Pub Date : 2020-12-19DOI: 10.18799/24056537/2020/3/278
Özlem Yildiz, M. Yilmaz
The use of photovoltaic power plants is gradually increasing in order to reduce energy costs and greenhouse gas emissions at airports. Airports are suitable settlements for the installation of photovoltaic power plants as they have vast and free of shade areas that are not used in aviation activities. In this study, a 1 MWp photovoltaic power plant is proposed for Gaziantep Airport, Turkey. Performance, economic and environmental benefits of the proposed system were analyzed using the PVsyst simulation tool developed by the University of Geneva in Switzerland. The study demonstrates that Gaziantep Airport is suitable to installation of a grid-connected photovoltaic system and has a high solar energy resource. The proposed photovoltaic power plant at Gaziantep Airport is predicted to operate with an annual electricity generation of 1702.09 MWh, 78.6 % annual average performance ratio (PR), 19.43 % average capacity factor (CF) and 4.67 [h/d] annual average daily final yield.
{"title":"DESIGN AND SIMULATION ANALYSIS OF 1 MWP GRID-CONNECTED PHOTOVOLTAIC SYSTEM AT GAZIANTEP AIRPORT, TURKEY","authors":"Özlem Yildiz, M. Yilmaz","doi":"10.18799/24056537/2020/3/278","DOIUrl":"https://doi.org/10.18799/24056537/2020/3/278","url":null,"abstract":"The use of photovoltaic power plants is gradually increasing in order to reduce energy costs and greenhouse gas emissions at airports. Airports are suitable settlements for the installation of photovoltaic power plants as they have vast and free of shade areas that are not used in aviation activities. In this study, a 1 MWp photovoltaic power plant is proposed for Gaziantep Airport, Turkey. Performance, economic and environmental benefits of the proposed system were analyzed using the PVsyst simulation tool developed by the University of Geneva in Switzerland. The study demonstrates that Gaziantep Airport is suitable to installation of a grid-connected photovoltaic system and has a high solar energy resource. The proposed photovoltaic power plant at Gaziantep Airport is predicted to operate with an annual electricity generation of 1702.09 MWh, 78.6 % annual average performance ratio (PR), 19.43 % average capacity factor (CF) and 4.67 [h/d] annual average daily final yield.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72885862","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 : 2020-12-14DOI: 10.18799/24056537/2020/4/275
E. Plotnikov, I. Martemianova, H. Tin, D. Martemianov, H. Duong
In this work, we provide a literature review of water treatment techniques and propose a novel resource-efficient solution for the purification of aqueous media from microbiological contamination. Methods: Combined filter sorbents were developed and studied based on novel modified nanostructured filter materials. Synthetic and natural zeolite were used as the mineral base. The production technique was optimized to coat minerals with aluminum oxyhydroxide by means of a sol–gel process. Additional treatment with fine zinc particles obtained by electrospark dispersion was applied to modify the sorbent surface and obtain the surface charge required. Results: The antibacterial, sorption and physicochemical properties of the samples as well as their surface structures were investigated. According to broad microbiological tests, the possibility of purifying bacterial-contaminated water was demonstrated to an acceptable level by means of adsorption filtration. Conclusion: The proposed novel approach for water treatment against bacterial contamination can be considered an alternative to the currently available water treatment technologies.
{"title":"EFFECTIVE APPROACH TO WATER PURIFICATION FROM MICROBIOLOGICAL CONTAMINATION BASED ON NOVEL SURFACE-MODIFIED ADSORBENTS","authors":"E. Plotnikov, I. Martemianova, H. Tin, D. Martemianov, H. Duong","doi":"10.18799/24056537/2020/4/275","DOIUrl":"https://doi.org/10.18799/24056537/2020/4/275","url":null,"abstract":"In this work, we provide a literature review of water treatment techniques and propose a novel resource-efficient solution for the purification of aqueous media from microbiological contamination. Methods: Combined filter sorbents were developed and studied based on novel modified nanostructured filter materials. Synthetic and natural zeolite were used as the mineral base. The production technique was optimized to coat minerals with aluminum oxyhydroxide by means of a sol–gel process. Additional treatment with fine zinc particles obtained by electrospark dispersion was applied to modify the sorbent surface and obtain the surface charge required. Results: The antibacterial, sorption and physicochemical properties of the samples as well as their surface structures were investigated. According to broad microbiological tests, the possibility of purifying bacterial-contaminated water was demonstrated to an acceptable level by means of adsorption filtration. Conclusion: The proposed novel approach for water treatment against bacterial contamination can be considered an alternative to the currently available water treatment technologies.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"77 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78086332","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 : 2020-10-17DOI: 10.18799/24056537/2020/3/276
S. Nižetić
Photovoltaic (PV) technologies represent a key role in the ongoing energy transition towards the decarbonisation of convectional power systems and to reduce the harmful population impact to environment. Nowadays, the majority of market available photovoltaic PV technologies are silicon based with a usual energy conversion efficiency of less than 20%. The major drawbacks of the widely used silicon PV technologies are related to performance degradation due to aging as well as performance drops that occur during periods of elevated operating temperatures. In order to improve performance, as well as the lifetime of the PV systems, various cooling techniques have been investigated in the last two decades. The main goal of the specific cooling approaches for PV panels is to ensure efficient thermal management, as well as economic suitability. In this review paper, different cooling strategies are categorized, discussed and thoroughly elaborated in order to provide deep insight related to an expected performance improvement and economic viability. The main results of this review indicate that the cooling approaches for PVs can ensure a performance improvement ranging from about 3% up to 30%, depending if passive or active cooling approaches are applied. The main results also indicate that the economic viability as well as environmental suitability of the specific cooling approaches is not sufficiently discussed in the existing research literature.
{"title":"THERMAL MANAGEMENT OF SILICON PHOTOVOLTAIC PANELS: A REVIEW (In the press)","authors":"S. Nižetić","doi":"10.18799/24056537/2020/3/276","DOIUrl":"https://doi.org/10.18799/24056537/2020/3/276","url":null,"abstract":"Photovoltaic (PV) technologies represent a key role in the ongoing energy transition towards the decarbonisation of convectional power systems and to reduce the harmful population impact to environment. Nowadays, the majority of market available photovoltaic PV technologies are silicon based with a usual energy conversion efficiency of less than 20%. The major drawbacks of the widely used silicon PV technologies are related to performance degradation due to aging as well as performance drops that occur during periods of elevated operating temperatures. In order to improve performance, as well as the lifetime of the PV systems, various cooling techniques have been investigated in the last two decades. The main goal of the specific cooling approaches for PV panels is to ensure efficient thermal management, as well as economic suitability. In this review paper, different cooling strategies are categorized, discussed and thoroughly elaborated in order to provide deep insight related to an expected performance improvement and economic viability. The main results of this review indicate that the cooling approaches for PVs can ensure a performance improvement ranging from about 3% up to 30%, depending if passive or active cooling approaches are applied. The main results also indicate that the economic viability as well as environmental suitability of the specific cooling approaches is not sufficiently discussed in the existing research literature.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77311330","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 : 2020-08-26DOI: 10.18799/24056537/2020/2/262
Dr. Bhumika Das, B. Borah, S. Bhattacharyya
During drilling, different problems are encountered that can interfere with smooth drilling processes, including the accumulation of cuttings, reduced penetration rates, pipe sticking, loss of wellbore stability, and loss of circulation. These problems are generally encountered with conventional drilling mud, such as the bentonite–barite mud system. Formation damage is the most common problem encountered in bentonite mud systems with high solid content. In this work, we aimed to formulate two low-solid nondispersed (LSND) muds: carboxymethyl cellulose (CMC)–LSND mud and partially hydrolyzed polyacrylamide (PHPA)–LSND mud. A comparative analysis was performed to evaluate their property enhancements. LSND muds aid in maintaining hole stability and proper cutting removal. The results of this work show that the addition of both CMC and PHPA helps to improve drilling fluid properties; however, the PHPA–LSND mud was found to be superior. Shale swelling is a major concern in the petroleum industry, as it causes various other problems, such as pipe sticking, low penetration rates, and bit wear. The effect of these two LSND polymer muds in inhibiting shale swelling was analyzed using shale collected from the Champhai district of Mizoram, India.
{"title":"COMPARATIVE ANALYSIS OF CARBOXYMETHYL CELLULOSE AND PARTIALLY HYDROLYZED POLYACRYLAMIDE – LOW-SOLID NONDISPERSED DRILLING MUD WITH RESPECT TO PROPER-TY ENHANCEMENT AND SHALE INHIBITION","authors":"Dr. Bhumika Das, B. Borah, S. Bhattacharyya","doi":"10.18799/24056537/2020/2/262","DOIUrl":"https://doi.org/10.18799/24056537/2020/2/262","url":null,"abstract":"During drilling, different problems are encountered that can interfere with smooth drilling processes, including the accumulation of cuttings, reduced penetration rates, pipe sticking, loss of wellbore stability, and loss of circulation. These problems are generally encountered with conventional drilling mud, such as the bentonite–barite mud system. Formation damage is the most common problem encountered in bentonite mud systems with high solid content. In this work, we aimed to formulate two low-solid nondispersed (LSND) muds: carboxymethyl cellulose (CMC)–LSND mud and partially hydrolyzed polyacrylamide (PHPA)–LSND mud. A comparative analysis was performed to evaluate their property enhancements. LSND muds aid in maintaining hole stability and proper cutting removal. The results of this work show that the addition of both CMC and PHPA helps to improve drilling fluid properties; however, the PHPA–LSND mud was found to be superior. Shale swelling is a major concern in the petroleum industry, as it causes various other problems, such as pipe sticking, low penetration rates, and bit wear. The effect of these two LSND polymer muds in inhibiting shale swelling was analyzed using shale collected from the Champhai district of Mizoram, India.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"26 1","pages":"23-32"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72524143","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 : 2020-08-24DOI: 10.18799/24056537/2020/3/273
M. Kartashova, A. Artamonov, E. Plotnikov
Relevance: Hypomagnetic conditions have undesirable effects concerning various fields of science and technology. In biology, they cause adverse circumstances, which affect the functioning of living organisms. However, humans experience hypomagnetic fields (HMF) during space exploration, through some branches of production, military objects, and community transport. On the other hand, various high-precision technologies must have or operate under a hypomagnetic field. Aims: We aimed to provide a critical analysis of several ways of preparing hypomagnetic field, differences between hypomagnetic chambers and Helmholtz coils, and review of thematic patents and articles available in the Russian Federation. Methods: We structured and analyzed modern achievements in HMF. Experimental studies on living organisms were evaluated because they show different technical conditions connected to the theme of the hypomagnetic field. Results: Based on this analysis, a new resource-effective technology, which reveals several concerns on the hypomagnetic field, was offered. This technology is essential to be used during preparations for space missions, which require products with special necessities in terms of effectiveness and reliability. Conclusion: We summarized and correlated the results of experiments with possible magnetic conditions, which can occur during space missions and in some military and civil applications. Protection strategies from hypomagnetic conditions were considered. Novel experiments regarding realistic conditions were suggested.
{"title":"RESOURCE-EFFECTIVE SOLUTIONS TO ADDRESS HYPOMAGNETIC INFLUENCE ON HUMAN BODY","authors":"M. Kartashova, A. Artamonov, E. Plotnikov","doi":"10.18799/24056537/2020/3/273","DOIUrl":"https://doi.org/10.18799/24056537/2020/3/273","url":null,"abstract":"Relevance: Hypomagnetic conditions have undesirable effects concerning various fields of science and technology. In biology, they cause adverse circumstances, which affect the functioning of living organisms. However, humans experience hypomagnetic fields (HMF) during space exploration, through some branches of production, military objects, and community transport. On the other hand, various high-precision technologies must have or operate under a hypomagnetic field. Aims: We aimed to provide a critical analysis of several ways of preparing hypomagnetic field, differences between hypomagnetic chambers and Helmholtz coils, and review of thematic patents and articles available in the Russian Federation. Methods: We structured and analyzed modern achievements in HMF. Experimental studies on living organisms were evaluated because they show different technical conditions connected to the theme of the hypomagnetic field. Results: Based on this analysis, a new resource-effective technology, which reveals several concerns on the hypomagnetic field, was offered. This technology is essential to be used during preparations for space missions, which require products with special necessities in terms of effectiveness and reliability. Conclusion: We summarized and correlated the results of experiments with possible magnetic conditions, which can occur during space missions and in some military and civil applications. Protection strategies from hypomagnetic conditions were considered. Novel experiments regarding realistic conditions were suggested.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"8 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2020-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84761648","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 : 2020-08-13DOI: 10.18799/24056537/2020/2/261
M. A. Aginian, S. Arutunian, M. Chung, G. Harutyunyan, A. Margaryan, K. Moon, M. Tumanyan
A model of one-dimensional (1D) cold plasma with an external train of rigidly structured bunches with diverse charges has been introduced. In this model, a solution is presented that cancels the wakefield after the train is found. The density of such bunches can be much greater than the density of the plasma, and a high amplitude electrical field arising inside the train can be used for charged-particle acceleration. In addition, analytical and numerical simulations have been performed.
{"title":"NON-EXCITING WAKEFIELD STRUCTURED BUNCHES IN A ONE-DIMENSIONAL PLASMA MODEL","authors":"M. A. Aginian, S. Arutunian, M. Chung, G. Harutyunyan, A. Margaryan, K. Moon, M. Tumanyan","doi":"10.18799/24056537/2020/2/261","DOIUrl":"https://doi.org/10.18799/24056537/2020/2/261","url":null,"abstract":"A model of one-dimensional (1D) cold plasma with an external train of rigidly structured bunches with diverse charges has been introduced. In this model, a solution is presented that cancels the wakefield after the train is found. The density of such bunches can be much greater than the density of the plasma, and a high amplitude electrical field arising inside the train can be used for charged-particle acceleration. In addition, analytical and numerical simulations have been performed.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"160 1","pages":"15-23"},"PeriodicalIF":0.0,"publicationDate":"2020-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75784488","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 : 2020-08-04DOI: 10.18799/24056537/2020/1/235
P. Karthiga, T. Shankar, K. Karthick, K. Swarnalatha
Silver nanoparticles (AgNPs) are synthesized from the root extract of the Abutilon indicum plant. Nitrate reductase enzyme and/or other extra cellular proteins released from the extract reduce the silver nitrate to silver ions. These proteins or enzymes serve as a template for the silver nucleation sites in the development of silver nanoparticles, and also act as capping agents, preventing silver ion agglomeration. XRD analysis predicts the phase of the nanoparticles. Transmission Electron Microscope (TEM) and Scanning Electron Microscope analyses have revealed that the synthesized AgNPs are spherical in shape, with an average size of 17 nm. From the data, it is noted that the protein molecules and fatty acids present in the root extract of Abutilon indicum, play a vital role in reducing silver salts and as capping AgNPs at various concentrations. Bactericidal activity acting against the clinical pathogens was performed, and it was observed that NP inhibition is highly dependent on their size and surface. Cytotoxic studies were carried out with these synthesized silver nanoparticles using MTT assay on MCF-7 cells.
{"title":"PHYTOMEDIATED SYNTHESIS OF SILVER NANOPARTICLES AGAINST MICROBIAL PATHOGENS AND CYTOTOXICITY ON HUMAN BREAST CANCER CELLS (MCF-7)","authors":"P. Karthiga, T. Shankar, K. Karthick, K. Swarnalatha","doi":"10.18799/24056537/2020/1/235","DOIUrl":"https://doi.org/10.18799/24056537/2020/1/235","url":null,"abstract":"Silver nanoparticles (AgNPs) are synthesized from the root extract of the Abutilon indicum plant. Nitrate reductase enzyme and/or other extra cellular proteins released from the extract reduce the silver nitrate to silver ions. These proteins or enzymes serve as a template for the silver nucleation sites in the development of silver nanoparticles, and also act as capping agents, preventing silver ion agglomeration. XRD analysis predicts the phase of the nanoparticles. Transmission Electron Microscope (TEM) and Scanning Electron Microscope analyses have revealed that the synthesized AgNPs are spherical in shape, with an average size of 17 nm. From the data, it is noted that the protein molecules and fatty acids present in the root extract of Abutilon indicum, play a vital role in reducing silver salts and as capping AgNPs at various concentrations. Bactericidal activity acting against the clinical pathogens was performed, and it was observed that NP inhibition is highly dependent on their size and surface. Cytotoxic studies were carried out with these synthesized silver nanoparticles using MTT assay on MCF-7 cells.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"1 1","pages":"16-24"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88702987","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 : 2020-07-12DOI: 10.18799/24056537/2020/2/250
S. Boldyryev
Due to the rapid growth in the world population, there has been an increase in energy consumption globally. The problem of efficient energy use becomes more relevant and stimulates research and development of new energy and resource-saving technologies. This task is becoming more complicated when the other factors are accounted for, resulting in multiple-factor trade-offs, such as the water-energy-food nexus. This paper highlights the main points for the development of Process Integration in the Commonwealth of Independent States (CIS) countries. It shows the main achievements in the field to date and demonstrates the scientific schools that are working on these problems. A comprehensive review of modern approaches and methods, which are now being developed or have been recently developed, was done. It shows a research gap in Process Integration in CIS and other leading countries. It demonstrates the significant research potential as well as practical applications. The main challenges in process systems engineering and for the sustainable development of industrial energy systems are also discussed. Industry digital transformation, energy transition, circular economy, and stronger energy and water integration are pointed out as priorities in analysis, design, and retrofit of society in the future. A state-of-the-art review in the area of integration of continuous and batch processes, mass integration technologies, and process intensification is presented to show the variety of existing approaches. The necessity of Process Integration development in the CIS is shown to be a necessary condition for building a more sustainable society and a resource-efficient economy.
{"title":"ACHIEVEMENTS AND PERSPECTIVES OF PROCESS INTEGRATION IN CIS COUNTRIES","authors":"S. Boldyryev","doi":"10.18799/24056537/2020/2/250","DOIUrl":"https://doi.org/10.18799/24056537/2020/2/250","url":null,"abstract":"Due to the rapid growth in the world population, there has been an increase in energy consumption globally. The problem of efficient energy use becomes more relevant and stimulates research and development of new energy and resource-saving technologies. This task is becoming more complicated when the other factors are accounted for, resulting in multiple-factor trade-offs, such as the water-energy-food nexus. This paper highlights the main points for the development of Process Integration in the Commonwealth of Independent States (CIS) countries. It shows the main achievements in the field to date and demonstrates the scientific schools that are working on these problems. A comprehensive review of modern approaches and methods, which are now being developed or have been recently developed, was done. It shows a research gap in Process Integration in CIS and other leading countries. It demonstrates the significant research potential as well as practical applications. The main challenges in process systems engineering and for the sustainable development of industrial energy systems are also discussed. Industry digital transformation, energy transition, circular economy, and stronger energy and water integration are pointed out as priorities in analysis, design, and retrofit of society in the future. A state-of-the-art review in the area of integration of continuous and batch processes, mass integration technologies, and process intensification is presented to show the variety of existing approaches. The necessity of Process Integration development in the CIS is shown to be a necessary condition for building a more sustainable society and a resource-efficient economy.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"14 1","pages":"1-14"},"PeriodicalIF":0.0,"publicationDate":"2020-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81851063","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 : 2020-07-12DOI: 10.18799/24056537/2020/1/249
V. Olkhovskaya, I. Struchkov, K. Evich
In this work, we aimed to predict possible field production scenarios in case of asphaltene deposition based on field data as well as recommend remediation and stimulation measures to mitigate the risks of asphaltene deposition in the reservoir. We considered the influence of asphaltene formation in the near-wellbore of producers on the production data without reservoir pressure maintenance system in one of the oil fields. The asphaltene envelope in the reservoir oil was obtained, and the operating conditions of the field were evaluated under the possibility of asphaltene deposition. According to the results of dynamic modeling, the pressure map was plotted and the low-pressure areas in the near-wellbore were shown, which contributes to the aggravation of the problem associated with the asphaltene envelope. Based on the geometrical features of the low-pressure area, the dependence of the permeability reduction in the near-wellbore of the production well on the operating time was obtained using the asphaltene deposition model proposed by Wang and Civan. Based on the Buckley-Leverett theory, the field production profiles were calculated with and without asphaltene deposition. A decrease in the oil rate and consequently, the decrease in cumulative oil production in the field is expected due to the damage formation by solids. Maintenance of the production level will be facilitated by treating the near-wellbore with aromatic solvents and maintaining the reservoir pressure above the asphaltene onset pressure.
{"title":"ESTIMATION OF FIELD PRODUCTION PROFILES IN CASE OF ASPHALTENE DEPOSITION","authors":"V. Olkhovskaya, I. Struchkov, K. Evich","doi":"10.18799/24056537/2020/1/249","DOIUrl":"https://doi.org/10.18799/24056537/2020/1/249","url":null,"abstract":"In this work, we aimed to predict possible field production scenarios in case of asphaltene deposition based on field data as well as recommend remediation and stimulation measures to mitigate the risks of asphaltene deposition in the reservoir. We considered the influence of asphaltene formation in the near-wellbore of producers on the production data without reservoir pressure maintenance system in one of the oil fields. The asphaltene envelope in the reservoir oil was obtained, and the operating conditions of the field were evaluated under the possibility of asphaltene deposition. According to the results of dynamic modeling, the pressure map was plotted and the low-pressure areas in the near-wellbore were shown, which contributes to the aggravation of the problem associated with the asphaltene envelope. Based on the geometrical features of the low-pressure area, the dependence of the permeability reduction in the near-wellbore of the production well on the operating time was obtained using the asphaltene deposition model proposed by Wang and Civan. Based on the Buckley-Leverett theory, the field production profiles were calculated with and without asphaltene deposition. A decrease in the oil rate and consequently, the decrease in cumulative oil production in the field is expected due to the damage formation by solids. Maintenance of the production level will be facilitated by treating the near-wellbore with aromatic solvents and maintaining the reservoir pressure above the asphaltene onset pressure.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85139609","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 : 2020-05-09DOI: 10.18799/24056537/2020/1/218
U. Mehta, Ravneel Prasad, Kajal Kothari
Supercapacitors (SCs) are used extensively in high-power potential energy applications like renewable energy systems, electric vehicles, power electronics, and many other industrial applications. This is due to SCs containing high-power density and the ability to respond spontaneously with fast charging and discharging demands. Advancements in material and fabrication techniques have induced a scope for research to improve the application of SCs. Many researchers have studied various SC properties and their effects on energy storage and management performance. In this paper, various fractional calculus-based SC models are summarized, with emphasis on analytical studies from derived classical SC models. Study prevails such parameterized resistor–capacitor networks have simplified the representation of electrical behavior of SCs to deal with the complicated internal structure. Fractional calculus has been used to develop SC models with the aim of understanding their complicated structure. Finally, the properties of different SC models utilized by various researchers to understand the behavior of SCs are listed using an equivalent circuit.
{"title":"VARIOUS ANALYTICAL MODELS FOR SUPERCAPACITORS: A MATHEMATICAL STUDY","authors":"U. Mehta, Ravneel Prasad, Kajal Kothari","doi":"10.18799/24056537/2020/1/218","DOIUrl":"https://doi.org/10.18799/24056537/2020/1/218","url":null,"abstract":"Supercapacitors (SCs) are used extensively in high-power potential energy applications like renewable energy systems, electric vehicles, power electronics, and many other industrial applications. This is due to SCs containing high-power density and the ability to respond spontaneously with fast charging and discharging demands. Advancements in material and fabrication techniques have induced a scope for research to improve the application of SCs. Many researchers have studied various SC properties and their effects on energy storage and management performance. In this paper, various fractional calculus-based SC models are summarized, with emphasis on analytical studies from derived classical SC models. Study prevails such parameterized resistor–capacitor networks have simplified the representation of electrical behavior of SCs to deal with the complicated internal structure. Fractional calculus has been used to develop SC models with the aim of understanding their complicated structure. Finally, the properties of different SC models utilized by various researchers to understand the behavior of SCs are listed using an equivalent circuit.","PeriodicalId":21019,"journal":{"name":"Resource-Efficient Technologies","volume":"116 1","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2020-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90537552","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}
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