Energy Science & Engineering最新文献

{"title":"Evaluation of Carbon Emission Efficiency and Analysis of Influencing Factors of Chinese Oil and Gas Enterprises","authors":"Pengtai Li,&nbsp;Yanqiu Wang,&nbsp;Junqiao Liu,&nbsp;Mingxin Liang","doi":"10.1002/ese3.2055","DOIUrl":"https://doi.org/10.1002/ese3.2055","url":null,"abstract":"<p>In 2020, China announced its “dual-carbon” goal to the world, demonstrating the responsibility of a country to reduce emissions and consumption. Reducing carbon emissions is pivotal in achieving this ambitious goal. Oil and gas enterprises are significant contributors to China's carbon emissions. Evaluating the efficiency of their carbon emissions and analyzing the influencing factors are of great significance for achieving the “dual-carbon” goal and promoting sustainable development. In this paper, 69 Chinese oil and gas enterprises are selected as research objects, collecting data from 2016 to 2021. The DEA–SBM model and GML index are used to conduct static and dynamic evaluations of carbon emission efficiency, and the Tobit model is used to analyze the factors affecting this efficiency from both internal and external perspectives. The results show that the carbon emission efficiency of Chinese oil and gas enterprises as a whole is relatively low and shows an upward trend during the study period. There are significant differences in the annual average values of carbon emission efficiency among these enterprises, with obvious disparities observed between different categories. Energy consumption intensity and capital–labor ratio have a notably negative impact on carbon emission efficiency. Conversely, per capita income from the main business, environmental regulation intensity, and foreign direct investment significantly contribute to the carbon emission efficiency of oil and gas enterprises. Meanwhile, the energy consumption structure, R&amp;D investment intensity, economic development level, and government subsidy intensity do not play a significant impact on the carbon emission efficiency of these enterprises.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 3","pages":"1156-1170"},"PeriodicalIF":3.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.2055","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneous Energy, Fresh Water, and Biogas Production Process Utilizing Solar Thermal and Sewage Sludge","authors":"Milad Imandoust,&nbsp;Seyed Taher Kermani Alghorayshi,&nbsp;Solmaz Abbasi,&nbsp;Mehran Seifollahi,&nbsp;Rahim Zahedi","doi":"10.1002/ese3.1980","DOIUrl":"https://doi.org/10.1002/ese3.1980","url":null,"abstract":"<p>Minimizing the detrimental effects of global warming and pollution from fossil fuel consumption is essential to meet the growing demand for energy and fresh water, making it imperative to adopt renewable energy alternatives. The integration of solar energy and biomass in hybrid renewable energy systems will grow in importance. The proposed study introduces a new design that facilitates the simultaneous production of power, biogas, and fresh water in a continuous process. The present research aims to tackle the challenge of utilizing multiple renewable energy sources, such as solar and biomass, to generate power, fuel, and fresh water. To achieve this, a 4-stage multi-effect desalination system will be employed for desalinating seawater. This paper discusses combining hybrid solar and biomass feedstocks to address the challenge of maintaining consistent energy production in renewable solar power plants at night, when there is no sunlight. The challenge at hand involves assessing various factors using ASPEN Plus software, such as solar heat transfer fluid (SHTF), sewage sludge flowrates, biogas production, output waste stream of gasification reactor, power generation, and freshwater production. Additionally, the payback period for this project is approximately 4.8 years, with a net present value (NPV) of around 560 million dollars. By performing a sensitivity analysis, the viability of the designed process and the quality of the resulting products were effectively demonstrated. From the gasification process, an impressive 76.8586 tons per hour of syngas, composed of carbon monoxide and hydrogen, was generated. Additionally, the power output of the system reached 34.547 MW, while simultaneously producing approximately 783 m³/h of fresh water. Due to efficient energy recovery throughout the entire process, only 25 MW of solar power was required. Despite efforts, fresh water production was only operating at a 50% productivity level. To supply the required solar energy during daylight hours, a total of 38,908 square meters of Parabolic trough collector (PTC) was necessary. According to the environmental analysis, the primary concern is the detrimental effect of pollution on human health. Solar collectors and sea water desalination units account for over 95% of the pollution. The revelation showed that combining solar and biomass energy resources could provide a sustainable solution to meet the rising demand for fresh water, electricity, and fuel.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 2","pages":"530-550"},"PeriodicalIF":3.5,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.1980","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-Carbon Dispatch of Integrated Energy Systems Considering Solar Thermal Coupled Combined Heat and Power Units","authors":"You Lv,&nbsp;Zeyang Li,&nbsp;Dan Deng,&nbsp;Yijun Shi,&nbsp;Hao Sun,&nbsp;Tenghui Wang","doi":"10.1002/ese3.1995","DOIUrl":"https://doi.org/10.1002/ese3.1995","url":null,"abstract":"<p>To reduce carbon emissions of an integrated energy system (IES), and decrease curtailment of wind and solar energy due to the “power determined by heat” characteristics of combined heat and power (CHP) units, this paper proposes a low-carbon and economic optimal scheduling model of an IES that considers solar thermal coupled with CHP. First, to alleviate the coupling of heat and electric power, a solar thermal collector (STC)-CHP unit model is developed by integrating an STC unit with the traditional CHP unit in the IES. In addition, hydrogen energy utilization equipment, including hydrogen fuel cell (HFC), hydrogen storage (HS), is introduced based on the traditional power-to-gas (P2G) process, to fully exploit the value of hydrogen. Meanwhile, the carbon capture system (CCS) is considered in the IES to reduce the carbon emission. Next, a low-carbon economic dispatch model of the STC-CHP-P2G-CCS coupled IES is established considering the reward and punishment ladder-type carbon trading (RPLCT) mechanism, aiming to minimize economic costs. The proposed model is solved by programming the CPLEX solver through the YALMIP toolbox. Finally, two categories of scenarios simulation are set up to evaluate the proposed IES and its dispatch strategy. Results show that the total daily operating cost of the proposed system amounts to 8.6525 million RMB, marking a significant reduction of 8.2695 million RMB compared to the basic system. This substantial saving not only covers but also exceeds the daily investment cost of 1.8561 million RMB required for the new equipment, demonstrating a certain level of economic viability. In addition, the system achieves a 100% renewable energy accommodation rate, and carbon emissions are reduced by 2596.3 tons by incorporating the RPLCT mechanism, achieving negative carbon emissions.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 2","pages":"562-581"},"PeriodicalIF":3.5,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.1995","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on Zonal Support Mechanism and the Surrounding Rock Control Technology of Rock Roadway Excavated by TBM in Coal Mine","authors":"Zhao Chen,&nbsp;Sheng Zhang,&nbsp;Yiqiang Lu,&nbsp;Zhanbiao Yang,&nbsp;Longfei Wang,&nbsp;Fei He","doi":"10.1002/ese3.2059","DOIUrl":"https://doi.org/10.1002/ese3.2059","url":null,"abstract":"<p>Tunnel boring machine (TBM) has been increasingly used for excavating rock roadways in coal mines. However, the slower speed of support installation, compared to the cutterhead's fast rock-breaking capability, limits the overall excavation speed of rock roadways. This study examines the construction of a gas drainage roadway in Shoushan No.1 coal mine using a double-shield TBM. A mechanical model for TBM excavation was developed, considering the spatial effects of the excavation face. The study identified a zonal support mechanism for the surrounding rock in TBM excavation roadways, it also analyzed the effects of support reaction forces and virtual support forces on the surrounding rock of different zones. A zonal control technology for surrounding rock was proposed and successfully implemented in the field. The results indicate that the strain evolution of the surrounding rock behind the TBM excavation face displays distinct zonal features. Based on this, the study recommends timely support for critical areas of the roadway roof in rapidly deforming zones through localized active primary anchor bolting. In slower deforming zones, secondary active anchor bolting is recommended for the remaining parts of the roadway roof and the side supports. In stable zones, cables anchor bolting support are implemented. A phased control technology system for the zonal management of surrounding rock in TBM excavation roadway was developed, and optimal parameters were determined using numerical simulations. The phased and zonal control technology was successfully applied at Shoushan No. 1 coal mine, achieving a maximum excavation speed of 623 m per month. This study provides valuable insights into the application of rapid excavation technology by TBM under similar conditions.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 3","pages":"1239-1254"},"PeriodicalIF":3.5,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.2059","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Copper Benzene-1,3,5-Tricarboxylate Metal-Organic Framework Performance as a Heterogeneous Catalyst for Biodiesel Production","authors":"Jason Ik C. Lau,&nbsp;Sabeeha N. B. A. Khadaroo,&nbsp;Jiuan J. Chew,&nbsp;Deni S. Khaerudini,&nbsp;Agus Saptoro,&nbsp;Jaka Sunarso","doi":"10.1002/ese3.2062","DOIUrl":"https://doi.org/10.1002/ese3.2062","url":null,"abstract":"<p>The increasing demand for sustainable fuels has driven extensive research into biodiesel production, which typically relies on the use of active catalysts to facilitate the transesterification of oils. While homogeneous catalysts are commonly employed, they pose challenges in terms of recyclability and environmental impact, leading to growing interest in heterogeneous catalysts. Among these, metal-organic frameworks (MOFs) have gained attention due to their high surface area and tuneable properties. This study investigates the performance of a copper benzene-<b>1</b>,<b>3</b>,<b>5</b>-tricarboxylate (CuBTC) MOF as an effective heterogeneous catalyst for biodiesel production. CuBTC was synthesised via solvothermal method and thoroughly characterised using scanning electron microscopy to examine the morphology, powder X-ray diffraction to determine the crystalline structure, and Fourier transform infrared spectroscopy to identify the functional groups. The synthesised CuBTC has an octahedral morphology and successfully catalysed biodiesel production with unsaturated fatty acids within the C₁₆ to C₁₈ range, achieving a yield of 78.6% using 1 wt.% CuBTC and a 10:1 methanol-to-oil molar ratio. The iodine value of the produced biodiesel was 59.3 g I/g, and the higher heating value was 39.2 MJ/kg. Recycled CuBTC maintained its efficacy, yielding 76.6% and 63.4% fatty acid methyl esters in the first and second recycling runs, respectively, with 16.6% and 15.3% of C₁₆ to C₁₈ fatty acids. The produced biodiesel met quality standards outlined in EN 14214, highlighting CuBTC's potential for sustainable biodiesel production.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 3","pages":"1146-1155"},"PeriodicalIF":3.5,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.2062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Investigation of the Dynamic Impact Failure of Bolted Rock With Different Anchoring Angles","authors":"Peng-qi Qiu,&nbsp;Wen-wei Wang,&nbsp;Kai Wang,&nbsp;Jian-guo Ning,&nbsp;Xiao-qiang Zhang,&nbsp;Chun-li Zhao,&nbsp;Qiang Xu,&nbsp;Hai-tao Zong,&nbsp;Ting-ting Cai","doi":"10.1002/ese3.2032","DOIUrl":"https://doi.org/10.1002/ese3.2032","url":null,"abstract":"<p>Bolt support mechanisms represent a key technique to support the surrounding rock in coal mines. In deep rock engineering applications, the bolt-supported structure of the surrounding rock of a deep roadway under high bearing stress may fail under dynamic loads such as those of blasting vibrations and earthquake motion. In this study, dynamic uniaxial compression tests were conducted on steel bar reinforced rock to investigate the rockbolt performance under dynamic loading. The deformation of the specimen surface and rockbolt was recorded during the test. The strengths and failure modes of the bolted rock samples were investigated. The results show that the bolt and rock deform asynchronously when the bolted specimen is subjected to a dynamic load, and the time of the asynchronous deformation of the specimens with different bolt angles is considerably different. When the stress wave acts along the direction of the bolt, it is more likely to cause the failure of the bolted specimen. Anchorage agents should be employed to realize the synchronous deformation of the bolt and rock mass. The slip and dislocation of the anchorage agent/rock surface and anchorage agent/bolt interface are the key factors influencing the failure of bolted specimens. The influence of a dynamic stress wave on the surrounding rock support structure of a deep roadway can be effectively reduced by improving the antisliding characteristics of the anchoring agent and increasing the bolt density. The research results can provide theoretical guidance and serve as a reference to realize the reinforcement engineering of underground permanent chambers and roadways.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 2","pages":"752-764"},"PeriodicalIF":3.5,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.2032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on Improving Liquid Carrying Performance of Horizontal Wells With Swirl Jet Composite Device","authors":"Huizhen Liang,&nbsp;Lin Mu,&nbsp;Jinyong Li,&nbsp;Chengzhen Li,&nbsp;Jian Ma","doi":"10.1002/ese3.2060","DOIUrl":"https://doi.org/10.1002/ese3.2060","url":null,"abstract":"<p>In the later stages of horizontal gas well development, due to insufficient formation energy, the stratified flow of gas and liquid in the horizontal section generates a decrease in the well's liquid-carrying capacity, accumulating liquid in the wellbore. Since the flow pattern of gas–liquid two-phase flow in horizontal wells is significantly different from that in vertical wells, existing vertical well liquid removal and gas production technologies cannot be directly applied to address the liquid accumulation issues in horizontal wells. This paper presents a swirl jet composite device that, through the combination of a spiral guide belt and an internal flow channel, effectively integrates the jet and vortex effects, capable of transforming the stratified flow in the horizontal section into an annular flow, thereby enhancing the gas well's liquid-carrying capacity. This study applies a combination of theoretical, experimental, and simulation methods to conduct computational fluid dynamics analysis on the device's ability to improve the gas well's liquid-carrying capacity. It deeply investigates the flow characteristics of the gas–liquid two-phase flow within the device. The results indicate that the device can not only achieve gas–liquid separation by transforming the flow regime from laminar to an orderly annular flow but also increase the axial velocity to extend the effective distance of the swirling section. Compared with the case without the device installed, the liquid phase volume fraction at the bottom of the well is reduced by 85.9%, and the liquid holdup is reduced by 38%. This demonstrates that compared to traditional technologies such as gas-lift dewatering and gas production, the device can enhance the liquid-carrying capacity of horizontal wells and effectively address the issue of liquid accumulation in horizontal wells. It provides theoretical guidance and a practical basis for future research on applying swirl jet composite devices to improve the liquid-carrying capacity of horizontal wells.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 3","pages":"1223-1238"},"PeriodicalIF":3.5,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.2060","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143602513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2 Oil Displacement and Geological Storage Status and Prospects","authors":"Fengqi Tan,&nbsp;Ruihai Jiang,&nbsp;Chunmiao Ma,&nbsp;Yuqian Jing,&nbsp;Kai Chen,&nbsp;Yu Lu","doi":"10.1002/ese3.2051","DOIUrl":"https://doi.org/10.1002/ese3.2051","url":null,"abstract":"<p>CCUS-enhanced oil recovery (EOR) technology relies on the unique properties of CO₂ gas in the process of efficient oil displacement while achieving effective storage, which has become one of the most economical and effective measures for reducing greenhouse gas emissions in today's society and is important for helping to realize the global strategic goal of carbon neutrality. Based on previous research results, this review presents the oil displacement and geological storage mechanisms of CO₂ in micropores in the oil and gas fields, and summarizes their respective influencing factors. At the same time, it also summarizes the current research status of CO₂-EOR and geological storage from the perspectives of laboratory experiments and numerical simulations. Moreover, it provides a detailed overview of four key technologies namely, miscibility improvement, swept volume expansion, storage potential assessment and storage safety monitoring, and their field applications. On this basis, this review compares the development status of field applications in Developed Countries and China, analyzes the problems of CCUS-EOR technology in theoretical research, technology research and development and project industrialization, and points out the future development directions. Results are presented that research on CO₂-EOR and geological storage in Developed Countries such as the United States started early and developed rapidly. A relatively complete industrial chain system has been formed, and the scale and number of CCUS-EOR projects are far ahead those in China. In China, relevant research started relatively late and developed slowly at the early stage. In recent years, due to the notable attention given to climate change and carbon storage, development efforts in China have gradually intensified. At present, there are more than 20 large-scale CCUS-EOR demonstration projects in operation, which are preliminarily ready for industrial promotion. Notably, the world has continued to increase its attention to CCUS-EOR projects based on national conditions, further improving policy guidance mechanisms, strengthening research and development efforts, promoting the construction of the full-process industry chain, achieving large-scale and refined development, and providing theoretical guidance and technical support for realizing the strategic goal of carbon neutrality.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 2","pages":"475-511"},"PeriodicalIF":3.5,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.2051","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Source Rock Characteristics and Petroleum-Geological Significance of Paleogene Niubao Formation in the Nima Basin, Central Tibet, China","authors":"Rui Wang,&nbsp;Xinhe Wu,&nbsp;Guoqiang Zhang,&nbsp;Dujie Hou","doi":"10.1002/ese3.2045","DOIUrl":"https://doi.org/10.1002/ese3.2045","url":null,"abstract":"<p>Nima Basin, as a typical Tethys area, is a Cenozoic oil-bearing basin in the middle of Qinghai-Tibet Plateau, which is expected to become an important target for petroleum exploration. The main controlling factors and models of organic matter enrichment are not yet clear. To identify the organic geochemical characteristics of high-quality source rocks and the main controlling factors of their formation, this study analyzes the paleoclimate and paleo-salinity indexes based on the analysis of the major and trace elements through systematic sampling of the muddy sediments of Niubao Formation in Well Shuangdi 1, Cebuco Depression. The results show that the organic matter of the E_1-2n source rocks in Nima Basin is differentially enriched, which shows that the organic matter of the middle E_1-2n source rocks is more enriched than that of the upper E_1-2n source rocks. Hydrocarbon source rocks of the middle E_1-2n are mainly of type I organic matter, while those of the upper E_1-2n are mainly of type Ⅱ₁ organic matter, both of which are in the mature stage. Organic matter enrichment is primarily governed by a combination of climate and redox conditions, with humid climate and reducing environments emerging as the dominant factors, whereas salinity exerts a lesser influence. On the one hand, this study can supplement the accumulation mechanism of organic matter in the Tethys domain in Asia; on the other hand, it will fill the gap in the geological research of Nima Basin, contributing to the prediction and exploration of oil and gas resources in the Nima Basin.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 2","pages":"878-893"},"PeriodicalIF":3.5,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.2045","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated Fuzzy-Knapsack Based Demand Response Energy Management System for Smart Grid Buildings","authors":"Zulfiqar Memon,&nbsp;Fawad Azeem,&nbsp;Tareq Manzoor,&nbsp;Habib Ullah Manzoor","doi":"10.1002/ese3.2041","DOIUrl":"https://doi.org/10.1002/ese3.2041","url":null,"abstract":"<p>Demand response schemes play a vital role in managing the load demand. However, the demand response applicability is pre-descriptive where loads to be managed are pre-selected majorly based on the availability of renewable energy and lower tariff rates. However, in hospitality buildings such as hotels, user comfort cannot be compromised by the cost of energy. The arrival of guests is a unique parameter that drives the load consumption regardless of the availability of free energy or lower tariff rates. During higher guest arrivals, pre-descriptive loads meant to be scheduled during low renewable energy availability and higher tariff rates cannot be compromised over guest comfort. Similarly, pre-descriptive loads that are already not in operation at the time of low guest arrivals will result in wastage of green power at times of its availability. There is a need to develop an automated demand response that has the liberty to select any load for shifting to renewable energy based on the power they consume to utilize maximum resources without compromising guest comfort. In this research, a novel automated demand response scheme is developed that intelligently selects any load from the building in real time while mapping it with the available capacity of renewable power. A cascaded fuzzy integrated knapsack algorithm is designed for intelligent selection of loads participation in demand response. Based on the availability of solar PV power, grid rates, and load operations, fuzzy designates values to the random operational loads. In the second step, the designated values are given to the Knapsack algorithm to find the best optimal responsive loads to be operated at that time. In the proposed approach, random loads were selected for shifting to renewable power without any prior load selection, which enhances the operation and usability of solar PV power. It was found that 88%–100% of solar PV power was utilized under all simulated scenarios of operation.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 2","pages":"862-877"},"PeriodicalIF":3.5,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.2041","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}