scholarly journals Development of Semiclosed Cycle Gas Turbine for Oxy-Fuel IGCC Power Generation with CO2 Capture

10.5772/54406 ◽  
2013 ◽  
Author(s):  
Takeharu Hasegawa
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Co2 Capture

Use of Low/Mid-Temperature Solar Heat for Thermochemical Upgrading of Energy, Part II: A Novel Zero-Emissions Design (ZE-SOLRGT) of the Solar Chemically-Recuperated Gas-Turbine Power Generation System (SOLRGT) guided by its Exergy Analysis

2012 ◽  
Vol 134 (7) ◽  
Author(s):  
Na Zhang ◽  
Noam Lior ◽  
Chending Luo
Keyword(s):  
Power Generation ◽  
Water Vapor ◽  
Gas Turbine ◽  
Co2 Capture ◽  
Exergy Analysis ◽  
Efficiency Improvement ◽  
Generation System ◽  
Solar Heat ◽  
Energy Part ◽  
Power Generation System

This paper adds an exergy analysis of the novel SOLRGT solar-assisted power generation system proposed and described in detail in Part I of this study (Zhang and Lior, 2012, “Use of Low/Mid-Temperature Solar Heat for Thermochemical Upgrading of Energy, Part I: Application to a Novel Chemically-Recuperated Gas-Turbine Power Generation (SOLRGT) System,” ASME J. Eng. Gas Turbines Power, Accepted. SOLRGT is an intercooled chemically recuperated gas turbine cycle, in which solar thermal energy collected at about 220 °C is first transformed into the latent heat of water vapor supplied to a reformer, and then via the reforming reactions to the produced syngas chemical exergy. This integration of this concept of indirect thermochemical upgrading of low/mid temperature solar heat has resulted in a high efficiency novel hybrid power generation system. In Part I it was shown that the solar-driven steam production helps improve both the chemical and thermal recuperation in the system, with both processes contributing to the overall efficiency improvement of about 5.6%-points above that of a comparable intercooled CRGT system without solar assist, and nearly 20% reduction of CO2 emissions. An economic analysis of SOLRGT predicted that the generated electricity cost by the system is about 0.06 $/kWh, and the payback period about 10.7 years (including two years of construction). The exergy analysis of SOLRGT in this (Part II) paper identified that the main potentials for efficiency improvement is in the combustion, the turbine and compressors, and in the flue gas due to its large water vapor content. Guided by this, an improved solar-assisted zero-emissions power generation system configuration with oxy-fuel combustion and CO2 capture, ZE-SOLRGT, is hereby proposed, in which the exergy losses associated with combustion and heat dumping to the environment are reduced significantly. The analysis predicts that this novel system with an 18% solar heat input share has a thermal efficiency of 50.7% and exergy efficiency of 53%, with ∼100% CO2 capture.

Numerical Study of Ammonia/O2 Fired Semiclosed Cycle Gas Turbine for Oxy-Fuel IGCC Power Generation with CO2 Capture

2021 ◽  
Author(s):  
Takeharu Hasegawa
Keyword(s):  
Power Generation ◽  
Renewable Energy ◽  
Power Plant ◽  
Gas Turbine ◽  
Co2 Capture ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Energy Generation ◽  
Thermal Power Generation ◽  
Renewable Energy Generation

Abstract Europe and the United States, in particular, promote the deregulation of the electric power industry in favor of renewable energy generation. With an increase in renewable energy generation, thermal power generation has been switched to standby power. Ammonia, one of the storage and transport media for H2, is produced in a highly efficient oxyfuel IGCC (integrated coal gasification combined cycle) system with CO2 capture, for the future hydrogen-using society. Using ammonia as an industrial raw material, agricultural fertilizer, and transportation fuel, energy system can be established by combining renewable energy and thermal power generation. Therefore, it is possible to simultaneously construct a thermal power supply system suitable for backup power source owing to the fluctuation of the renewable power generation and to realize improvement of availability of the thermal power plant and the load-leveling. It will be an incentive to build a future zero-emission thermal power plant. In this study, an oxy-fuel IGCC power generation co-produced with ammonia and CO2 capture is proposed. Furthermore, the features and challenges of a gas turbine that fuels CO2-free NH3 are investigated. In particular, the combustion exhaust characteristics of ammonia/oxygen fired semiclosed cycle gas turbine combustor in comparison with those of the conventional fuels are clarified through a kinetic analysis.

scholarly journals Combined heat/cooling and power generation using hybrid micro gas turbine in a CST plant for a residential off-grid application

2020 ◽  
Author(s):  
Francesco Rovense ◽  
Miguel Ángel Reyes-Belmonte ◽  
Manuel Romero ◽  
José González-Aguilar
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Micro Gas Turbine ◽  
Grid Application

Modularized, Combined LM2500 PE and Plus Package for Power Generation and Mechanical Drive

1997 ◽  
Author(s):  
Knuth Jahr
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Design Concept ◽  
Auxiliary System ◽  
System Concept

This paper presents the Kværner design concept for an LM2500 Gas Turbine Package, with combined engine interfaces for both the LM2500 PE and the LM2500 Plus. The paper also presents the Kværner Modularized Auxiliary System concept, where the lube oil module and the fuel modules are located in separate compartments integrated in the turbine skid, protected from soak-back heat and blade-out conditions.

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