Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems最新文献_第5页

Performance Assessment of an Integrated Gasification Combined Cycle Under Flexible Operation 柔性运行下一体化气化联合循环性能评价

Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems Pub Date : 2018-06-11 DOI: 10.1115/GT2018-75198

S. Ravelli, A. Perdichizzi

{"title":"Performance Assessment of an Integrated Gasification Combined Cycle Under Flexible Operation","authors":"S. Ravelli, A. Perdichizzi","doi":"10.1115/GT2018-75198","DOIUrl":"https://doi.org/10.1115/GT2018-75198","url":null,"abstract":"In this paper a simulation tool (Thermoflex®) has been setup to model an entire Integrated Gasification Combined Cycle (IGCC) on the basis of the report entitled “Cost and Performance of PC and IGCC Plants for a Range of Carbon dioxide Capture” by DOE/NETL [1]. The investigated layout has no water-gas-shift (WGS) reactor and does not allow for any CO2 capture. Two gasification islands are included, each of which consists of Air Separation Unit (ASU), GEE radiant-only gasifier, quench and syngas scrubber as well as syngas cleanup. Two advanced GE’s F-class gas turbines (2 × 232 MW), coupled with two heat recovery steam generators and one steam turbine (276 MW) constitute the power block.\u0000 In the IGCC simulation, the base model of the GE 7F.05 gas turbine has been adapted to burn syngas. Mass and energy balances were carefully computed on design condition to validate the proposed modelling procedure against the IGCC performance data contained in the above mentioned report: the net power output of 622 MW was underestimated by about 5% whereas the net electric efficiency was slightly overpredicted. The off-design behavior of the syngas turbine was then simulated as dependent on ambient temperature and partial load, in preparation for modelling flexible operation of the whole power plant. The variation in IGCC net efficiency and power output was assessed in a load following operational strategy, thus reducing the load factor and varying the number and slope of ramps in a typical day. The IGCC net efficiency goes down from 42.5% to 32.8% when the load is reduced from 100% to 40% of the design rate.","PeriodicalId":131179,"journal":{"name":"Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131357899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Influence of Reactor Pressure on the Primary Jet Breakup of High-Viscosity Fuels: Basic Research for Simulation-Assisted Design of Low-Grade Fuel Burner 反应器压力对高粘度燃料一次射流破碎的影响——低品位燃料燃烧器模拟辅助设计的基础研究

Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems Pub Date : 2018-06-11 DOI: 10.1115/GT2018-75950

T. Müller, Kathrin Kadel, P. Habisreuther, D. Trimis, N. Zarzalis, A. Sänger, T. Jakobs, T. Kolb

{"title":"Influence of Reactor Pressure on the Primary Jet Breakup of High-Viscosity Fuels: Basic Research for Simulation-Assisted Design of Low-Grade Fuel Burner","authors":"T. Müller, Kathrin Kadel, P. Habisreuther, D. Trimis, N. Zarzalis, A. Sänger, T. Jakobs, T. Kolb","doi":"10.1115/GT2018-75950","DOIUrl":"https://doi.org/10.1115/GT2018-75950","url":null,"abstract":"Detail investigations on the primary breakup of high-viscosity liquids using external-mixing twin-fluid nozzles at increased system pressure are scarce. Therefore, the research work of the present study is focused on the investigation of pressure influence (1 - 11 bar (abs)) on the primary breakup by numerical simulation based on a previously studied nozzle [Müller et al., ASME Turbo Expo 2016, GT2016-56371]. The pressure influence was investigated for two liquids applying a wide range of viscosities (100 mPa s; 400 mPa s) and two atomizing air velocities (58 m/s; 74 m/s). To describe the disintegration process of the fluids, characteristic features like liquid jet morphology, breakup length and breakup frequency were evaluated.\u0000 The primary breakup was investigated using the open source CFD software OpenFOAM. To gather the morphology of the primary breakup and the flow field characteristics compressible large eddy simulations (LES) were performed and the movement of the gas-liquid interface was captured by means of the Volume of Fluid-Method (VOF).\u0000 The conducted simulations showed good agreement with experimental results with respect to the characteristic features (e.g. morphology and breakup length) and revealed a decrease of the breakup length with increasing ambient pressure for a constant liquid mass flow and atomizing air velocity. Moreover, those findings will contribute to a better understanding of the physics of the breakup of high-viscosity liquid jets and as well to create an experimentally validated CFD based tool for future burner development and optimization.","PeriodicalId":131179,"journal":{"name":"Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132153603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Performance Assessment of a Micro Gas Turbine Cycle With Exhaust Gas Recirculation Fueled by Biogas for Post-Combustion Carbon Capture Application 以沼气为燃料的废气再循环微型燃气轮机循环在燃烧后碳捕集中的性能评估

Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems Pub Date : 2018-06-11 DOI: 10.1115/GT2018-77084

Homam Nikpey Somehsaraei, Mohammad Mansouri Majoumerd, M. Assadi

{"title":"Performance Assessment of a Micro Gas Turbine Cycle With Exhaust Gas Recirculation Fueled by Biogas for Post-Combustion Carbon Capture Application","authors":"Homam Nikpey Somehsaraei, Mohammad Mansouri Majoumerd, M. Assadi","doi":"10.1115/GT2018-77084","DOIUrl":"https://doi.org/10.1115/GT2018-77084","url":null,"abstract":"As a renewable energy source, biogas produced from anaerobic digestion seems to play an important role in the energy market. Unlike wind and solar, which are intermittent, gas turbines fueled by biogas provide dispatchable renewable energy that can be ramped up and down to match the demand. If post-combustion carbon capture systems are implemented, they can also result in negative CO2 emissions. However, one of the major challenges here is the energy needed for CO2 chemical absorption in post-combustion capture, which is closely related to the concentration of CO2 in the exhaust gas upstream of the capture unit. This paper presents an evaluation of the effects of biogas and exhaust gas recirculation use on the performance of the gas turbine cycle for post-combustion CO2 capture application. The study is based on a combined heat and power micro gas turbine, Turbec T100, delivering 100kWe. The thermodynamic model of the gas turbine has been validated against experimental data obtained from test facilities in Norway and the United Kingdom. Based on the validated model, performance calculations for the baseline micro gas turbine (fueled by natural gas), biogas-fired cases and the cycle with exhaust gas recirculation have been carried out at various operational conditions and compared together. A wide range of biogas composition with varying methane content was assumed for this study. Necessary minor modifications to fuel valves and compressor were assumed to allow the engine operation with different biogas composition. The methodology and results are fully discussed in this paper.","PeriodicalId":131179,"journal":{"name":"Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132213419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Turbocharger-Based Hybrid Systems: Modeling and Validation of a Free Spool Subject to Compressor Surge 基于涡轮增压器的混合动力系统:受压气机喘振影响的自由阀芯建模与验证

Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems Pub Date : 2018-06-11 DOI: 10.1115/GT2018-76754

Alessio Abrassi, A. Traverso, L. Ferrari

{"title":"Turbocharger-Based Hybrid Systems: Modeling and Validation of a Free Spool Subject to Compressor Surge","authors":"Alessio Abrassi, A. Traverso, L. Ferrari","doi":"10.1115/GT2018-76754","DOIUrl":"https://doi.org/10.1115/GT2018-76754","url":null,"abstract":"Compressor surge is one of the main problem that may affect fuel cell gas turbine hybrid systems, because of the energy stored in the volume containing the high temperature pressurized fuel cell stack. The problem becomes even more crucial because in such kind of system, the fuel cell is the most sensitive and costly component that has to be preserved by abrupt pressure changes.\u0000 In order to determine the behavior of a dynamic compressor in its whole range of operating conditions, a calculation model was implemented in TRANSEO, a software tool for transient and dynamic analysis of microturbine and fuel cell based-cycles (based on Matlab-Simulink environment). The modeling procedure has been derived from the Greitzer’s 1976 nonlinear dynamic approach; the resulting T-RIG1 model predicts the transient response of a compression system and is able to simulate both normal and instable transient conditions. Several investigations have been done in order to characterize the impact of different parameters and configurations on the system response. The validation, in the frequency domain, was performed comparing calculations with experimental data measured from a dedicated test rig, where a small size turbocharger has been operated in stable and unstable conditions. In particular, the present work demonstrates the capability of the T-RIG1 model to simulate a free shaft turbocharger performance and instability, with the future purpose to develop feasible strategies for surge detection and recovery, applicable to turbocharger-based hybrid systems.","PeriodicalId":131179,"journal":{"name":"Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134086958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Quantifying Uncertainty of Gas Turbine Engine Models Generated Using Inverse Solution Methods 用反解法对燃气轮机模型的不确定性进行量化

Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems Pub Date : 2018-06-11 DOI: 10.1115/GT2018-77052

Craig R. Nolen, J. Delimont

{"title":"Quantifying Uncertainty of Gas Turbine Engine Models Generated Using Inverse Solution Methods","authors":"Craig R. Nolen, J. Delimont","doi":"10.1115/GT2018-77052","DOIUrl":"https://doi.org/10.1115/GT2018-77052","url":null,"abstract":"In the current economic and political environment, there is a push for gas turbine operators to achieve higher operating efficiencies, which in turn, reduces emissions and fuel consumption. As these owners and operators seek to increase the efficiency of their machines, they are increasingly turning to physics-based performance modeling. This allows the end user to analyze machine performance, plan for performance upgrades, and evaluate use cases and operating conditions not originally envisioned by the original equipment manufacturers (OEMs). For owners/operators who do not have access to physics-based models provided by the hardware OEM or would like to evaluate modifications to legacy hardware, physics-based models may be developed using measured turbine performance data and high-level knowledge of the turbine architecture. In previous work, a physics-based performance model of an industrial gas turbine engine was created using measured plant operating data and an inverse solution method to allow off-design exploration of its performance. However, this model’s uncertainty was unknown, and knowledge of uncertainty is crucial to understanding a model’s reliability. In the present work, the model’s uncertainty in predicted performance at a particular operating point is investigated using statistical methods. Polynomial regressions of standard deviation are used alongside the performance regressions to describe the uncertainty at various operating points. These regressions are also used to visualize the variation of uncertainty across the performance map. Such knowledge of uncertainty can aid gas turbine operators in decision making with regard to the risks of off-design operation or equipment modifications.","PeriodicalId":131179,"journal":{"name":"Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131371461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Detailed Techno-Economic Analysis of Gas Turbines Applied to CSP Power Plants With Central Receiver 中央集热电厂燃气轮机的技术经济分析

Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems Pub Date : 2018-06-11 DOI: 10.1115/gt2018-77090

Manuel Martín, D. Sánchez

引用次数: 0

Performance Improvement of a Micro Gas Turbine Adopting Exhaust Gas Recirculation for CO2 Capture by Integration With Liquid Air Energy Storage 采用废气再循环与液气储能相结合的CO2捕集微型燃气轮机性能改进

Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems Pub Date : 2018-06-11 DOI: 10.1115/GT2018-75901

Min Kim, D. Won, T. Kim

{"title":"Performance Improvement of a Micro Gas Turbine Adopting Exhaust Gas Recirculation for CO2 Capture by Integration With Liquid Air Energy Storage","authors":"Min Kim, D. Won, T. Kim","doi":"10.1115/GT2018-75901","DOIUrl":"https://doi.org/10.1115/GT2018-75901","url":null,"abstract":"Exhaust gas recirculation (EGR) can be applied to a micro gas turbine (MGT) for the efficient removal of CO2 using post-combustion capture. The EGR increases the CO2 concentration of the exhaust gas for the capture process, which augments the capture rate. However, the performance penalty of the MGTs caused by the rise in the compressor inlet temperature due to the EGR is a drawback. In this research, we investigated the integration of an MGT, adopting EGR with liquid air energy storage (LAES), an emerging energy storage technology. LAES stores electric energy from renewables or the power grid in the form of cryogenic liquid air. The liquefied air is pressurized and regasified to generate electricity during peak demand hours. In our proposed system, a portion of the cryogenic air is injected into the MGT’s compressor inlet. The purpose of the injection is twofold. Firstly, it decreases the compressor inlet air temperature, which enhances the MGT performance, especially the power output. Secondly, it increases the carbon dioxide composition of the exhaust gas, which enhances the carbon capture performance. An MGT system, equipped with a post-combustion capture and integrated with the cryogenic air injection, was analyzed. The analysis shows that the system power, system efficiency, and CO2 capture rate were improved, with the heat duty of the carbon capture process reduced in accordance with the increase in cryogenic flow rate, as expected. Moreover, the heat duty of the carbon capture process decreased significantly due to the increase in temperature and O2 concentration in the cryogenic air.","PeriodicalId":131179,"journal":{"name":"Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117015025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

HRSG Duct Firing Revisited HRSG管道发射重访

Volume 3: Coal, Biomass, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems Pub Date : 2018-06-11 DOI: 10.1115/GT2018-75768

S. C. Gülen

引用次数: 0