Pub Date : 2021-04-03DOI: 10.1080/23080477.2021.1913365
Ashiwani Kumar, R. Shankar
ABSTRACT The paper addresses the Automatic Generation Control (AGC) of the interconnected two-area power system under deregulated environment. Area 1 includes thermal system, Distributed Generation (DG), and aggregate Electric Vehicle (EV) wheras area 2 contains thermal system, gas system, and aggregate electric vehicle. Nonlinearities such as Generation Rate Constraint (GRC), Governor Dead Band (GDB), Boiler Dynamics (BD), and Communication Delay (CD) are explored in the proposed test system to achieve a realistic approach. For considering cross coupling effect between excitation system and AGC, an exact model has been investigated. A novel cascade controller has been proposed to achieve the desired goal. For optimum values of controller, new novel Quasi Opposition Lion Optimization Algorithm (QOLOA) has been suggested and implemented for the studied system. The sensitivity analysis study was performed to assess the robustness of the proposed controller by varying system parameters. System parameters are varied by ±25%, ±35%, and ±50%, and the result shows the robustness of the controller and algorithm For the proposed controller, Figure of Demerit (FOD) is compared with various algorithms, and the Integral square Error (ISE) is taken as objective function. The optimistic results shows the effectiveness & superiority of proposed AGC in different scenario of deregulation. GRAPHICAL ABSTRACT
{"title":"A novel Quasi Opposition based controller design for hybrid AGC considering renewable energy and excitation cross coupling effect","authors":"Ashiwani Kumar, R. Shankar","doi":"10.1080/23080477.2021.1913365","DOIUrl":"https://doi.org/10.1080/23080477.2021.1913365","url":null,"abstract":"ABSTRACT The paper addresses the Automatic Generation Control (AGC) of the interconnected two-area power system under deregulated environment. Area 1 includes thermal system, Distributed Generation (DG), and aggregate Electric Vehicle (EV) wheras area 2 contains thermal system, gas system, and aggregate electric vehicle. Nonlinearities such as Generation Rate Constraint (GRC), Governor Dead Band (GDB), Boiler Dynamics (BD), and Communication Delay (CD) are explored in the proposed test system to achieve a realistic approach. For considering cross coupling effect between excitation system and AGC, an exact model has been investigated. A novel cascade controller has been proposed to achieve the desired goal. For optimum values of controller, new novel Quasi Opposition Lion Optimization Algorithm (QOLOA) has been suggested and implemented for the studied system. The sensitivity analysis study was performed to assess the robustness of the proposed controller by varying system parameters. System parameters are varied by ±25%, ±35%, and ±50%, and the result shows the robustness of the controller and algorithm For the proposed controller, Figure of Demerit (FOD) is compared with various algorithms, and the Integral square Error (ISE) is taken as objective function. The optimistic results shows the effectiveness & superiority of proposed AGC in different scenario of deregulation. GRAPHICAL ABSTRACT","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"9 1","pages":"147 - 164"},"PeriodicalIF":2.3,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23080477.2021.1913365","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46300752","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}
Pub Date : 2021-04-03DOI: 10.1080/23080477.2021.1901340
M. Tariq, Mohsin Karim Ansari, F. Rahman, M. A. Rahman, I. Ashraf
ABSTRACT The world’s future is with renewable energy resources and solar energy which is a clean and sustainable energy resource. Solar PV module is exposed to external environments where dust deposits are a major derogatory factor. The soil and its effect on the performance of the solar module is usually a matter of high concern for the areas of high density and high frequency of low frequency and low-intensity rainfall. Due to the PV module, the effects of dust are examined in relation to various types of dust concentration and spectral transmission. For examination and analysis, experimental investigation is reported in the paper. The investigation shows that dust effects are accumulated, i.e., the performance of the PV module decreases over time with increasing statements, or until it is cleaned manually or through rain. It is also observed that the inclination of the PV installation plays a major role in the quantity of dust deposited on the angle equipment, where the concentration of dust is reduced as a result of higher tilt angles. Aligarh, with its irregular environmental conditions, suffers from high air pollution and minimum rainfall during dry winter. In this study, the impact of dust on the PV module is examined in relation to the dust density of the dust and the meteorological variables for Aligarh, with the purpose to calculate the drop equation describing efficiency loss. Graphical abstract
{"title":"Effect of Soiling on the Performance of Solar PV Modules: A Case Study of Aligarh","authors":"M. Tariq, Mohsin Karim Ansari, F. Rahman, M. A. Rahman, I. Ashraf","doi":"10.1080/23080477.2021.1901340","DOIUrl":"https://doi.org/10.1080/23080477.2021.1901340","url":null,"abstract":"ABSTRACT The world’s future is with renewable energy resources and solar energy which is a clean and sustainable energy resource. Solar PV module is exposed to external environments where dust deposits are a major derogatory factor. The soil and its effect on the performance of the solar module is usually a matter of high concern for the areas of high density and high frequency of low frequency and low-intensity rainfall. Due to the PV module, the effects of dust are examined in relation to various types of dust concentration and spectral transmission. For examination and analysis, experimental investigation is reported in the paper. The investigation shows that dust effects are accumulated, i.e., the performance of the PV module decreases over time with increasing statements, or until it is cleaned manually or through rain. It is also observed that the inclination of the PV installation plays a major role in the quantity of dust deposited on the angle equipment, where the concentration of dust is reduced as a result of higher tilt angles. Aligarh, with its irregular environmental conditions, suffers from high air pollution and minimum rainfall during dry winter. In this study, the impact of dust on the PV module is examined in relation to the dust density of the dust and the meteorological variables for Aligarh, with the purpose to calculate the drop equation describing efficiency loss. Graphical abstract","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"9 1","pages":"121 - 132"},"PeriodicalIF":2.3,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23080477.2021.1901340","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42791980","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}
Pub Date : 2021-04-03DOI: 10.1080/23080477.2021.1907700
A. Arifutzzaman, A. Ismail, Z. Alam, A. Khan, Navid Aslfattahi, R. Saidur
ABSTRACT Reasoning of particular mechanism of anomalous thermal transport behaviors is not identified yet for the nanofluids. In this research, the thermal conductivity of maghemite (MH) nanoparticles dispersed deionized water (DW) nanofluids (MH/DW) has been evaluated for the first time using the modified effective medium theories (EMTs). EMTs have been modified with the consideration of static and dynamic effects combinedly for the analysis of anomalous behaviors of thermal conductivity enhancements of the spherical nanoparticles dispersed nanofluids. MH nanoparticles (~20 nm) were synthesized using chemical co-precipitation techniques. MH/DW nanofluids were prepared with the varying MH nanoparticles loading in DW and thermal conductivity was measured using KD2 pro device. The thermal conductivity enhancement (~32 %) was found to be increased linearly with the increasing MH nanoparticle concentration and nonlinearly with the increasing temperature. Existing Maxwell and Maxwell Gantt EMA (MG-EMA) models exhibited awful under-prediction from experimental thermal conductivities of MH/DW nanofluids. Modified model with considering static and dynamic mechanisms of MH nanoparticles combinedly showed reasonably very good agreement with the experimental thermal conductivities of MH/DW nanofluids at elevated temperature. This modified model opens the new windows to analyze the insight of the thermophysical properties of various types of nanofluids by introducing potential parameters. Graphical abstract
纳米流体异常热输运行为的特殊机理尚未确定。本研究首次利用改进的有效介质理论(EMTs)评价了磁铁矿(MH)纳米颗粒分散去离子水(DW)纳米流体(MH/DW)的导热性。为了分析球形纳米颗粒分散纳米流体的热导率增强的异常行为，对emt进行了修正，同时考虑了静态和动态效应。采用化学共沉淀法合成了~20 nm的MH纳米颗粒。在DW中加入不同的MH纳米颗粒，制备了MH/DW纳米流体，并使用KD2 pro装置测量了热导率。热导率随MH纳米颗粒浓度的增加呈线性增加(~ 32%)，随温度的升高呈非线性增加。现有的Maxwell和Maxwell Gantt EMA (MG-EMA)模型对MH/DW纳米流体的实验热导率存在严重的预测不足。同时考虑MH纳米颗粒静态和动态机制的修正模型与MH/DW纳米流体在高温下的实验热导率具有相当好的一致性。修正后的模型通过引入势参数，为分析不同类型纳米流体的热物理性质打开了新的窗口。图形抽象
{"title":"Static and Dynamic Combined Effects on the Thermal Conductivity of Water Based Ironoxide Nanofluids: Experiments and Theories","authors":"A. Arifutzzaman, A. Ismail, Z. Alam, A. Khan, Navid Aslfattahi, R. Saidur","doi":"10.1080/23080477.2021.1907700","DOIUrl":"https://doi.org/10.1080/23080477.2021.1907700","url":null,"abstract":"ABSTRACT Reasoning of particular mechanism of anomalous thermal transport behaviors is not identified yet for the nanofluids. In this research, the thermal conductivity of maghemite (MH) nanoparticles dispersed deionized water (DW) nanofluids (MH/DW) has been evaluated for the first time using the modified effective medium theories (EMTs). EMTs have been modified with the consideration of static and dynamic effects combinedly for the analysis of anomalous behaviors of thermal conductivity enhancements of the spherical nanoparticles dispersed nanofluids. MH nanoparticles (~20 nm) were synthesized using chemical co-precipitation techniques. MH/DW nanofluids were prepared with the varying MH nanoparticles loading in DW and thermal conductivity was measured using KD2 pro device. The thermal conductivity enhancement (~32 %) was found to be increased linearly with the increasing MH nanoparticle concentration and nonlinearly with the increasing temperature. Existing Maxwell and Maxwell Gantt EMA (MG-EMA) models exhibited awful under-prediction from experimental thermal conductivities of MH/DW nanofluids. Modified model with considering static and dynamic mechanisms of MH nanoparticles combinedly showed reasonably very good agreement with the experimental thermal conductivities of MH/DW nanofluids at elevated temperature. This modified model opens the new windows to analyze the insight of the thermophysical properties of various types of nanofluids by introducing potential parameters. Graphical abstract","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"9 1","pages":"133 - 146"},"PeriodicalIF":2.3,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23080477.2021.1907700","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46047941","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}
Pub Date : 2021-03-16DOI: 10.1080/23080477.2021.1901186
Aysar Tuama Al-Awadi
ABSTRACT The countermeasures versus local scour around bridge piers are essential for safe bridge hydraulic design. In this study, laboratory experiments were conducted to investigate the effectiveness of downstream bed sill location as countermeasure method to decrease the local scour under clear water conditions for single cylindrical pier. Four flow intensities were tested (from 0.48 to 0.96 of the threshold velocity of sediment) with five different bed sill locations (from 0 to 4 pier diameter). The measured scour depths were compared with that observed at the exposed pier (four tests for unprotected pier) to estimate the percentage reduction in scour depth for each flow intensity and to assess the aspects of bed sill location. The results revealed a significant effect of bed sill location on decreasing the scour depth with in downstream distance equal to pier diameter. Accordingly, the percentage decrease in scour depth was ranged from 4 to 30%. New empirical formula has been proposed to estimate scour depth near circular bridge piers according to different bed sill configuration. Graphical abstract
{"title":"Aspects of Downstream Bed Sill Location for Investigating the Countermeasure with Local Scour around Cylindrical Bridge Piers","authors":"Aysar Tuama Al-Awadi","doi":"10.1080/23080477.2021.1901186","DOIUrl":"https://doi.org/10.1080/23080477.2021.1901186","url":null,"abstract":"ABSTRACT The countermeasures versus local scour around bridge piers are essential for safe bridge hydraulic design. In this study, laboratory experiments were conducted to investigate the effectiveness of downstream bed sill location as countermeasure method to decrease the local scour under clear water conditions for single cylindrical pier. Four flow intensities were tested (from 0.48 to 0.96 of the threshold velocity of sediment) with five different bed sill locations (from 0 to 4 pier diameter). The measured scour depths were compared with that observed at the exposed pier (four tests for unprotected pier) to estimate the percentage reduction in scour depth for each flow intensity and to assess the aspects of bed sill location. The results revealed a significant effect of bed sill location on decreasing the scour depth with in downstream distance equal to pier diameter. Accordingly, the percentage decrease in scour depth was ranged from 4 to 30%. New empirical formula has been proposed to estimate scour depth near circular bridge piers according to different bed sill configuration. Graphical abstract","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"9 1","pages":"113 - 120"},"PeriodicalIF":2.3,"publicationDate":"2021-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23080477.2021.1901186","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43821307","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}
Pub Date : 2021-03-14DOI: 10.1080/23080477.2021.1898794
Ceyda Kocabaş, A. Savaş
ABSTRACT In this study, the boiler blowdown was systematically examined and, the risks that increase the energy loss was determined using the potential Failure Mode and Effects Analysis (FMEA) method. Risk priority numbers (RPN) were calculated for each potential risk. It was revealed that ‘Performing more blowdown than it is necessary’ has the highest priority score. Improvement opportunities were identified by using the tree diagram, which is one of the process improvement techniques. Three suggestions were developed, such as flash steam heat recovery, reduction of water conductivity using the reverse osmosis technique, and the use of both methods. Repayment periods were calculated for each investment. If the flash steam unit and reverse osmosis system are applied together, 113.5 KW/h energy can be saved. It has been demonstrated that the FMEA technique can be used in the investigation and reduction of energy loss. Graphical Abstract
{"title":"Reducing Energy Losses of Steam Boilers Caused by Blowdown with Using the FMEA Method","authors":"Ceyda Kocabaş, A. Savaş","doi":"10.1080/23080477.2021.1898794","DOIUrl":"https://doi.org/10.1080/23080477.2021.1898794","url":null,"abstract":"ABSTRACT In this study, the boiler blowdown was systematically examined and, the risks that increase the energy loss was determined using the potential Failure Mode and Effects Analysis (FMEA) method. Risk priority numbers (RPN) were calculated for each potential risk. It was revealed that ‘Performing more blowdown than it is necessary’ has the highest priority score. Improvement opportunities were identified by using the tree diagram, which is one of the process improvement techniques. Three suggestions were developed, such as flash steam heat recovery, reduction of water conductivity using the reverse osmosis technique, and the use of both methods. Repayment periods were calculated for each investment. If the flash steam unit and reverse osmosis system are applied together, 113.5 KW/h energy can be saved. It has been demonstrated that the FMEA technique can be used in the investigation and reduction of energy loss. Graphical Abstract","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"9 1","pages":"70 - 79"},"PeriodicalIF":2.3,"publicationDate":"2021-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23080477.2021.1898794","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48655193","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}
Pub Date : 2021-03-14DOI: 10.1080/23080477.2021.1898795
A. A. Mutasher, R. J. Al-Saadi, F. Al-Mohammed
ABSTRACT Nowadays, with the increase of the demand for freshwater used to irrigate the agricultural lands, in the exchange for the severe shortage in the sources of the freshwater supply, the finding of alternatives becomes persistent need to compensate this shortage. One of the important alternatives is the reuse of the drainage water for irrigation. In the present study, the quality of the agricultural drainage water of the Al-Husseiniya irrigation project of Karbala governorate in Iraq is assessed and managed in order to reuse this water for irrigation. The Brazilian Water Quality Index (IWQI) model is used to evaluate the quality of the drainage water and the river water within the study area. As well, the quality of drainage water of six selected stations is improved by blending this water with the river water by using nine blending ratios. It is found that 75% of the values of the IWQI classification category of the drainage water are within the category of severe restriction, SR, and 25% of these values are within the category of high restriction, HR. Also, the results showed that the river water quality is within the IWQI category of low restriction, LR. Graphical abstarctLayout of Al-Hussainiyah irrigation project (a), and (b) The monthly variation of the (IWQI) values of various stations.
{"title":"Assessment and Management of Drainage Water Quality for Reuse in Irrigation Projects","authors":"A. A. Mutasher, R. J. Al-Saadi, F. Al-Mohammed","doi":"10.1080/23080477.2021.1898795","DOIUrl":"https://doi.org/10.1080/23080477.2021.1898795","url":null,"abstract":"ABSTRACT Nowadays, with the increase of the demand for freshwater used to irrigate the agricultural lands, in the exchange for the severe shortage in the sources of the freshwater supply, the finding of alternatives becomes persistent need to compensate this shortage. One of the important alternatives is the reuse of the drainage water for irrigation. In the present study, the quality of the agricultural drainage water of the Al-Husseiniya irrigation project of Karbala governorate in Iraq is assessed and managed in order to reuse this water for irrigation. The Brazilian Water Quality Index (IWQI) model is used to evaluate the quality of the drainage water and the river water within the study area. As well, the quality of drainage water of six selected stations is improved by blending this water with the river water by using nine blending ratios. It is found that 75% of the values of the IWQI classification category of the drainage water are within the category of severe restriction, SR, and 25% of these values are within the category of high restriction, HR. Also, the results showed that the river water quality is within the IWQI category of low restriction, LR. Graphical abstarctLayout of Al-Hussainiyah irrigation project (a), and (b) The monthly variation of the (IWQI) values of various stations.","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"9 1","pages":"80 - 102"},"PeriodicalIF":2.3,"publicationDate":"2021-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23080477.2021.1898795","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43224422","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}
Pub Date : 2021-03-06DOI: 10.1080/23080477.2021.1895963
F. Jabbar
ABSTRACT Poor tensile strength and brittle nature are considered to be a major weakness in epoxy resin. Herein, thermogravimetric decomposition is used to investigate the effect of the addition of calcium oxides on the thermal degradation of the epoxy resin. Four composites with 5%, 7.5%, 10%, and 15 wt % calcium oxide are prepared with epoxy resin as a matrix substance. Arrhenius equation is used to evaluate the activation energies of the composites and the findings are tabulated. The findings indicate that the addition of calcium oxides as a filler contributes to an enhancement in the thermal stability of the components by inhibiting the process of thermal decomposition of epoxy resin. The composition with a ratio of 10% by weight of calcium oxide/epoxy shows a good and distinct stability, which is evidenced by the increasing in the thermal decomposition of the composite 10% CaO filler/epoxy at 400°C compared with other composites. Graphical abstract
{"title":"Study the Thermal Properties of Epoxy Resin Reinforced with Calcium Oxide Fibers","authors":"F. Jabbar","doi":"10.1080/23080477.2021.1895963","DOIUrl":"https://doi.org/10.1080/23080477.2021.1895963","url":null,"abstract":"ABSTRACT Poor tensile strength and brittle nature are considered to be a major weakness in epoxy resin. Herein, thermogravimetric decomposition is used to investigate the effect of the addition of calcium oxides on the thermal degradation of the epoxy resin. Four composites with 5%, 7.5%, 10%, and 15 wt % calcium oxide are prepared with epoxy resin as a matrix substance. Arrhenius equation is used to evaluate the activation energies of the composites and the findings are tabulated. The findings indicate that the addition of calcium oxides as a filler contributes to an enhancement in the thermal stability of the components by inhibiting the process of thermal decomposition of epoxy resin. The composition with a ratio of 10% by weight of calcium oxide/epoxy shows a good and distinct stability, which is evidenced by the increasing in the thermal decomposition of the composite 10% CaO filler/epoxy at 400°C compared with other composites. Graphical abstract","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"9 1","pages":"61 - 69"},"PeriodicalIF":2.3,"publicationDate":"2021-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23080477.2021.1895963","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48155422","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}
Pub Date : 2021-01-02DOI: 10.1080/23080477.2021.1879430
Amit Rai, A. Shrivastava, K. Jana
ABSTRACT Air pollution is a primary environmental concern worldwide. The major sources of this pollution are the manufacturing industry, vehicles, diesel generators, and thermal power plants. For limiting this pollution, the resolution is adopted in Paris Climate Agreement to reduce the power dependency on thermal power plants. This work aims to find a solution for phasing out the thermal plant with solar plants for sub-tropical regions of the world. Moreover, the effect of the Air Pollution Index (API) on solar radiation is also predicted with time-series neural network. As a case study, to replace thermal power plant in sub-tropic regions, four metropolitan cities of India are selected. The performance ratio and energy yield of the proposed solar power plants have an average of 76.05% and 1,167,447 MWh/year values, respectively, which shows that the proposed power plants are a viable solution to address the aforementioned problem. The potential of the proposed power plant for pollution reduction is also quantified and discussed in detail, and the effect of PM2.5 on solar generation is also reported.
{"title":"A Solution for Power Crisis and Environment Pollution from Electricity Generation - A Study of Sub-tropical Regions","authors":"Amit Rai, A. Shrivastava, K. Jana","doi":"10.1080/23080477.2021.1879430","DOIUrl":"https://doi.org/10.1080/23080477.2021.1879430","url":null,"abstract":"ABSTRACT Air pollution is a primary environmental concern worldwide. The major sources of this pollution are the manufacturing industry, vehicles, diesel generators, and thermal power plants. For limiting this pollution, the resolution is adopted in Paris Climate Agreement to reduce the power dependency on thermal power plants. This work aims to find a solution for phasing out the thermal plant with solar plants for sub-tropical regions of the world. Moreover, the effect of the Air Pollution Index (API) on solar radiation is also predicted with time-series neural network. As a case study, to replace thermal power plant in sub-tropic regions, four metropolitan cities of India are selected. The performance ratio and energy yield of the proposed solar power plants have an average of 76.05% and 1,167,447 MWh/year values, respectively, which shows that the proposed power plants are a viable solution to address the aforementioned problem. The potential of the proposed power plant for pollution reduction is also quantified and discussed in detail, and the effect of PM2.5 on solar generation is also reported.","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"9 1","pages":"40 - 50"},"PeriodicalIF":2.3,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23080477.2021.1879430","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47749703","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}
Pub Date : 2021-01-02DOI: 10.1080/23080477.2021.1889259
J. Ismailova, D. Delikesheva, B. Akhymbayeva, A. Logvinenko, K. Narikov
ABSTRACT As it is known, many reservoir formations have an irregular permeability profile. Such heterogeneity leads to irregular profiles of the injected water progression and its unequal distribution, if traditional technology is used. High heterogeneity of the reservoir leads to early water breakthroughs and clogging of production wells, in addition: some areas containing naphtha remain difficult to access. The relevance of the issue under consideration is due to the demand to increase oil recovery from reservoirs. The purpose of the paper is to analyze methods of influencing a non-uniform formation. This paper provides an overview of studies aimed at greater reservoir coverage by exposure when developing non-uniform reservoirs; The main parameters of the formation that affect the decrease in the coverage of the reservoir by exposure are identified, and the improvement of the impact on the inhomogeneous formation by changing the density of perforation holes is considered. The materials of the paper are of practical value, since hydrodynamic modeling was carried out to determine the effect of changes in the density of perforations on the coverage of the formation. Graphical abstract
{"title":"Improvement of Sweep Efficiency in a Heterogeneous Reservoir","authors":"J. Ismailova, D. Delikesheva, B. Akhymbayeva, A. Logvinenko, K. Narikov","doi":"10.1080/23080477.2021.1889259","DOIUrl":"https://doi.org/10.1080/23080477.2021.1889259","url":null,"abstract":"ABSTRACT As it is known, many reservoir formations have an irregular permeability profile. Such heterogeneity leads to irregular profiles of the injected water progression and its unequal distribution, if traditional technology is used. High heterogeneity of the reservoir leads to early water breakthroughs and clogging of production wells, in addition: some areas containing naphtha remain difficult to access. The relevance of the issue under consideration is due to the demand to increase oil recovery from reservoirs. The purpose of the paper is to analyze methods of influencing a non-uniform formation. This paper provides an overview of studies aimed at greater reservoir coverage by exposure when developing non-uniform reservoirs; The main parameters of the formation that affect the decrease in the coverage of the reservoir by exposure are identified, and the improvement of the impact on the inhomogeneous formation by changing the density of perforation holes is considered. The materials of the paper are of practical value, since hydrodynamic modeling was carried out to determine the effect of changes in the density of perforations on the coverage of the formation. Graphical abstract","PeriodicalId":53436,"journal":{"name":"Smart Science","volume":"9 1","pages":"51 - 59"},"PeriodicalIF":2.3,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/23080477.2021.1889259","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47471114","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}
Pub Date : 2021-01-02DOI: 10.1080/23080477.2021.1871799
B. S. B. Dewantara, B. N. D. Ariyadi
ABSTRACT Navigation is one of the capabilities that any mobile robot must-have when moving from one position to another. How to move effectively becomes crucial when a navigation skill must be practiced by a mobile robot soccer in a dynamic environment with high speed. This paper proposes the use of the Fuzzy-based Social Force Model (F-SFM) to control the navigation of a soccer robot. In the framework of the Social Force Model (SFM), the speed and direction of navigation are determined by the resultant force calculating from the attractive force by the goal and the repulsive force by obstacles. The amount of repulsive force generated by each obstacle is largely determined by the stimulus received by the robot and the pre-defined SFM parameters setting. Here, the Fuzzy Inference System (FIS) is used to adapt to one SFM parameter, i.e., gain factor, , based on the stimulus received, namely the relative distance of the obstacle, , and its direction, . With the ability of parameter to change adaptively, the reactivity and responsiveness of the robot can be controlled. Based on the experimental results using a realistic 3D simulator V-Rep, the implementation of adaptive SFM parameter values outperformed the constant one.
导航是移动机器人从一个位置移动到另一个位置时必须具备的功能之一。移动足球机器人在高速动态环境中进行导航训练时，如何有效地进行移动成为关键。本文提出利用基于模糊的社会力模型(F-SFM)来控制足球机器人的导航。在社会力模型(Social Force Model, SFM)的框架中，导航的速度和方向由目标的吸引力和障碍物的排斥力计算得到的合力决定。每个障碍物产生的排斥力的大小在很大程度上取决于机器人接收到的刺激和预定义的SFM参数设置。在这里，模糊推理系统(FIS)根据所接收到的刺激，即障碍物的相对距离和方向，来适应一个SFM参数，即增益因子。利用参数自适应变化的能力，可以对机器人的反应性和响应性进行控制。基于现实三维模拟器V-Rep的实验结果，自适应SFM参数值的实现优于恒定参数值的实现。
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