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High-Temperature Corrosion Characterization for Super-Heater Tube under Coal and Biomass Co-firing Conditions 煤与生物质共烧条件下过热器管高温腐蚀特性研究
Power System Engineering Pub Date : 2018-02-28 DOI: 10.9726/KSPSE.2018.22.1.079
Seok-Kyun Park, C. Mock, Jinmu Jung, Jonghyun Oh, S. Choi
{"title":"High-Temperature Corrosion Characterization for Super-Heater Tube under Coal and Biomass Co-firing Conditions","authors":"Seok-Kyun Park, C. Mock, Jinmu Jung, Jonghyun Oh, S. Choi","doi":"10.9726/KSPSE.2018.22.1.079","DOIUrl":"https://doi.org/10.9726/KSPSE.2018.22.1.079","url":null,"abstract":"","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"33 11-12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120892637","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 Basic Study on Combustion Characteristics of Radical Ignition Sub-chamber Type CNG DI Engine 径向点火分室式CNG直喷式发动机燃烧特性的基础研究
Power System Engineering Pub Date : 2018-02-28 DOI: 10.9726/kspse.2018.22.1.056
S. Chung, S. Hwang, Choon-Mee Lim
{"title":"A Basic Study on Combustion Characteristics of Radical Ignition Sub-chamber Type CNG DI Engine","authors":"S. Chung, S. Hwang, Choon-Mee Lim","doi":"10.9726/kspse.2018.22.1.056","DOIUrl":"https://doi.org/10.9726/kspse.2018.22.1.056","url":null,"abstract":"","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"160 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134529419","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
Dynamic Performance Simulation of OTEC According to Seawater Temperature Change 海水温度变化下OTEC动态性能模拟
Power System Engineering Pub Date : 2018-02-28 DOI: 10.9726/kspse.2018.22.1.034
Seungtaek Lim, Ho-seang Lee, Hyeon-Ju Kim
{"title":"Dynamic Performance Simulation of OTEC According to Seawater Temperature Change","authors":"Seungtaek Lim, Ho-seang Lee, Hyeon-Ju Kim","doi":"10.9726/kspse.2018.22.1.034","DOIUrl":"https://doi.org/10.9726/kspse.2018.22.1.034","url":null,"abstract":"","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"6 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128768192","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
Study on the Dynamic Behaviors of Wave Energy Converter by using RecurDyn 基于RecurDyn的波浪能量转换器动力特性研究
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/KSPSE.2017.21.2.035
J. Sohn, C. Jun, Min-Soo Kim
{"title":"Study on the Dynamic Behaviors of Wave Energy Converter by using RecurDyn","authors":"J. Sohn, C. Jun, Min-Soo Kim","doi":"10.9726/KSPSE.2017.21.2.035","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.2.035","url":null,"abstract":"In this study, the multi-body dynamics model for a wave energy converter is established. The equations of motions for the mechanical parts of the wave energy converter are derived to analyze the dynamic behavior. A spring method with the same performance as the counter weight method is proposed. The counter weight method and spring method are analyzed for evaluating the performance of the wave energy converter. RecurDyn program which is a kind of commercial multi-body dynamics program is used to perform the dynamic simulation of the wave energy converter.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129241048","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
Performance Characteristics of Flooded Type Evaporator for Seawater Cooling System with Heat Source Temperature of Mid-year 年中热源温度海水冷却系统淹水式蒸发器性能特性研究
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/KSPSE.2017.21.2.064
J. Yoon, C. Son, Jeong-Mok Lee, In-Ho Kang
{"title":"Performance Characteristics of Flooded Type Evaporator for Seawater Cooling System with Heat Source Temperature of Mid-year","authors":"J. Yoon, C. Son, Jeong-Mok Lee, In-Ho Kang","doi":"10.9726/KSPSE.2017.21.2.064","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.2.064","url":null,"abstract":"The purpose of this study is to investigate the performance characteristics of seawater cooling system for a fishing vessel. The circulation amount of refrigerant, condensation capacity, evaporation capacity, compression work and coefficient of performance(COP) were analyzed as the heat source temperature changed. The experimental setup consisted of an open-type compressor, a shell&tube type condenser, an evaporator and an expansion valve. The heat source was controlled by a constant temperature chamber. The main results of this study are summarized as follows. The condensation capacity increased with increasing heat source temperature, and it was confirmed that the effect of circulating amount of refrigerant was dominant. The amount of heat for vaporization was almost constant even though the temperature of the heat source increased. On the other hand, the compression power was increased. This is because the compression ratio increases as the condensation pressure, the enthalpy difference between inlet and outlet, the amount of circulating refrigerant increases. The performance coefficient of this system showed a tendency decreasing with increasing heat source temperature. Therefore, the basic data of the seawater cooling system for the maintenance of the catch line of the shore fishing boats was acquired through this study, and it is considered that it will be sufficient for the actual design.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131380746","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
Effect of the Suction Air Temperature on the Performance of a Positive Displacement Air Compressor 吸气温度对容积式空压机性能的影响
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/KSPSE.2017.21.2.089
Jang Ji Seong, Han Seung Hun, S. Ji
{"title":"Effect of the Suction Air Temperature on the Performance of a Positive Displacement Air Compressor","authors":"Jang Ji Seong, Han Seung Hun, S. Ji","doi":"10.9726/KSPSE.2017.21.2.089","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.2.089","url":null,"abstract":": Pneumatic systems are widely applied in various industry because it have a many advantage(low cost, high safety, etc.). Air compressors supply the working fluid to the pneumatic systems and consume a lot of electrical energy at the manufacturing site. The one of the suggested idea is to reduce the energy consumption by reducing the suction temperature of the air compressor and increasing the discharge flow rate. In this paper, the discharge flow rate and air power of the positive displacement type air compressor is simulated by changing the temperature of suction air and the relationship between the suction air temperature and the performance variation of the air compressor is analyzed. As a result, we know that as the suction temperature of air is lowered, the discharge mass flow-rate is increased, but the specific enthalpy is reduced rather than increased, which means that the power of the discharged air is not greatly increased even if lower the suction air temperature.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133115366","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
Heave Compensation System Design for Offshore Crane based on Input-Output Linearization 基于输入-输出线性化的海上起重机升沉补偿系统设计
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/kspse.2017.21.2.027
N. Le, Byung-Gak Kim, Young-Bok Kim
{"title":"Heave Compensation System Design for Offshore Crane based on Input-Output Linearization","authors":"N. Le, Byung-Gak Kim, Young-Bok Kim","doi":"10.9726/kspse.2017.21.2.027","DOIUrl":"https://doi.org/10.9726/kspse.2017.21.2.027","url":null,"abstract":"A heave motion of the offshore crane system with load is affected by unpredictable external factors. Therefore the offshore crane must satisfy rigorous requirements in terms of safety and efficiency. This paper intends to reduce the heave displacement of load position which is produced by rope extension and sea wave disturbance in vertical motion. In this system, the load position is compensated by the winch actuator control. The rope is modeled as a mass-damper-spring system, and a controller is designed by the input-output linearization method. The model system and the proposed control method are evaluated on the simulation results.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129288055","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
Study of a Forging Process for the Application of Boron Steel for Automotive Wheel Nut Material 硼钢用于汽车车轮螺母材料的锻造工艺研究
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/KSPSE.2017.21.2.041
Kwon-Soo Lee, Y. Ahn
{"title":"Study of a Forging Process for the Application of Boron Steel for Automotive Wheel Nut Material","authors":"Kwon-Soo Lee, Y. Ahn","doi":"10.9726/KSPSE.2017.21.2.041","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.2.041","url":null,"abstract":"","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124165036","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
Free Vibration Analysis of Timoshenko Arcs with Elastic Supports Using Transfer of Influence Coefficient 基于影响系数传递的弹性支承Timoshenko圆弧自由振动分析
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/kspse.2017.21.2.070
M. Choi, D. Yeo
{"title":"Free Vibration Analysis of Timoshenko Arcs with Elastic Supports Using Transfer of Influence Coefficient","authors":"M. Choi, D. Yeo","doi":"10.9726/kspse.2017.21.2.070","DOIUrl":"https://doi.org/10.9726/kspse.2017.21.2.070","url":null,"abstract":": When Timoshenko arcs considering the shear deformation and rotatory inertia have elastic supports, the authors analyze in-plane free vibration of them by the transfer influence coefficient method. This method finds the natural frequencies of them using the transfer of influence coefficient after obtaining the transfer matrix of arc element from numerical integration of the differential equations governing the vibration of arc. In this study, two computer programs were made by the transfer influence coefficient method and the transfer matrix method for analyzing free vibration of Timoshenko arcs. From numerical results of four computational models, we confirmed that the transfer influence coefficient method is a reliable method when analyzing the free vibration of Timoshenko arcs. In particular, the transfer influence coefficient method is a effective method when analyzing the free vibration of arcs with rigid supports.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123811704","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
Effect on Coefficient of Subgrade Reaction on Dynamic responses of Buried Pipelines 路基反力系数对埋地管道动力响应的影响
Power System Engineering Pub Date : 2017-04-30 DOI: 10.9726/KSPSE.2017.21.2.083
Jin-Ho Jeong, Kwang-Yeol Lee, Hyo-sub Kang
{"title":"Effect on Coefficient of Subgrade Reaction on Dynamic responses of Buried Pipelines","authors":"Jin-Ho Jeong, Kwang-Yeol Lee, Hyo-sub Kang","doi":"10.9726/KSPSE.2017.21.2.083","DOIUrl":"https://doi.org/10.9726/KSPSE.2017.21.2.083","url":null,"abstract":": We have examined the effect of values of subgrade reaction coefficient on the dynamic responses(displacement and strain responses) of the buried concrete pipeline of which the end boundary condition is the fixed ends. We have carried out the dynamic analysis of mode superposition method with representative values of coefficient of subgrade reaction applicable to the classified rock masses. We have found that the effect of subgrade reaction coefficient on the dynamic responses of the pipeline appears noticeable for the seismic waves having relatively high frequency and low apparent propagation velocity.","PeriodicalId":360692,"journal":{"name":"Power System Engineering","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115512204","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
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