Engineers from Tomsk Polytechnic University have designed a 25 kW geothermal power plant (GeoPP) prototype, and conducted the first tests of the prototype. TPU’s GeoPP employs an organic Rankine cycle, enabling it to function at reduced temperatures. Prospective applications of such plants include power and heat supply. The project is supported by the Priority 2030 program of the Russian Ministry of Science and Higher Education.
The approach advocated by TPU entails the development of binary GeoPPs, underpinned by the organic Rankine cycle. The Rankine cycle constitutes a thermodynamic cycle that involves the conversion of heat into work through the agency of a specific working body. Depending on the parameters of the heat source, hydrocarbons, silicone oils, or refrigerants can act as working bodies.
The GeoPP prototype has been installed at Tomsk Polytechnic University, and initial full-scale launches have been conducted using a real physical model of a geothermal well.
The GeoPP is composed of multiple modules, including a heater unit, an evaporator, a condenser, a screw expander, and a generator. It is equipped with essential measuring equipment and a control system, enabling remote control and monitoring. The prototype was constructed using domestic components.