (GPPs) 8.1. Geothermal power plants (GPPs) Content8.1.1. Geothermal power plants at the fields of steam-water mixes with back pressure turbines8.1.2. Geothermal power plants at the fields of steam-water mixes with condensing pressure turbines8.1.3. Geothermal power plants at the fields of steam-water mixes or geothermal brines with condensing turbines and single –or repeated expansion of the geothermal fluid8.1.4. In order to avoid the scales, which occur at evaporation of geothermal brines in schemes with expanders, a scheme using volatile working substances is applied8.1.5. Combined cycle geothermal power plants with steam turbine in the upper cycle and volatile working substance in the lower cycle8.1.6. Overview of development of GPPs and heat supply systems as of 20148.1.72 Item