ASME 2020 Power Conference最新文献_第3页

Online Adaptive Control Tuning in a Gas Turbine Hybrid System 燃气轮机混合动力系统在线自适应控制整定

ASME 2020 Power Conference Pub Date : 2020-08-04 DOI: 10.1115/power2020-16534

Harry Bonilla-Alvarado, Bernardo Restrepo, Paolo Pezzini, L. Shadle, D. Tucker, K. Bryden

{"title":"Online Adaptive Control Tuning in a Gas Turbine Hybrid System","authors":"Harry Bonilla-Alvarado, Bernardo Restrepo, Paolo Pezzini, L. Shadle, D. Tucker, K. Bryden","doi":"10.1115/power2020-16534","DOIUrl":"https://doi.org/10.1115/power2020-16534","url":null,"abstract":"\u0000 Proportional integral and derivative (PID) controllers are the most popular technique used in the power plant industry for process automation. However, the performance of these controllers may be affected due to variations in the power plant operating conditions, such as between startup, shutdown, and baseload/part-load operation. To maintain the desired performance over the full range of operations, PID controllers are always retuned in most power plants. During this retuning process, the operator takes control of the manipulated variable to perform a standard procedure based on a bump test. This procedure is generally performed to characterize the relationship between the manipulated variable and the process variable at each operating condition.\u0000 After the bump test, the operator generally applies basic guidelines to assign new parameters to the PID controller. In this paper, the Model Reference Adaptive Controller (MRAC) control technique was implemented to update the PID controller parameters online without performing the bump test procedure. This approach allows updating the controller response on-the-fly while the power plant is running and without using the standard procedure based on a bump test. The MRAC was developed and demonstrated in the gas turbine hybrid cycle at the National Energy Technology Laboratory (NETL) to retune a critically damped mass flow PID controller into an over-damped response. Results showed stable performance during mass flow setpoint steps and also a stable update of the controller parameters.","PeriodicalId":282703,"journal":{"name":"ASME 2020 Power Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131612497","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

Modeling and Analysis of a Thermal Management System With Thermoelectric Cooling for the Application in Li-Ion Batteries 锂离子电池热电冷却热管理系统的建模与分析

ASME 2020 Power Conference Pub Date : 2020-08-04 DOI: 10.1115/power2020-16769

A. Mostafavi, A. Jain

{"title":"Modeling and Analysis of a Thermal Management System With Thermoelectric Cooling for the Application in Li-Ion Batteries","authors":"A. Mostafavi, A. Jain","doi":"10.1115/power2020-16769","DOIUrl":"https://doi.org/10.1115/power2020-16769","url":null,"abstract":"\u0000 Lithium-ion (Li-ion) batteries have recently become the main source of power in portable devices due to advantages such as high energy density. However, Li-ion cells operate well only in a specific temperature range. Degraded preperformance is a consequence of low temperature operation, and potential fire risk originates from thermal runaway at elevated temperatures. Efficient thermal management of Li-ion cells and battery packs is essential to ensure safe and durable performance in wide temperature range. Thermoelectric coolers (TECs), which have been used widely for electronics cooling may also be appropriate for battery cooling due to size compactness, working with direct current. This paper presents experimental characterization of cooling of a prismatic test cell with TECs on two sides. Cooling effect of TEC on the cell core and surface temperatures is investigated at different TEC power rates. Results show core and surface temperatures of the test cell decrease significantly. The obtained results show that by applying the TEC, a temperature drop of 10 °C was achieved for 0.75A TEC current. The optimum TEC current can be selected based on the application. In addition, numerical simulations are carried out to compare with experimental measurements. Heating effect of mounted TECs can be easily achieved just by changing current direction. Experimental results reveal TECs can heat up a cell in cold climate shortly. In addition, thermo electric module may also offer insulating effect in cold climate. Results presented in this paper illustrate potential application of thermoelectric cooling for thermal management of Li-ion cells.","PeriodicalId":282703,"journal":{"name":"ASME 2020 Power Conference","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133950487","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 Novel Coal-Fired CHP System Integrated With Steam Ejectors to Realize Heat-Power Decoupling and Energy Saving 结合蒸汽喷射器的新型燃煤热电联产系统实现热电解耦和节能

ASME 2020 Power Conference Pub Date : 2020-08-04 DOI: 10.1115/power2020-16467

Liu Miaomiao, Ming Liu, Shuran Zhao, Gege Song, Junjie Yan

{"title":"A Novel Coal-Fired CHP System Integrated With Steam Ejectors to Realize Heat-Power Decoupling and Energy Saving","authors":"Liu Miaomiao, Ming Liu, Shuran Zhao, Gege Song, Junjie Yan","doi":"10.1115/power2020-16467","DOIUrl":"https://doi.org/10.1115/power2020-16467","url":null,"abstract":"\u0000 Traditional combined heat and power (CHP) units should run in the heat-controlled mode. The adjustable range of power load is restricted by the heat load, and the minimum power load increases with the heat load. Because of high penetration of intermittent renewable power, operational flexibility of CHP units is highly required. It is necessary to adopt some technical solutions to realize heat-power decoupling for CHP units. To find a heat-power decoupling method with low investment and high energy efficiency, the steam ejectors, simple in structure and low in cost, are applied to design a novel heat-power decoupling system in this study. Steam ejectors can recover the waste heat of exhaust steam of steam turbines. Therefore, the integration of steam ejector may realize heat-power decoupling and energy saving simultaneously. Three heat-power decoupling systems with steam ejectors are designed. The heat-power decoupling performance and energy consumption characteristics of these systems are investigated with a reference 330 MW coal-fired CHP unit. Results show that all three modified systems can realize heat-power decoupling. The heat-power decoupling performance of improved system III is the best, and improved system I has the least coal consumption rate for power generation.","PeriodicalId":282703,"journal":{"name":"ASME 2020 Power Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129852108","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

Thermodynamic Analysis on a Heat-Power Decoupling System Integrated With Absorption Heat Pump 吸收式热泵热力耦合系统的热力学分析

ASME 2020 Power Conference Pub Date : 2020-08-04 DOI: 10.1115/power2020-16309

Liyuan Wang, Ming Liu, Yue Fu, Jiping Liu, Junjie Yan

{"title":"Thermodynamic Analysis on a Heat-Power Decoupling System Integrated With Absorption Heat Pump","authors":"Liyuan Wang, Ming Liu, Yue Fu, Jiping Liu, Junjie Yan","doi":"10.1115/power2020-16309","DOIUrl":"https://doi.org/10.1115/power2020-16309","url":null,"abstract":"\u0000 Because of the continuous expanding of the district heating, the heating load of combined heat and power (CHP) plants increases year by year. The minimum power load of CHP plant increases with the heating load due to the heat-power coupling mechanism. Therefore, heat-power decoupling is necessary to improve the operation flexibility for CHP units. Integrating the absorption heat pump (AHP) is an effective method to realize the heat-power decoupling. In this study, a 330MW CHP unit model and AHP model have been developed and validated. The performance of the heat-power decoupling and energy saving performance has been investigated by comparing the thermodynamic performance indicators. Results show that, the proposed system can increase the maximum heating load and decrease the power generation when the primary network return temperature is decreased. When the heating steam extraction is kept constant, with the increase of the primary network return water temperature, the heat generation efficiency and the standard coal consumption rate of heating increases, the coal consumption rate of power generation and the heating efficiency decreases. And the primary network return water temperature increases from 40 °C to 70 °C, the coal consumption rate of power generation decreases by 4.3 g/kWh, and the coal consumption rate of heating increases by 0.67 kg/GJ.","PeriodicalId":282703,"journal":{"name":"ASME 2020 Power Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114659383","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

A Review of Cryogenics Applications for Power and Energy 低温在电力和能源中的应用综述

ASME 2020 Power Conference Pub Date : 2020-08-04 DOI: 10.1115/power2020-16911

W. Rehman, M. Farhan, Fatima Rehman

{"title":"A Review of Cryogenics Applications for Power and Energy","authors":"W. Rehman, M. Farhan, Fatima Rehman","doi":"10.1115/power2020-16911","DOIUrl":"https://doi.org/10.1115/power2020-16911","url":null,"abstract":"\u0000 Cryogenic technologies use cryogens such as natural gas, nitrogen, helium, hydrogen, argon, and oxygen as main working fluids. These cryogenic technologies and cryogens are emerging in the fields of energy storage, power generation, and eco-friendly fuels. Recently, researchers have proposed to integrate cryogenic systems with power generation systems including Nuclear power plants and wind turbines, to store surplus energy during the off-peak hours and use it during peak hours. The basic idea is to convert air or some other cryogen into liquid during the off-peak hours and expand it during the peak hours to run turbines. Whereas in the shipping industry; LNG is being considered as an alternative fuel to gasoline to meet the future emissions criteria of IMO. LNG not only reduces the vessel’s emissions but it is also cheaper than heavy fuel oils. As every technology has some pros and cons, the efficiency of cryogenics power generation systems is low; about 25%, but work is being done to improve its efficiency and to find alternative applications.\u0000 This article discusses the applications, advantages, and drawbacks of cryogenics technologies and fuels for energy generation and storage applications. It also focuses on the challenges which are being faced by this technology and possible ways to overcome them.","PeriodicalId":282703,"journal":{"name":"ASME 2020 Power Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126099051","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

Life Cycle Assessment of Hydrogen Fuelcell-Based Commercial and Heavy-Duty Vehicles 基于氢燃料电池的商用和重型车辆的生命周期评估

ASME 2020 Power Conference Pub Date : 2020-08-04 DOI: 10.1115/power2020-16770

Shahbaz Tahir, M. Hussain

{"title":"Life Cycle Assessment of Hydrogen Fuelcell-Based Commercial and Heavy-Duty Vehicles","authors":"Shahbaz Tahir, M. Hussain","doi":"10.1115/power2020-16770","DOIUrl":"https://doi.org/10.1115/power2020-16770","url":null,"abstract":"\u0000 This paper focuses on FuelCell-based electromobility (Commercial and Heavy-Duty Vehicles) to judge its ability to reduce GHG (Greenhouse Gas) emissions in the Transport sector as to fulfill Paris Agreement demands to struggle against Global warming. Current LCA studies and literature show that BEVs (Battery Powered Vehicles) offer lesser emissions and better driving experience to users compared to FCEVs (Fuel Cell Vehicles) with existing German’s energy mix, but in the longer run transformation is needed in transportation sector and infrastructure to diminish emissions arising from this sector. Since most of the developed nations are looking beyond 2030 with a vision of renewables integration for Power and Energy so, LCA results proved that: In upcoming decades, FCEVs offer lesser or zero-emissions with same driving experience as provided by BEVs. H2 (Hydrogen) here plays a significant role because its production is very energy-intensive; hence, future Fuel Cell mobility is only beneficial if H2 supply is ensured by renewables. From the historical point of view, Europe always acted as a leader among all continents to fight against climate change, and Germany is the prime economy in Europe and a foremost contributor to GHG emissions. Therefore, it has been chosen for our LCA study.","PeriodicalId":282703,"journal":{"name":"ASME 2020 Power Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129137974","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

Large Eddy Simulations of In-Nozzle Cavitation Phenomena for Cold Fuel Injection 冷燃油喷射喷嘴内空化现象的大涡模拟

ASME 2020 Power Conference Pub Date : 2020-08-04 DOI: 10.1115/power2020-16552

Stavros Bontitsopoulos, A. Hamzehloo, P. Aleiferis, R. Cracknell

引用次数: 1

Digitalisation of Biomass Exploration: A Case Study of Biomass Feedstock Classification 生物质勘探的数字化:生物质原料分类的案例研究

ASME 2020 Power Conference Pub Date : 2020-08-04 DOI: 10.1115/power2020-16772

O. Olatunji, N. Madushele, P. Adedeji, S. Akinlabi

{"title":"Digitalisation of Biomass Exploration: A Case Study of Biomass Feedstock Classification","authors":"O. Olatunji, N. Madushele, P. Adedeji, S. Akinlabi","doi":"10.1115/power2020-16772","DOIUrl":"https://doi.org/10.1115/power2020-16772","url":null,"abstract":"\u0000 Biomass is one of the renewable energy (RE) sources with high prospects in the clean energy strata. The diversity of its application and sources have made digitalisation of its exploration presents an array of attractive opportunity to deploy different categories of biomass in a manner that mitigates climate change, advances economies and reduces power dependency. This study discusses the drivers of digitalisation in bioenergy exploration with the associated opportunities and challenges along the bioenergy value chain. As proof of concept, a case study based on the intelligent classification perspective of digitalisation of biomass was discussed. Two classifiers: Sparse Random Error-Correcting Output-based Support Vector Machine (SRECO-SVM) and Euclidean distance-based k-Nearest Neighbour (KNN-EUM) were elaborated while the procedures for the model development were highlighted. Relevant performance indices were applied to evaluate the models developed. Most significantly, the Accuracy, Sensitivity, Specificity were 0.77, 0.81, 0.97 respectively for SRECO-SVM at the computational time (CT) of 20.41 secs while 0.55, 0.56, 0.96 respectively were reported for KNN-EUM at the computational time (CT) of 20.40 secs. Some other composite metrics, which include G-means, F1-score, Mathews correlation coefficient (MCC), Discriminant power (DP) were reported. On the overall, a synergistic relationship is needed between the data analytics, artificial intelligence and other blockchain technologies in order to unleash the full benefits of digitalisation.","PeriodicalId":282703,"journal":{"name":"ASME 2020 Power Conference","volume":"328 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124300033","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

HRSG Fleet Integrity Management: Lessons Learned From the Field HRSG车队完整性管理:从现场吸取的经验教训

ASME 2020 Power Conference Pub Date : 2020-08-04 DOI: 10.1115/power2020-16890

A. Fabricius, James Malloy, Mark Taylor, Peter Jackson, D. Moelling

{"title":"HRSG Fleet Integrity Management: Lessons Learned From the Field","authors":"A. Fabricius, James Malloy, Mark Taylor, Peter Jackson, D. Moelling","doi":"10.1115/power2020-16890","DOIUrl":"https://doi.org/10.1115/power2020-16890","url":null,"abstract":"\u0000 This paper presents key lessons learned from hundreds of field missions for assessing the condition of HRSGs at sites around the world. These involved field inspections, root cause of failure analyses and performance assessments on HRSGs of nearly every design, fuel type and operating mode. Statistics on degradation and failure risk areas are presented. Analysis techniques used in both preparing for field work and in assessing field examination results are also discussed. Trends in the evolution of the principal damage mechanisms over the years are examined, and predictions of future problem areas are considered with a view to guiding asset management actions. The impact on HRSG integrity of changes in unit designs, such as the move to flexible operation in response to the increasing contribution from renewables, is also assessed, and likely future trends are outlined. The use of qualitative and quantitative risk-based methods is also discussed and compared to the use of condition-based inspection methods as a basis for a fleet wide management strategy. A case study including a large IPP with several generating assets in its portfolio is presented and the most cost-effective method with respect to current corporate strategy is discussed. Recommendations for fleet management strategies are made.","PeriodicalId":282703,"journal":{"name":"ASME 2020 Power Conference","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132333928","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

Convolutional Neural Network Model for the Prediction of Plenum Temperature in a Waste Glass Melter 用卷积神经网络模型预测废玻璃熔炼机内部温度

ASME 2020 Power Conference Pub Date : 2020-08-04 DOI: 10.1115/power2020-16993

Alexander W. Abboud, D. Guillen, R. Pokorný

{"title":"Convolutional Neural Network Model for the Prediction of Plenum Temperature in a Waste Glass Melter","authors":"Alexander W. Abboud, D. Guillen, R. Pokorný","doi":"10.1115/power2020-16993","DOIUrl":"https://doi.org/10.1115/power2020-16993","url":null,"abstract":"\u0000 Legacy radioactive tank waste is slated to undergo vitrification at the Waste Treatment and Immobilization Plate (WTP) using Joule-heated, ceramic-lined melters. A high-fidelity, computational fluid dynamics (CFD) model of the pilot-scale DM1200 melter has been developed to provide an understanding of the heat transfer and fluid dynamics within the WTP melters. Monitoring of the non-radioactive pilot-scale system has been primarily done through visual observations. However, visual observations will not be possible in the full-scale radioactive melter and process control will be based upon the measured plenum temperatures. Using the CFD model, the effect of the cold cap coverage on the plenum temperature can be assessed. The plenum temperature within the DM1200 is primarily driven by the amount and distribution of the cold cap coverage on the melt pool, since thermal radiation is the dominant mode of heat transfer at these temperatures. Plenum temperatures in the DM1200 obtained during pilot-scale testing by the Vitreous State Laboratory were used for model validation. A standard LeNet-1 convolutional neural network (CNN) is used to predict the spatial cold cap coverage of the model from the computed plenum temperature distributions derived from known cold cap topologies. With a 16 cm × 16 cm filter applied, an accuracy of 89% was achieved.","PeriodicalId":282703,"journal":{"name":"ASME 2020 Power Conference","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126689099","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