Simulation and Exergy Analysis of Energy Conversion Processes Using a Free and Open-Source Framework—Python-Based Object-Oriented Programming for Gas- and Steam Turbine Cycles

State-of-the-art thermodynamic simulation of energy conversion processes requires proprietary software. This article is an attempt to refute this statement. Based on object-oriented programming a simulation and exergy analysis of a combined cycle gas turbine is carried out in a free and open-source...

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Bibliographic Details
Published in:Energies (Basel) Vol. 11; no. 10; p. 2609
Main Authors: Zoder, Marius, Balke, Janosch, Hofmann, Mathias, Tsatsaronis, George
Format: Journal Article
Language:English
Published: Basel MDPI AG 01.10.2018
Subjects:
Alternative energy sources
Coal-fired power plants
combined cycle gas turbine
combined heat and power
Cooling
Documentation
Efficiency
energy conversion process
Energy resources
exergy analysis
Gas turbines
Gases
Heat
Literature reviews
Natural gas
object-oriented programming
Personal computers
simulation
simultaneous modular approach
Software
Synthesis gas
Thermodynamics
Turbines
United States > US
Germany
ISSN:1996-1073, 1996-1073
Online Access:Get full text
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Summary:State-of-the-art thermodynamic simulation of energy conversion processes requires proprietary software. This article is an attempt to refute this statement. Based on object-oriented programming a simulation and exergy analysis of a combined cycle gas turbine is carried out in a free and open-source framework. Relevant basics of a thermodynamic analysis with exergy-based methods and necessary fluid property models are explained. Thermodynamic models describe the component groups of a combined heat and power system. The procedure to transform a physical model into a Python-based simulation program is shown. The article contains a solving algorithm for a precise gas turbine model with sophisticated equations of state. As an example, a system analysis of a combined cycle gas turbine with district heating is presented. Herein, the gas turbine model is validated based on literature data. The exergy analysis identifies the thermodynamic inefficiencies. The results are graphically presented in a Grassmann chart. With a sensitivity analysis a thermodynamic optimization of the district heating system is discussed. Using the exergy destruction rate in heating condensers or the overall efficiency as the objective function yields to different results.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:1996-1073
1996-1073
DOI:10.3390/en11102609