How Geothermal Power Plants Work - Engineering Diagram Explained #118137 (License: Personal Use)

This educational diagram visualizes a binary-cycle geothermal power plant, where cold water is pumped down 3-4 km into hot sedimentary layers above a granite heat source (150-200°C). The heated fluid returns via a second pipe to a surface heat exchanger, transferring thermal energy to a secondary working fluid that drives a turbine in the power plant. Insulating sedimentary rocks help retain heat within the system.

Used on educational or renewable energy web pages to explain geothermal technology to students, engineers, or policy makers; matches user intent for understanding clean energy infrastructure and subsurface engineering.