Power generation through an organic fluid trilateral flash cycle using a simple reaction turbine utilising low-grade thermal sources

Oreijah, M 2014, Power generation through an organic fluid trilateral flash cycle using a simple reaction turbine utilising low-grade thermal sources, Doctor of Philosophy (PhD), Aerospace, Mechanical and Manufacturing Engineering, RMIT University.


Document type: Thesis
Collection: Theses

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Title Power generation through an organic fluid trilateral flash cycle using a simple reaction turbine utilising low-grade thermal sources
Author(s) Oreijah, M
Year 2014
Abstract Trilateral Flash Cycle (TFC) has the capability to extract heat more efficiently from hydrothermal resources which can directly increase power production and reduce green gas emissions. In this research, a mathematical model was developed for the simple reaction turbine to in order to perform parametric studies including predicting the output powers and efficiencies at different rotational speeds. In addition, this mathematical model is able to determine the optimal design parameters for the turbine under specific operating conditions. A laboratory scale experiment was carried out on the reaction turbine with the TFC as a binary power system in order to validate the developed mathematical model and to ensure the reliability of the mathematical results. Using of a reaction turbine is a novel idea to be engineered in the binary system with the TFC.

Employing a reaction turbine in a binary cycle can improve the heat extraction efficiency in geothermal applications. This system can also increase the efficiency of power generation from other low grade heat sources. In this research, the TFC as a thermodynamic cycle and a reaction turbine for power extraction are presented as a binary power system for the first time. The TFC has the capability to recover more thermal heat from the heat source. This can increase the power production from the binary power system. However, there is the associated need to convert the increased thermal energy from the TFC by using an appropriate expander. The proposed expander in this research is the reaction turbine. This turbine enables the TFC in a binary power system to produce more power than other expanders.
Degree Doctor of Philosophy (PhD)
Institution RMIT University
School, Department or Centre Aerospace, Mechanical and Manufacturing Engineering
Keyword(s) Power generation
Trilateral flash cycl
Low-grade thermal sources
Reaction turbine
Renewable energy
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Created: Wed, 24 Jun 2015, 14:05:35 EST by Denise Paciocco
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