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Analysis on the Pyrolysis Characteristics of Waste Plastics Using Plug Flow Reactor Model 基于塞流反应器模型的废塑料热解特性分析
New & Renewable Energy Pub Date : 2022-12-31 DOI: 10.7849/ksnre.2022.0037
S. Choi, Yeon-sock Choi, Y. Jeong, So-young Han, Q. Nguyen
{"title":"Analysis on the Pyrolysis Characteristics of Waste Plastics Using Plug Flow Reactor Model","authors":"S. Choi, Yeon-sock Choi, Y. Jeong, So-young Han, Q. Nguyen","doi":"10.7849/ksnre.2022.0037","DOIUrl":"https://doi.org/10.7849/ksnre.2022.0037","url":null,"abstract":"","PeriodicalId":178528,"journal":{"name":"New & Renewable Energy","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121225762","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: 2
Characteristics and Limitations of Green Premium in the Korean RE100 System 韩国RE100系统绿色溢价的特点与局限性
New & Renewable Energy Pub Date : 2022-09-25 DOI: 10.7849/ksnre.2022.0028
Wonchang Yang, Jae-Seung Lee
{"title":"Characteristics and Limitations of Green Premium in the Korean RE100 System","authors":"Wonchang Yang, Jae-Seung Lee","doi":"10.7849/ksnre.2022.0028","DOIUrl":"https://doi.org/10.7849/ksnre.2022.0028","url":null,"abstract":"","PeriodicalId":178528,"journal":{"name":"New & Renewable Energy","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134560106","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
Technology Competitiveness Analysis of New & Renewable Energy in Major Countries 主要国家新能源与可再生能源技术竞争力分析
New & Renewable Energy Pub Date : 2022-09-25 DOI: 10.7849/ksnre.2022.0022
Su-Jin Ha, Ji-Hyeok Choi, S. Oh
{"title":"Technology Competitiveness Analysis of New & Renewable Energy in Major Countries","authors":"Su-Jin Ha, Ji-Hyeok Choi, S. Oh","doi":"10.7849/ksnre.2022.0022","DOIUrl":"https://doi.org/10.7849/ksnre.2022.0022","url":null,"abstract":"","PeriodicalId":178528,"journal":{"name":"New & Renewable Energy","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114240172","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
Design Study of a Brazed Plate Heat Exchanger Condenser Through Two-Phase Flow Analysis 基于两相流分析的钎焊板式换热器冷凝器设计研究
New & Renewable Energy Pub Date : 2022-06-25 DOI: 10.7849/ksnre.2022.0017
Dae-jung Hwang, C. Oh, Sang-kyun Park, Jae-hoon Jee, Eun-shin Bang, Byeong-gil Lee
{"title":"Design Study of a Brazed Plate Heat Exchanger Condenser Through Two-Phase Flow Analysis","authors":"Dae-jung Hwang, C. Oh, Sang-kyun Park, Jae-hoon Jee, Eun-shin Bang, Byeong-gil Lee","doi":"10.7849/ksnre.2022.0017","DOIUrl":"https://doi.org/10.7849/ksnre.2022.0017","url":null,"abstract":"This study was aimed at designing a condenser, as a component of the organic Rankine cycle system for ships. The condenser was manufactured through press molding to achieve a bent shape to enhance the heat transfer performance, considering the shape of the heat transfer plate used in a brazing plate heat exchanger. The heat transfer plate was made of copper-nickel alloy. The required heat transfer rate for the condenser was 110 kW, and the maximum number of layers was set as 25, considering the characteristics of high-temperature brazing. Computational fluid dynamics techniques were used to perform the thermal fluid analysis, based on the ANSYS CFX (v.18.1) commercial program. The heat transfer rate of the condenser was 4.96 kW for one layer (width and length of 0.224 and 0.7 m, respectively) of the heat transfer exchanger. The fin efficiency pertaining to the heat transfer plate was approximately 20%. The heat flow analysis for one layer of the heat exchanger plate indicated that the condenser with 25 layers of heat transfer plates could achieve a heat transfer rate of 110 kW.","PeriodicalId":178528,"journal":{"name":"New & Renewable Energy","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132906849","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 Chestnut-shell Tea Waste and Castor Oil as an Additive on Fuel Characteristics of Pellets Fabricated with Pitch Pine and Mongolian Oak 板栗壳茶渣和蓖麻油对沥青松、蒙古栎制球团燃料特性的影响
New & Renewable Energy Pub Date : 2022-06-25 DOI: 10.7849/ksnre.2022.0004
HyeonJeong Kim, In Yang, Gyu-Seong Han
{"title":"Effect of Chestnut-shell Tea Waste and Castor Oil as an Additive on Fuel Characteristics of Pellets Fabricated with Pitch Pine and Mongolian Oak","authors":"HyeonJeong Kim, In Yang, Gyu-Seong Han","doi":"10.7849/ksnre.2022.0004","DOIUrl":"https://doi.org/10.7849/ksnre.2022.0004","url":null,"abstract":"This study aimed to determine the optimal conditions for fabricating pitch pine (PCP) and Mongolian oak (MOK) pellets using chestnut-shell tea waste (CSW) and castor oil (CSO) as additives. For pellets fabricated using a pilot-scale flat-die pellet mill, all moisture content (MC) was in line with A1 wood pellet standards for residential and small-scale commercial uses designated by the National Institute of Forest Science at the Republic of Korea (NIFOS), regardless of fabricating conditions; the durability of PCP pellets prepared using PCP particles with 10% MC, and CSW addition also satisfied these criteria. The moisture tolerance of PCP pellets improved with combination of 2 wt% CSW and 2-6 wt% CSO. Overall, use of 20 mesh CSW as an additive, PCP with 10% MC, and MOK with 12% MC was found to be optimal. Moreover, using CSO as an additive, high-quality PCP and MOK pellets can be fabricated by adjusting the particles to 12% MC. However, the durability of PCP and MOK pellets prepared using these conditions did not meet the wood pellet standards for residential and small-scale commercial use. Therefore, further research is needed to improve the durability of these pellets.","PeriodicalId":178528,"journal":{"name":"New & Renewable Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130584647","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
Behavior of Hydrogen and Organic Acids in Anaerobic Digestion of Food Wastewater 氢和有机酸在食品废水厌氧消化中的行为
New & Renewable Energy Pub Date : 2022-06-25 DOI: 10.7849/ksnre.2022.0019
Kyungmin Cho, Saeeun Oh
{"title":"Behavior of Hydrogen and Organic Acids in Anaerobic Digestion of Food Wastewater","authors":"Kyungmin Cho, Saeeun Oh","doi":"10.7849/ksnre.2022.0019","DOIUrl":"https://doi.org/10.7849/ksnre.2022.0019","url":null,"abstract":"In this study, we used the Flux Balance Analysis (FBA) program to examine the behavior of hydrogen and organic acids according to seasonal changes in food wastewater collected from D city. The results showed that average hydrogen conversion rates in spring, summer, autumn, and winter were 1.06, 0.71, 1.21, and 1.13 mol H 2 /mol of hexose added , respectively, indicating a significantly lower hydrogen conversion rate in summer than in other seasons. This phenomenon is believed to occur because the carbohydrate concentration of the incoming food wastewater is low. In addition, Lactobacillus , the lactic acid-producing bacterium, was 21.3% in spring, 27.2% in summer, 17.5% in autumn, and 22.6% in winter. The most distinctive feature of the microbial community in summer was that 15.3% of the Ilyobacter was analyzed. It was confirmed that Ilyobacter , which is involved in the production of acetic acid and propionic acid, is closely associated with the tendency of increasing acetic acid and propionic acid and thus contributes to organic acid change. Clostridium , a hydrogen-producing bacterium, was 76.2%, 50.8%, 78.3%, and 74%, in spring, summer, autumn, and winter, respectively. It was confirmed that Clostridium dominates the microbial community by approximately 70% or more in all seasons except summer. ), Hydrogen( 수소 ), Organic acid( 유기산 ), Microbial community( 미생물군집 )","PeriodicalId":178528,"journal":{"name":"New & Renewable Energy","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133606023","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
Exergy Analysis of Waste Energy Recovery System in Regasification Process of LNG FSRU LNG FSRU再气化过程废能回收系统的火用分析
New & Renewable Energy Pub Date : 2022-06-25 DOI: 10.7849/ksnre.2022.0018
Seoung Hyun Han, Jae-Ho Jo, J. Kwon, Kyoungwoo Park, Byung Chul Choi
{"title":"Exergy Analysis of Waste Energy Recovery System in Regasification Process of LNG FSRU","authors":"Seoung Hyun Han, Jae-Ho Jo, J. Kwon, Kyoungwoo Park, Byung Chul Choi","doi":"10.7849/ksnre.2022.0018","DOIUrl":"https://doi.org/10.7849/ksnre.2022.0018","url":null,"abstract":"In this study, the exergy characteristics were analyzed, according to the mass flow rate of the propane working fluid and the pressure change in the turbine inlet, for the efficient recovery of cold energy and exhaust heat by the waste energy recovery system applied to the LNG FSRU regasification process. When the turbine inlet pressure and mass flow rate of the Primary Rankine Cycle were kept constant, the exergy efficiency and the net power increased. This occurred as the turbine inlet pressure and the mass flow rate of the working fluid increased in the Secondary Rankine Cycle, respectively, and the maximum values were confirmed. In this regard, the fluctuations in the exergy rate flowing into and out of the system and the exergy rate destroyed by pumps, evaporators, turbines, and LNG heat exchangers (condensers) were examined in detail.","PeriodicalId":178528,"journal":{"name":"New & Renewable Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128725481","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
Feasibility Study of the Introduction of Hydrogen System and Plus DR on Campus MG 校园MG引入氢气系统及加氢DR的可行性研究
New & Renewable Energy Pub Date : 2022-03-25 DOI: 10.7849/ksnre.2022.2032
Gyuha Woo, Soojin Park, Yongbeum Yoon
{"title":"Feasibility Study of the Introduction of Hydrogen System and Plus DR on Campus MG","authors":"Gyuha Woo, Soojin Park, Yongbeum Yoon","doi":"10.7849/ksnre.2022.2032","DOIUrl":"https://doi.org/10.7849/ksnre.2022.2032","url":null,"abstract":"","PeriodicalId":178528,"journal":{"name":"New & Renewable Energy","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125152494","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
Passivating Contact Properties based on SiOX/poly-Si Thin Film Deposition Process for High-efficiency TOPCon Solar Cells 基于SiOX/多晶硅薄膜沉积工艺的高效TOPCon太阳能电池钝化接触性能研究
New & Renewable Energy Pub Date : 2022-01-01 DOI: 10.7849/ksnre.2022.2031
Sungheon Kim, Taeyong Kim, S. Jeong, Ye-Seul Cha, Hongrae Kim, Somin Park, M. Ju, J. Yi
{"title":"Passivating Contact Properties based on SiOX/poly-Si Thin Film Deposition Process for High-efficiency TOPCon Solar Cells","authors":"Sungheon Kim, Taeyong Kim, S. Jeong, Ye-Seul Cha, Hongrae Kim, Somin Park, M. Ju, J. Yi","doi":"10.7849/ksnre.2022.2031","DOIUrl":"https://doi.org/10.7849/ksnre.2022.2031","url":null,"abstract":"","PeriodicalId":178528,"journal":{"name":"New & Renewable Energy","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121387097","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
Impact of ESG (Environmental, Social, Governance) on the Performance of Electric Utilities ESG(环境、社会、治理)对电力公司绩效的影响
New & Renewable Energy Pub Date : 1900-01-01 DOI: 10.7849/ksnre.2022.0010
Byung-Ho Ko, Kyuhwan Lee, Yongbeum Yoon, Soojin Park
{"title":"Impact of ESG (Environmental, Social, Governance) on the Performance of Electric Utilities","authors":"Byung-Ho Ko, Kyuhwan Lee, Yongbeum Yoon, Soojin Park","doi":"10.7849/ksnre.2022.0010","DOIUrl":"https://doi.org/10.7849/ksnre.2022.0010","url":null,"abstract":"The environmental, social, and governance (ESG) score is gaining recognition as important nonfinancial investment criteria. With climate change emerging as a global issue, energy companies must pay attention to the ESG impact on corporate performance. In this study, the ESG impact on the performance of energy companies was analyzed based on 23 companies selected from the S&P 500. The panel corrected standard error methodology was used. The Refinitiv ESG score was the independent variable, and financial performance metrics, such as Tobin’s Q, return on assets, and return on equity, were the dependent variables. It was found that the ESG score is positively associated with long-term corporate value but not with short-term profitability in the electricity utility industry. Among the subcategories of ESG, the environmental and social scores also showed positive correlations with long-term corporate value. A direct incentive policy is recommended that can offset expenses for ESG activities to reduce carbon emission in the energy sector.","PeriodicalId":178528,"journal":{"name":"New & Renewable Energy","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124422386","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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