International Journal of Energy Production and Management最新文献

{"title":"Sustainable energy for smart city","authors":"L. Gitelman, M. Kozhevnikov, L. Ádám","doi":"10.2495/eq-v4-n4-243-253","DOIUrl":"https://doi.org/10.2495/eq-v4-n4-243-253","url":null,"abstract":"The article presents the results of a study of structural changes in the energy sector serving digital technologies for the urban environment of the future that is being created now. The study considers country-specific factors and problems of ensuring the sustainability of heat and power supply. The authors look at the priority areas of a new phase of electrification aimed at the development of advanced energy-saving smart technologies, electric transport, electric cars and appropriate energy and utility infrastructure. The case is studied of developing engineering, technical, organizational and economic solutions when overhauling the heat supply system in a ‘smart’ residential district of Yekaterinburg, one of Russia’s megalopolises, that is being designed and constructed on the basis of the principles of intelligent engineering infrastructure.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48347846","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":"Thermodynamic modeling of cogeneration mini CHP using air conversion of diesel fuel and electrochemical generator","authors":"S. Shcheklein, A. Dubinin","doi":"10.2495/eq-v4-n4-273-286","DOIUrl":"https://doi.org/10.2495/eq-v4-n4-273-286","url":null,"abstract":"The article was prepared with the financial support of the Government of the Russian Federation (Contract No 02.A03.21.0006).","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48871296","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":"Energetic retrofit of historical downtown buildings: Cost effectiveness and financing options","authors":"V. Sugár, M. Kita, Zsófia Balló","doi":"10.2495/eq-v4-n4-320-331","DOIUrl":"https://doi.org/10.2495/eq-v4-n4-320-331","url":null,"abstract":"Today several energy saving measures are being taken worldwide. As a component of these, the energy efficiency of the buildings should be increased. Given the high ratio of the existing, ineffective building stock, large-scale retrofit actions are going to be needed to reduce their energy usage. The historical districts and the heritage buildings stand as special part of the above question, as several limitations increase the complexity of their retrofit. In present paper, the authors are introducing retrofit possibilities for the traditional apartment house type, widespread in the past Austro-Hungarian downtowns. A detailed methodology for complex renovation is divided to three main aspects: energy efficiency, monument protection guidelines and feasibility. By combining the above aspects, optimized renovation scenarios and their cost efficient financing implementation are surveyed. Results show, that the energy saving and heritage respecting solutions are not economically feasible enough to be appealing for private investors. The retrofit, however, is much needed to increase the life quality of residents, save energy, and protect the unique architectural character, now constantly endangered by demolitions. The authors suggest solutions for the above problem by creating possible financing scenarios, which can be used as a benchmark for preliminary decision making in case of a planned retrofit.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45945319","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":"Conversion of lignocellulosic biomass in biobutanol by a NOVEL thermal process","authors":"M. Martínez, Xavier Duret, D. Minh, A. Nzihou, J. Lavoie","doi":"10.2495/eq-v4-n4-298-310","DOIUrl":"https://doi.org/10.2495/eq-v4-n4-298-310","url":null,"abstract":"this work aims at demonstrating the possibility of producing 2-butanol from lignocellulosic biomass through a new thermochemical approach. the production of biobutanol was carried out using dif- ferent lignocellulosic feedstock through a 3-step process: first the whole lignocellulosic biomass is hydrolyzed under acid catalyst to produce levulinates, then the levulinates go through decarboxylation to produce 2-butanone which is, in a final step, reduced to produce of 2-butanol. the experimental conditions for the first two steps of the process were optimized using the response surface methodology (rsm). the latter could represent an opportunity for the production of economical second-generation butanol without having to go through the classical pathway requiring the production of sugar prior to microbial conversion.","PeriodicalId":52236,"journal":{"name":"International Journal of Energy Production and Management","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41662778","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":"First wholly-analytical gas volume fraction model for virtual multiphase flow metering petroleum industry applications","authors":"A. Nagoo","doi":"10.2495/eq-v4-n3-244-254","DOIUrl":"https://doi.org/10.2495/eq-v4-n3-244-254","url":null,"abstract":"In this seminal contribution, the world’s first wholly-analytical gas volume fraction multiphase flow model is formulated and demonstrated in virtual flow meter and production allocation field applications for its differentiated ability to achieve improved reliability of phase flow rate calculations given pressure and temperature measurements at two different locations along multiphase production systems. The presented simple gas volume fraction equation is explicit in form and is validated against both lab data and oilfield flowline data. A crucial requirement for differential pressure flow meters for multiphase production systems, particularly wet gas systems in annular and annular-mist flows, is the calculation of the averaged gas volume fraction. Additional calculations include multidirectional entrainment calculations, which strongly affect the simultaneous entrainment of liquids in the gas phase and the gas in the liquid phases. Historically, prior published gas volume fraction two-phase flow models had closure relations and artificial adjustment (fitting) factors linked to controlled lab-scale conditions involving immiscible fluids that bear no resemblance to the complex petroleum mixtures undergoing phase change in uncontrolled long wellbore and flowline environments. Thus, ambiguous extrapolations were necessary leading to increased uncertainties. Using an asymptotic approximation analysis approach, an analytical gas volume fraction equation is derived that overcomes this empirical-based restriction. In terms of comprehensive validation, the presented analytical gas volume fraction equation is demonstrated first for its ability to reliably reproduce over 2600 two-phase annular and annular-mist flow experimental datasets inclusive of circular and non-circular conduits. Secondly, readily available published experimental data of both constant-diameter as well as variable-diameter sub-critical to critical choke two-phase flows are used for model validation in scenarios involving different flow obstructions. Lastly, an offshore subsea flowline dataset is used to demonstrate the improved reliability of the new equation at field-scale operational conditions.","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":"43210561","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":"Management of challenges during the construction of offshore facilities","authors":"O. Gudmestad","doi":"10.2495/eq-v4-n3-187-197","DOIUrl":"https://doi.org/10.2495/eq-v4-n3-187-197","url":null,"abstract":"The construction of offshore facilities for development of oil and gas deposits is preceded by careful Conceptual Studies, front-End Engineering Design Studies (fEED studies) and a Detailed Engineering phase including accurate construction planning. Still, incidents during the Construction Phase could lead to needs for implementation of physical strengthening of construction details or changes to the construction process. These incidents could emerge from information coming from the construction of other facilities, detection of design errors or aspects which were overseen during the engineering phase. Serious consequences, like loss of assets or fatalities, could occur in case the unexpected information was not assessed and changes were not implemented. In this paper, we report on how the design and construction processes were adjusted during the construction phase of the largest of the North Sea platforms, the Troll offshore gas production facilities, as new information became available while the platform was in the construction phase. The assessment of all incoming information and implementation of mitigating measures led to the successful construction, installation and start-up of gas production from the platform. Of particular importance for the success was the open attitude by the operator of the construction project to allow for voicing of concerns from companies hired to do verification, external reviewers and from project personnel. The lessons learned during the construction of these facilities could be very useful for those involved in the design and construction of large projects, in particular in offshore oil and gas projects where the forces due to waves and currents and the strains due to bending and pressures are not always well known initially. The paper is concluded by a recommendation to listen to those presenting warnings to project management during project execution (including the detailed engineering and construction phases).","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":"41295533","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":"A paradigm of reforms with alternate energy sources","authors":"E. Al-Haddad, M. Rizwan","doi":"10.2495/eq-v4-n3-209-216","DOIUrl":"https://doi.org/10.2495/eq-v4-n3-209-216","url":null,"abstract":"This paper focusses on rapidly growing gas demand in the state, its key drivers and solutions. Emphasis is provided on Kuwait’s outlook and ventures into liquefied natural gas (lNg), controls and measures developed for handling constraints in logistical infrastructure. requirement for tight interaction between the suppliers and consumers was pivotal to segregate different qualities of natural gas to certain consumers. A robust gas Network system was conceived in the state and it was concluded that under normal operating conditions, it will be possible to supply gas to all essential consumers by combining the available gas from upstream units, refineries and lNg import facility. In this work, a full-blown gas network was simulated to determine transportation capacities, potential restrictions of suppliers and flexibility to use different types of gases available in the system. The study outlined decisive propositions such as the natural gas produced in the state will not be adequate to fulfil the future energy demand, therefore, additional sources such as lNg were more deeply analysed. moreover, the current energy strategy is primarily based on fossil fuels and hence more efforts were required in implementing renewable energy solutions. In line with this approach, implementation of state sponsored renewable energy projects is underway and by 2030 the share of renewable energy is planned to stretch up to 15% of overall power demand.","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":"46911598","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":"Influence of oil prices in dynamic positioning training","authors":"Zaloa Sanchez-Varela, D. Boullosa-Falces, Juan Luis Larrabe-Barrena, Miguel a. Gómez-Solaeche","doi":"10.2495/eq-v4-n3-255-265","DOIUrl":"https://doi.org/10.2495/eq-v4-n3-255-265","url":null,"abstract":"The main purpose of this research is to present the influence of the oil price drop in the offshore training industry and the actions taken to minimise this effect. In particular, data corresponding to the Offshore Dynamic Positioning (DP) training and certification scheme by the Nautical Institute were used for the research. Since the oil price began to drop by the end of 2014, the oil and gas industry had to make some readjustments to keep the profits and continue in the business. The offshore DP training was affected by this crisis in two ways: the number of candidates starting the certification scheme dropped significantly; and on the other hand, candidates who had already begun the scheme were unable to complete the required number of days to be able to access the DP Simulator course, or for obtaining the DP Operator certificate. During this period, the training and certification scheme has undergone some changes to adapt to the new situation and to try to resolve the problems mentioned above. The analysis of the data shows that the effect of the oil price drop was not initially affecting the training but only began to show the consequences after some months.","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":"44676396","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 efficiency measures for an electrical material industry","authors":"Luís F. Amado, Helena J. Marto, P. F. Tavares","doi":"10.2495/eq-v4-n3-217-229","DOIUrl":"https://doi.org/10.2495/eq-v4-n3-217-229","url":null,"abstract":"The main goal of the present paper is to present the study of energy efficiency measures for an electrical material industry. The high-energy consumption of this kind of industry lead companies to search for solutions that allow increasing the energy efficiency in their installations and in the processes, promoting the reduction of the energy consumption and costs. In this context, the objectives of this study emerged, which resulted from the main needs identified by the company. Therefore, the work was divided into four parts. The first one, was the study of replacing the existing lighting (mainly mercury vapor lamps by led); another study conducted was the replacement of the electric motors in injection machines by new and more efficient ones; the third one was the installation of a photovoltaic solar system (for self-consumption) and, finally, the project of a new power converter station for the company. The energy efficiency studies carried out are based on: a careful analysis of the data provided by the company; all the measurements done; the consumption profiles that have been drawn; an extensive market research (with the purpose of finding the most efficient solutions for each case); and in already existing and proven calculation methodologies, leading, in this way, to a greater reliability of the obtained results. These studies showed to which extent the implementation of the various measures presented are economically viable, their impact on the reduction of energy consumption and the annual savings achieved.","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":"41600578","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":"Unconventional small-scale biogas production with reduced local impact","authors":"E. Rada, Luca Costa, Cecilia Pradella, L. Adami, M. Schiavon, E. Magaril, V. Torretta","doi":"10.2495/eq-v4-n3-198-208","DOIUrl":"https://doi.org/10.2495/eq-v4-n3-198-208","url":null,"abstract":"One of the problems of food waste management is the acceptability of the treatment plants at local level because of the risk of odours. Anaerobic digestion as first step before composting has contrib- uted to solve this problem, but, in the sector, it remains an opposition to large plants. That affects also food waste anaerobic digestion: people’s perception is that the stream coming at the gate of the plant is not theirs. The present paper shows an alternative to the conventional approach. The aim is to reduce the scale of the intervention giving a solution also to small municipalities or to an aggregation of small municipalities. The basic idea is suitable for adaptations depending on the local availability of manure and other plants specialised on wastewater. The integrability of these plants allows reduc- ing the costs for treating secondary streams to be managed, as discussed in the article. The extreme technological scenario is based on an anaerobic digester with unconventional pre-treatment of food waste and energy recovery, on a hydro-thermal carbonisation reactor for manure, on an ammonia separator for product recovery (by stripping), on a CO 2 separator (from off-gases), on a hydro-biochar flusher for opening to land application and on mechanised small-scale composters for small com-munities. The principles of the circular economy are adopted, but the economic balance is affected by the transport costs of the products. The suitability of this approach to medium income countries is discussed too.","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":"47108820","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}