Plate Heat Exchanger for deep geothermal applications

Most important deep geothermal applications are district heating as well as electricity production by means of a Kalina-Cycle or an ORC-Cycle. Normally, geothermal reservoir temperatures are limited to 160 degrees C or even lower. In order to realize never -the -less an economic as well as technical sufficient use of geothermal energy it is mandatory to integrate high efficient heat exchangers. Following article describes why plate heat exchangers are the first choice for such applications. In addition it is explained which plate heat exchanger type is best depending on the different geothermal application. Last but not least plate material selection is discussed in order to achieve a sufficient corrosion resistance against often corrosive geothermal water.