Journal of the Korean Solar Energy Society最新文献_第9页

Analysis of Energy Saving Effect of Residential BESS Connected to Roof-top PV in a Multi-family House 多户住宅BESS与屋顶光伏并网节能效果分析

Journal of the Korean Solar Energy Society Pub Date : 2022-02-28 DOI: 10.7836/kses.2022.42.1.115

Ji-Young Eum, Yongki Kim

{"title":"Analysis of Energy Saving Effect of Residential BESS Connected to Roof-top PV in a Multi-family House","authors":"Ji-Young Eum, Yongki Kim","doi":"10.7836/kses.2022.42.1.115","DOIUrl":"https://doi.org/10.7836/kses.2022.42.1.115","url":null,"abstract":"The discussion about carbon neutrality has recently spread worldwide in response to the climate crisis. In Korea, the concept of zero-energy buildings is one of the means to reduce carbon emissions in the construction sector. Photovoltaic (PV) power systems are the most commonly installed renewable energy systems in residential buildings. However, the installed PV capacity in apartment houses is limited because of difficulty in securing PV installation area and inability to process the surplus PV power. Battery energy storage systems (BESSs) are emerging as a means for the storage and reuse of surplus PV power. In this study, the energy-saving effect of a residential BESS connected to a rooftop PV system was analyzed for eight households in a multi-family house. The data of the main load power (grid supply) and PV+BESS power from households collected from August to October 2021 were analyzed. During the operation of the BESS, the surplus PV power was stored in the battery, and the PV+BESS power was continuously supplied to the load by discharging the battery regardless of the PV power time. Based on the average representative data for 6 days, the power saving rate was approximately 26.0% for the rooftop PV system and approximately 41.8% for the BESS.","PeriodicalId":276437,"journal":{"name":"Journal of the Korean Solar Energy Society","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129846023","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

Optimal Operation of Energy Storage Devices based on Artificial Intelligence 基于人工智能的储能设备优化运行

Journal of the Korean Solar Energy Society Pub Date : 2022-02-28 DOI: 10.7836/kses.2022.42.1.155

Ji-Hyoun Lee, Woo-Hyun Kim, Tae-young Kang, Tae-Jun Park

引用次数: 0

Experimental Analysis on Annual Power Generations of Louver-integrated Bi-facial Photovoltaic Modules for Architectural Applications 建筑用百叶集成双面光伏组件年发电量实验分析

Journal of the Korean Solar Energy Society Pub Date : 2022-02-28 DOI: 10.7836/kses.2022.42.1.047

Kyung-joo Cho, Dong-woo Cho

{"title":"Experimental Analysis on Annual Power Generations of Louver-integrated Bi-facial Photovoltaic Modules for Architectural Applications","authors":"Kyung-joo Cho, Dong-woo Cho","doi":"10.7836/kses.2022.42.1.047","DOIUrl":"https://doi.org/10.7836/kses.2022.42.1.047","url":null,"abstract":"Solar power systems are the most commonly used renewable energy systems for energy self-sufficiency in buildings. In particular, bifacial photovoltaic modules for solar power generation have been researched for their optimal application, as they can generate electricity from two sides using only a single frame. In addition, because the price of a bifacial photovoltaic module is approximately 20% higher than that of a single-sided module, installing bifacial photovoltaic modules in suitable locations on buildings can be economical. To date, most studies have primarily focused on how to increase the amount of power generation from rear cells by arranging materials with high reflectivity on the floors of buildings. In point of fact, when bifacial photovoltaic modules are arranged in an east-west orientation, the maximum amount of power can be obtained in the mornings and afternoons. However, when these modules are installed in buildings in this orientation, a shadow is produced on the building surface according to the trajectory of the sun. In addition, when photovoltaic modules are used in the building envelope, the amount of power generation is often reduced because of this shadow. Nevertheless, even when considering this reduction in power generation, if the total power generation is higher than when photovoltaic modules are installed only vertically, the self-sufficiency rates of buildings can be improved. In this study, the shadow of a bifacial photovoltaic module was simulated using vertical photovoltaic modules to consider the possibilities of architectural application of bifacial photovoltaic modules.","PeriodicalId":276437,"journal":{"name":"Journal of the Korean Solar Energy Society","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124215381","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 Study on Requirements for Building Application Test of Photovoltaic Technology 光伏技术建筑应用试验要求研究

Journal of the Korean Solar Energy Society Pub Date : 2022-02-28 DOI: 10.7836/kses.2022.42.1.141

Yu-jin Lee, HunSeung Noh, D. Shin

引用次数: 0

Deep Learning Based Active Power Disaggregation of Appliances for Personalized Energy Feedback System 基于深度学习的个性化能量反馈系统电器有功功率分解

Journal of the Korean Solar Energy Society Pub Date : 2022-02-28 DOI: 10.7836/kses.2022.42.1.103

Imgyu Kim, Hyuncheol Kim, S. Shin

引用次数: 0

Effects of Flush-out Air Temperature on Reducing Indoor Air Pollutants in Newly Built Residential Buildings 排风温度对降低新建住宅室内空气污染物的影响

Journal of the Korean Solar Energy Society Pub Date : 2022-02-28 DOI: 10.7836/kses.2022.42.1.077

Seung-Rim Lee, SugnWon Cho, Ji-Ho Yoo, G. Cho

{"title":"Effects of Flush-out Air Temperature on Reducing Indoor Air Pollutants in Newly Built Residential Buildings","authors":"Seung-Rim Lee, SugnWon Cho, Ji-Ho Yoo, G. Cho","doi":"10.7836/kses.2022.42.1.077","DOIUrl":"https://doi.org/10.7836/kses.2022.42.1.077","url":null,"abstract":"In this study, the effect of flush-out temperature on indoor pollutant reduction was studied in a thermal environment chamber, whose design resembles that of a residential building. The results of this study and those of previous studies were compared. The measurement was carried out at 11°C and 16°C following a 6-day flush-out at. Consequently, the pollutants decreased by compared to 56% ~ 78% in previous studies. The flush-out had a reduction effect on the pollutants even at low temperatures. When compared with field measurement results, the effect of the pollutants reduced by flush-out temperature was different; however, it was confirmed that the flush-out has some effect of reducing pollutants even at low temperatures. By comparing the current results with those of field and chamber experiments conducted in previous studies with a t-test, the p-value was 0.05 or higher, indicating that the number of temperature-induced ventilations in the entire dataset was not a significant factor in the pollutant reduction effect. Therefore, based on the t-test analysis results of pollutant reduction effect by temperature, it was confirmed that the higher the temperature, the greater the pollutant reduction effect, 13% to 80%. The difference in the reduction effect by temperature varied for each pollutant.","PeriodicalId":276437,"journal":{"name":"Journal of the Korean Solar Energy Society","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130537331","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

Key Regulatory Impact Analysis on Onshore Wind Power based on Sensitivity Analysis 基于敏感性分析的陆上风电关键监管影响分析

Journal of the Korean Solar Energy Society Pub Date : 2022-02-28 DOI: 10.7836/kses.2022.42.1.013

Su-Jin Hwang, Jin-Young Kim, Hyun-Goo Kim

引用次数: 0

Investigation on Electric Energy Consumption Patterns of Residential Buildings in Four Cities through the Data Mining 基于数据挖掘的四城市住宅用电模式研究

Journal of the Korean Solar Energy Society Pub Date : 2022-02-28 DOI: 10.7836/kses.2022.42.1.127

mun Gu Seo, Hyomun Lee, Jongho Yoon, Dongsu Kim

{"title":"Investigation on Electric Energy Consumption Patterns of Residential Buildings in Four Cities through the Data Mining","authors":"mun Gu Seo, Hyomun Lee, Jongho Yoon, Dongsu Kim","doi":"10.7836/kses.2022.42.1.127","DOIUrl":"https://doi.org/10.7836/kses.2022.42.1.127","url":null,"abstract":"The government and private sectors in Korea have actively conducted the studies associated with high energy-efficient buildings to enable the zero-energy building (ZEB) targets. Establishing a reference baseline condition is essential to achieve the targets effectively. This study explores electrical energy consumption of residential building types under the city-level condition to identify baseline energy patterns and set up the benchmark dataset. An open-source dataset is used, which is provided by the public housing management information system (i.e., the K-apt website) of the government management office. For this study, five (5) years of electricity usage are reflected for the data-mining process (e.g., removing noise data) and its statistical analysis. This study considers four representative cities for the energy benchmarking analysis, including Seoul, Busan, Gwangju, and Daejeon. Results indicated that the energy distribution patterns of the residential buildings were varied according to the regions, analysis years, and other combined effects such as the range of dataset in the processing. This study concludes that the benchmark dataset will be useful and informative to determine the relative system capacity potential under monthly and yearly trends in the representative locations in Korea.","PeriodicalId":276437,"journal":{"name":"Journal of the Korean Solar Energy Society","volume":"32 45","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120967743","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

Heat Transfer Performance and Pressure Drop Analysis According to Shape Conditions of Turbulent Promoters and Flow Conditions in Air-Type PV/T Collectors 气流型PV/T集热器紊流促进器形状及流动条件下的换热性能及压降分析

Journal of the Korean Solar Energy Society Pub Date : 2022-02-28 DOI: 10.7836/kses.2022.42.1.087

Seong-Geun Kim, Junyeop Kim, Byunghwa An, Youngbok Kim, C. Son, J. Yoon, Kwang-Bae Choi

{"title":"Heat Transfer Performance and Pressure Drop Analysis According to Shape Conditions of Turbulent Promoters and Flow Conditions in Air-Type PV/T Collectors","authors":"Seong-Geun Kim, Junyeop Kim, Byunghwa An, Youngbok Kim, C. Son, J. Yoon, Kwang-Bae Choi","doi":"10.7836/kses.2022.42.1.087","DOIUrl":"https://doi.org/10.7836/kses.2022.42.1.087","url":null,"abstract":"Air-type photovoltaic and thermal (PV/T) has a lower thermal capacity than liquid-type one; therefore, studies are being conducted turbulence promoters to improve heat transfer in a duct. This study aims to evaluate heat transfer performance and pressure drop while changing the increasing and decreasing ratio of turbulence promoters by using computational fluid dynamics (CFD). The increasing and decreasing ratio is a concept focused on increasing the height of turbulence promoters n times from the first row to the last row to generate high air temperatures at the outlet side. As a result, the difference in heat transfer performance according to the increasing and decreasing ratio was minimal; however, it was confirmed that the pressure drop increased in the order of 1.3, 1.2, and 1.1, because the increased resistance to air flow due to increased installation height of the turbulent promoters. Accordingly, it was found that the thermohydraulic performance parameter (THPP) increased in the order of 1.1, 1.2, and 1.3. Because of the changes for various shape conditions were not taken into account, additional consideration is required to select suitable conditions.","PeriodicalId":276437,"journal":{"name":"Journal of the Korean Solar Energy Society","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116724842","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

Structural Analysis for Physical Separation of End-of-life Photovoltaic Module 报废光伏组件物理分离的结构分析

Journal of the Korean Solar Energy Society Pub Date : 2022-02-28 DOI: 10.7836/kses.2022.42.1.001

K. Seo, Jun-Kyu Lee, Y. Ahn, Gi-Hwan Kang, H. Chang, Jinseok Lee

引用次数: 1