International Journal of Energy Production and Management最新文献

{"title":"Asset management in grid companies using integrated diagnostic devices","authors":"L. Gitelman, M. Kozhevnikov, D. D. Kaplin","doi":"10.2495/eq-v4-n3-230-243","DOIUrl":"https://doi.org/10.2495/eq-v4-n3-230-243","url":null,"abstract":"The digitization of power grids envisages a transition to new models of fault diagnosis, repair and maintenance of electric power grid equipment. The most promising tools for implementing advanced production asset management strategies are integrated technologies that are based on robotic diagnostic platforms, various hardware–software instruments and smart data analysis systems. The article analyzes other countries’ experience of developing robotic methods of fault diagnosis and maintenance of overhead power transmission lines, which present a major challenge in terms of monitoring, failure prediction and localized repairs. The Cablewalker robotic system was used as an example for identifying the advantages of integrated diagnostic hardware systems as opposed to traditional meth-ods of power grid equipment maintenance and overhaul. Recommendations are given for adopting the technology in grid companies. During trials of the technology on a 2.34-km section of a power transmission line 112 defects were detected versus three that were identified by means of ‘manual’ inspection. A digital twin of the transmission line was created to manage its technical condition with regard to various risks.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45177817","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}

{"title":"Comparison of catalysts in the point of view of pellet stove flue gas purification","authors":"Jiří Ryšavý, J. Horák, F. Hopan, L. Kuboňová, K. Krpec, P. Kubesa","doi":"10.2495/EQ-V4-N2-124-133","DOIUrl":"https://doi.org/10.2495/EQ-V4-N2-124-133","url":null,"abstract":"Monolithic catalysts are used as a method for the flue gases purifying by oxidation of gas products from incomplete combustion. This study is focused on three different types of monolithic catalysts and quantification of their degree of influence on mass concentration of carbon monoxide (CO) and organic gaseous compounds (OgCs) in real small-scale wood pellet stove. Catalysts were placed right behind the stove at the flue gas outlet. The comparison consisted of quantification of their influence on the selected pollutants during the few-hours steady operation of the small-scale pellet stove. Reference values of the selected pollutants were defined during the combustion test without a catalyst installed. in this article, three catalysts based on different active compounds: wO3–v2O5, Pd and Pt were tested. The palladium-based catalyst has proven the best degree of conversion of CO (almost 78%). The platinum-based catalyst has proven the best degree of conversion of OgC (almost 64%). Due to a big degree of clogging by solid particles of all catalysts during the tests, it is impossible to operate the chosen stove with tested types of catalysts in normal operation at home conditions. without any type of periodical cleaning (every few hours), there is a serious danger of leakage of the flue gas out of the stove. Further investigations should evaluate the degree of clogging in a long-term operation and should propose a method to avoid any danger of the flue gas leaking caused by the catalysts.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46894884","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}

{"title":"Flexibility of drinking water systems: An opportunity to reduce CO2 emissions","authors":"Chouaib Mkireb, A. Dembélé, T. Denoeux, A. Jouglet","doi":"10.2495/EQ-V4-N2-134-144","DOIUrl":"https://doi.org/10.2495/EQ-V4-N2-134-144","url":null,"abstract":"Drinking water systems (DWSs) are huge electricity consumers, mainly due to pumping operations. In these systems, electricity costs represent approximately one-third of the total operating costs. because of the environmental impact of electricity generation worldwide (coal, gas, and diesel), water systems also implicitly contribute to global warming. however, these systems have flexibility thanks to water storage structures (tank and reservoirs) and variable speed pumps. The flexibility of DWSs is generally used to optimize energy costs. Furthermore, this flexibility can also be used to provide an environmental and operational service for the power system, by reducing peak power load and the volume of energy transactions on wholesale markets. Indeed, peak power reduction can be sold by water utilities on electricity markets, preventing the production of an equivalent amount of additional energy. In France, peak hours require a massive use of fossil energy sources, which makes electricity production at these periods extremely expensive, both economically and ecologically. using a mathematical optimization model, we optimize the management of these peak periods by shifting load at off-peak hours and selling the reduced energy on the French wholesale energy market. In this paper, we explore the ecological benefits that water systems could provide through this optimization process. We evaluate the cO2 emissions that can be effectively reduced on three real DWSs in France. For these three systems, avoided cO2 emissions were estimated at 2,190 kg/day for the largest system and 194 kg/day for the smallest one, which is equivalent to the emission of 145–1620 cars during 10 km of driving. We also evaluate, based on some hypotheses, the potential for cO2 reduction from water systems at the French scale.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43105396","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}

{"title":"CPFD model for prediction of flow behavior in an agglomerated fluidized bed gasifier","authors":"N. C. Furuvik, Rajan Jaiswal, R. Thapa, Britt M. E. Moldestad","doi":"10.2495/EQ-V4-N2-105-114","DOIUrl":"https://doi.org/10.2495/EQ-V4-N2-105-114","url":null,"abstract":"All of the papers published are freely available, without charge, for users to read, download, copy, distribute, print, search, link to the full text, or use for any other lawful purpose, without asking prior permission from the publisher or the author as long as the author/copyright holder is attributed. This is in accordance with the BOAI definition of open access.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47653223","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}

{"title":"Experimental and computational studies on biomass gasification in fluidized beds","authors":"T. Basmoen, Chidapha Deeraksa, Chimunche Nwosu, Ebrahim Qaredaghi, Rajan Jaiswal, N. C. Furuvik, Britt M. E. Moldestad","doi":"10.2495/EQ-V4-N2-168-177","DOIUrl":"https://doi.org/10.2495/EQ-V4-N2-168-177","url":null,"abstract":"All of the papers published are freely available, without charge, for users to read, download, copy, distribute, print, search, link to the full text, or use for any other lawful purpose, without asking prior permission from the publisher or the author as long as the author/copyright holder is attributed. This is in accordance with the BOAI definition of open access.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46108338","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}

{"title":"Potentials of the waste-to-energy sector for an unconventional district heating system","authors":"M. Ragazzi, K. Ferrari, L. Adami, M. Schiavon, E. Rada","doi":"10.2495/EQ-V4-N2-115-123","DOIUrl":"https://doi.org/10.2495/EQ-V4-N2-115-123","url":null,"abstract":"In spite of being a process that exploits a renewable source of energy, the combustion of wood-based biomass contributes to deteriorate outdoor and indoor air quality. Critical situations for human exposure may occur in mountainous areas, where wood-based biomass is usually abundant and the complex morphology may favour the stagnation of air pollutants in valleys. Replacing wood/pellet stoves with centralised systems would reduce the impact, but the construction of district heating systems may not be convenient in areas with low density of houses. A possible solution could rely on direct electrical heating (DEH) systems, preferably fed by thermochemical processes that help achieve environmental goals for the local community, like the reduction of waste landfilling and the valorisation of the energy content of waste. This paper aims at presenting a comparison between the impacts expected by household wood/pellet stoves and by a modern waste-to-energy (WtE) plant, in terms of emissions of air pollutants into the atmosphere, when replacing wood stoves with a DEH system fed by the electric energy generated by the WtE plant. The comparison shows that the replacement of household stoves with an equivalent DEH system would be beneficial in terms of impacts on the local air quality. Such an approach could be considered to reduce the health impacts from biomass burning in critical areas like the Alpine region.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44172473","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}

{"title":"Risk assessment of renewable energies: Global exposure","authors":"G. Chebotareva","doi":"10.2495/EQ-V4-N2-145-157","DOIUrl":"https://doi.org/10.2495/EQ-V4-N2-145-157","url":null,"abstract":"The current stage of renewable energy (RE) development poses new challenges to this sector. The existing mechanisms of state stimulation of Renewable energy system are gradually exhausting its capacity. This requires the development of new methods to support the industry, or giving them up altogether. This article presents the results of the theoretical analysis of the systemic features of RE risk assessment at each stage of a project’s life cycle. A sectoral approach to the risk assessment of energy projects is proposed. It is based on the well-known logit-model that studies a set of external and internal indicators. Based on this model, a study of the dynamics of the risk indicators of RE projects on three basic stages was conducted. Calculations were made for RE projects implemented in different countries of the world, including China, USA, Canada, Japan, India and a number of European countries. Initially, all projects were divided into three main groups depending on the types of state support: concessional lending, subsidies or the lack thereof. Based on the results of the calculations, the overall and average dynamics of risk by group and by project stage allowed for assessing the global effectiveness of state measures to support the sector, as well as for drawing appropriate conclusions in the context of individual countries. The results of the study are of practical importance and will be used in developing a new approach to risk assessment, taking into account the specifics of the RE market, as well as in enhancing the concept of competition in the global energy market.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45683696","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}

{"title":"Energy conservation in university buildings by energy pattern analysis using clustering technique","authors":"Bishnu Nepal, M. Yamaha, Hiroya Sahashi","doi":"10.2495/EQ-V4-N2-158-167","DOIUrl":"https://doi.org/10.2495/EQ-V4-N2-158-167","url":null,"abstract":"The energy demand of the building sector is increasing rapidly, driven by the improved access to energy in developing countries, greater ownership and use of energy-consuming devices, and rapid growth in building floor area. Energy demands in the building sector account for more than 30% of the total energy consumption and more than 55% of the global electricity demand. Efforts to develop sustainable buildings are progressing but are still not keeping up with the growing building sector and the rising demand for energy. Analyzing the energy consumption pattern of the buildings and planning for energy conservation in existing buildings are essential. In this research we proposed a method to analzse the energy pattern of university buildings using K-means clustering method. Energy consumption in Science, non-science and office buildings of university is analyzed and their respective base energy, energy consumption due to human activities and air-conditioning energy consumption is calculated. The proposed method is successful in classifying the energy consumption and will prove to be helpful in the planning of energy conservation in buildings.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69039457","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}

{"title":"Thermal-hydraulic response of a reactor core following large break loss-of-coolant accident under flow blockage condition","authors":"Y. Bang, Joosuk Lee","doi":"10.2495/10.2495/EQ-V4-N1-86-95","DOIUrl":"https://doi.org/10.2495/10.2495/EQ-V4-N1-86-95","url":null,"abstract":"","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45325781","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}

{"title":"Atmospheric dispersion patterns of radionuclides originating from nuclear power plant accidents under various release types","authors":"E. Bi̇lgi̇ç, O. Gunduz","doi":"10.2495/EQ-V4-N1-75-85","DOIUrl":"https://doi.org/10.2495/EQ-V4-N1-75-85","url":null,"abstract":"Nuclear power has begun to lose its popularity after the major catastrophes of Chernobyl and Fukushima that caused a global environmental and public health problem. Radioactivity released from these accidents spread all around the world and negatively influenced large areas as a result of different meteorological conditions prevailing at the time of the accidents. Another particularly important parameter used in assessing the atmospheric dispersion of radioactivity is the characteristics of the source term that defines the release pattern of radionuclides from the accident site. Core inventory and shape and extent of the release define the source term to be used in simulating the dispersion pattern of radioactivity. Thus, mathematical representation of the source term is a crucial part of the dispersion modeling of radionuclides. Ideal types of releases (such as pulse, step, linear, sinusoidal) can occur in an accident or a combination of these types can constitute the real pattern of the release from the accident’s source. The mathematical character of the release is influential in the overall dispersion and deposition of radioactivity. Based on this premise, this study is conducted to assess the possible differences in the spatial distribution of dispersed and deposited radionuclides that can originate from a potential accident in Akkuyu nuclear power plant (NPP) in the southern Mediterranean coast of Turkey. Simulations are per- formed with FLEXPART model to predict the atmospheric dispersion and ground level depositions of radionuclides to be released from a hypothetical accident in Akkuyu under various release patterns and different meteorological conditions representing extreme conditions. Model simulations considered a 10-day release duration with distinct release patterns under extreme meteorological conditions for the site. A comparative assessment is then conducted to evaluate the extent and magnitude of Cs-137 dispersion and deposition, which is the most commonly used radionuclide in NPP accident simulations.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46312540","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}