A novel total-flow geothermal power generator using Turgo turbine: Design and field tests
Journal
Renewable Energy
Journal Volume
186
Pages
562-572
Date Issued
2022
Author(s)
Abstract
This paper presents a unique design of a total-flow geothermal power generator that uses Turgo turbine and two-phase supersonic nozzles. The high-speed flashing jets are formed by high-pressure subcooled liquid from the well through the nozzles and impinge turbine blades obliquely to drive the Turgo turbine. This new generator converts geothermal power directly from the geothermal fluid without implementing any phase separator or heat exchanger, which results in a simple and easy-to-maintain system. A prototype of the total-flow geothermal power generator was built and field-tested in Yilan, Taiwan. Results show that compared to traditional Organic Rankine Cycle generators and double flash geothermal power plants, the new design has a competitive geothermal efficiency operating at moderate reservoir enthalpies. ? 2022 Elsevier Ltd
Subjects
Geothermal power generator
ORC generator
Total-flow
Turgo turbine
Two-phase supersonic nozzle
Geothermal fields
Geothermal power plants
Nozzle design
Supersonic aircraft
Turbines
Turbomachine blades
Design tests
Geothermal power
Supersonic nozzles
Turbine designs
Turgo turbines
Two phase
Rankine cycle
energy efficiency
field method
geothermal power
high pressure
instrumentation
operations technology
performance assessment
thermodynamics
turbine
Taiwan
Yilan [Taiwan]
SDGs
Type
journal article