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Main Title: 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
Author(s): Zoder, Marius
Balke, Janosch
Hofmann, Mathias
Tsatsaronis, George
Type: Article
Language Code: en
Abstract: 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.
Issue Date: 30-Sep-2018
Date Available: 11-Sep-2019
DDC Class: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): simulation
object-oriented programming
energy conversion process
combined cycle gas turbine
combined heat and power
exergy analysis
simultaneous modular approach
Journal Title: Energies
Publisher: MDPI
Publisher Place: Basel
Volume: 11
Issue: 10
Article Number: 2609
Publisher DOI: 10.3390/en11102609
EISSN: 1996-1073
Appears in Collections:FG Energietechnik und Umweltschutz » Publications

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