The Effect of Expansion-Ratio Limitations on Positive-Displacement, Total-Flow Geothermal Power Systems
- Key words
- Power Generation; USA; Massachusetts; Steam Turbines; Thermodynamics; Turbines; Operating Designs; Enthalpy; Efficiency; Temperature; Wellhead
- Conference
- Geothermal Resources Council Transactions
- Year
- 1982
- Session
- Power plant design and operation; Flash steam power generati
- Language
- English
Abstract
Combined steam turbine/positive displacement engine (PDE) geothermal power systems are analyzed thermodynamically and compared with optimized reference flash steam plants. Three different configurations of combined systems are considered. Treated separately are the cases of self flowing and pumped wells. Two strategies are investigated that help overcome the inherent expansion ratio limitations of PDE's; pre-flashing and pre-mixing Parametrically obtained results show the required minimum PDE efficiency for the combined system to match the reference plant for various sets of design conditions.
Copyright 1982, Geothermal Resources Council. Readers who download papers from this site should honour the copyright of the original authors, and may not copy or distribute the work further without the permission of the original publisher.