1,721,001 research outputs found
Integrazione di sistemi a energia rinnovabile nel sistema elettrico locale: stato dell’arte e soluzioni innovative nell’ambito della Simbiosi Industriale e della Simbiosi Urbana-Industriale.
No full textLa riduzione delle emissioni climalteranti è considerata un obiettivo strategico, sia a livello europeo che globale. Una maggiore diffusione delle fonti energetiche rinnovabili (FER) è considerata essenziale per una transizione verso un sistema energetico più sostenibile. Questa transizione verso un’energia a basse emissioni di carbonio richiede lo sviluppo e l'uso di tecnologie innovative, in particolare nei settori di utilizzo finale (edifici, industria e trasporti), e nuovi approcci economici, di gestione e di mercato.
Lo studio presentato in questa tesi esplora le opportunità sostenibili offerte dall'approccio di simbiosi industriale e urbano-industriale basati sull'energia. La simbiosi industriale energetica (SIE) propone la condivisione di risorse, strutture e infrastrutture legate all'energia come un modello efficace per promuovere misure di risparmio energetico e l'adozione di fonti energetiche rinnovabili a livello industriale. Inoltre, è possibile perseguire una strategia energetica a basse emissioni di carbonio creando sinergie energetiche tra i distretti industriali e le aree urbane adiacenti. Stabilire la simbiosi energetica urbana-industriale (SUIE) consente di ottimizzare la produzione e il consumo di energia e di sfruttare il know-how locale e le risorse umane. Il nuovo sistema integrato necessita infatti di un cambio di prospettiva, considerando un'azione multi-stakeholder: aziende di servizi energetici, comunità locali, settore industriale, consumatori, policy maker, ricercatori devono impegnarsi attivamente nei processi di pianificazione partecipativa per guidare la trasformazione del sistema energetico e del processo di ricerca e innovazione, e rispondere adeguatamente alle esigenze del territorio.
Nella tesi viene presentata un'analisi approfondita dei molteplici driver e barriere tecnici, economici, organizzativi, normativi, ambientali e sociali dell'approccio di simbiosi energetica, con l'obiettivo di modellare le configurazioni ottimali delle sinergie energetiche tra le imprese che comprendano l’uso di FER. Viene inoltre sviluppata una metodologia per supportare energy manager, singole imprese, gruppi di imprese all'interno di parchi industriali e decisori per valutare le sinergie e i progetti energetici che coinvolgono FER, tenendo conto degli impatti economici, ambientali e sociali dei progetti.
Inoltre, viene sviluppato un framework orientato alla sostenibilità con l'obiettivo di modellare le sinergie energetiche urbano-industriali comprendenti le FER da un punto di vista multi-stakeholder per supportare il processo decisionale sulla sostenibilità economica, ambientale e sociale delle sinergie energetiche.
L’applicazione degli strumenti decisionali sviluppati a specifici casi studio consente di sottolineare come le strategie collettive (SIE o SUIE) consentano una migliore gestione della fornitura di energia da fonti rinnovabili.Reducing emissions responsible for the climate change is recognized as a strategic goal at European and global level. A higher deployment of renewable energy sources (RES) is considered as essential for a transition towards a more sustainable energy system. This low-carbon energy transition requires both the development and use of innovative technologies, particularly at end-use sectors (buildings, industry and transport), and new management approaches as well as new market design and business models.
This study explores the sustainability driven opportunities offered by the energy based Industrial and Urban-Industrial Symbiosis approach. The Industrial Energy Symbiosis (IES) considers the sharing of energy-related resources, facilities and infrastructures as an effective model to promote energy conservation measures and the renewable energy sources uptake at the industrial level. In addition, an improved low-carbon strategy can be achieved creating energy synergies between industrial districts and the adjacent urban areas. Establishing Urban-Industrial Energy Symbiosis (UIES) allows optimizing the energy production and consumption and exploiting the local knowhow and human resources. These new integrated system needs a change of perspective, considering a multi-stakeholder action: energy service companies, local communities, industry sector, consumers, policy makers, researchers must get actively involved in participatory planning processes to guide the transformation of the energy system and the research and innovation process, and respond adequately to the needs of the territory.
Thus, an in-depth analysis of the manifold technical, economic, organizational, regulatory, environmental and social drivers and barriers of the energy symbiosis approach are presented, with the aim of modelling the optimal energy synergies configurations among firms including RES. A methodology is developed to support energy managers, single firms, groups of firms within industrial parks, and decision-makers to evaluate energy synergies and projects involving RES, taking into account the economic, environmental and social impacts of the projects.
Lastly, a sustainability-driven framework is developed, with the aim of modeling Urban–Industrial Energy Symbiosis networks integrating RES from a multi-stakeholder point of view and supporting decision-making on the economic, environmental, and social sustainability of the energy synergies.
The application of the developed decision-making tools to specific case studies emphasizes how collective strategies (IES or UIES) allow better management of the energy supplied by renewable sources
Sustainable management of electric vehicle battery remanufacturing: A systematic literature review and future directions
Full text linkUnderstanding the Demand Driven Material Requirements Planning Scope of Application: a Critical Literature Review
Full text linkThe supply chains complexity generated by the dynamic market demand imposes the improvement of the classical
production control systems. A recently introduced method, the Demand Driven Material Requirements Planning
(DDMRP), is proposed as an upgrade of the Material Requirements Planning (MRP), widely used in industry, capable of
overcoming the nervousness of MRP environment and the bullwhip effect affecting supply chains under uncertainties.
The DDMRP approach, however, is still not well established since the conditions for its application are still little
investigated. Thus, this study aims at reviewing the existing scientific literature concerning DDMRP method in order to
critically analyse its main scope of application as well as its real practical performance. From the reviewed literature three
main research lines emerged: DDMRP basic principles, comparison with other methodologies, and case studies. The
analysis of both research oriented papers and case studies points out some critical issues that are limiting the diffusion of
the DDMRP method, including the additional costs necessary to adapt the in use control and planning software. The main
criticality of the method is recognized to be the high subjectivity affecting the positioning of the buffers, and the need for
classifying the suitable sectors of application
Cost-benefit evaluation of investment in natural gas distribution
Full text linkInvestment in the distribution of natural gas must be assessed by combining a technical analysis of the investment and an assessment of the social costs and benefits, to evaluate the impact of the project on social welfare in monetary terms. This paper describes how such an analysis can be conducted, by developing a methodology for the evaluation of investment in the distribution of natural gas. Once the net social benefit (NSB) of the investment has been evaluated, it is also important to assess the degree of reliability of such an estimate. This assessment can be conducted through two types of tests: sensitivity analysis and risk analysis. The critical variables are identified in sensitivity analysis as those that have a significant impact on the predicted outcome when they change. To address any uncertainties in the critical variables, a risk analysis quantifies the probability that the NSB is less than that estimated when using modal values for the critical variables. This type of analysis, combined with a technical evaluation, can be effectively used to assess the social consequences of an investment
Mechanical effects of chemical etchings on monocrystalline silicon for photovoltaic use
No full textThe mechanical e!ects of two etching treatments commonly applied on silicon wafers for the
PV industry, are considered. The failure characteristics of this material under concentrated load
are shown . In both cases, the maximum elongation and sustainable load of the etched wafers
were measured to be higher than those of the original sample. The employed experimental
procedure and results are presented here and a statistical data analysis substantiates the results
observed. An attempt of explanation for this e!ect is o!ered based on the removal of a shallow
highly defective layer induced by the etching of the material.
Balancing of Manual Reconfigurable Assembly Systems with Learning and Forgetting Effects.
Full text linkOpportunities of Digital Transformation in Post-Harvest Activities: A Single Case Study of an Engineering Solutions Provider
Full text linkThe purpose of this article is to identify opportunities that digital transformation in post-harvest activities offers to an engineering solution provider. The research method is a simple case study. The object is a company based in southern Brazil that provides engineering-integrated digital solutions to grain producers, including products and services. The specific objectives are to describe the company’s digital products and services, identify opportunities and players, and discuss how players can take advantage of opportunities owing to business process digitalization. The main results include separating products into three technological layers and identifying five types of opportunities (financing, commercialization, operation, logistics, traceability, and insurance), eight types of players, and the main opportunities for each player. The most significant opportunities are risk reduction in insurance contracts, improvement in grain quality, increments in food safety, and accurate information on grain movements. The main implication of the study is that grain producers and other players can explore opportunities, and solution providers can evolve toward complete digitalization by integrating service into the current offerings of post-harvest engineering solutions
Inter-firm exchanges, distributed renewable energy generation, and battery energy storage system integration via microgrids for energy symbiosis
Full text linkCircularity Performances of the Production of a Cement Mortar Reinforced with Recycled Synthetic Fibers
Full text linkForced by environmental implications and by legislation requirements, the cement sector is moving towards more circular economy practices, with the primary aim to enhance the sector sustainability. This commitment translates into product technology innovation, but also into innovative development perspectives for the industries involved in the supply chain. Moreover, dealing with recycled materials can modify the interaction among stakeholders from a conventional supply chain to an industrial symbiosis approach, where companies mutually exchange products and by-products into circular interactions. The purpose of this article is to investigate the circularity performances deriving from the production of a cement mortar reinforced with recycled synthetic fibers coming from artificial turf carpets. From the collection of artificial turf carpets at the end-of-life stage it is possible to recover several materials: plastic fibers used in the cement mortar, and in addition, silica sand, rubber, and bituminous membrane. The production of the innovative reinforced cement mortar leads to the connection between industries belonging to different sectors and consequently to uneven economic and environmental implications. Starting from the available literature, this study aims at evaluating the circularity potential of the unusual interactions among companies to support the development of an effective strategy, reducing environmental and economic pressures
Sustainability-Oriented Innovation in the Textile Manufacturing Industry: Pre-Consumer Waste Recovery and Circular Patterns
Full text linkThe textile manufacturing industry is energy- and water-intensive, and has
a great impact on the environment. Sustainability-oriented innovation can support the
transition of the textile sector towards a circular economy. This review investigates how the
textile manufacturing chain can benefit from sustainability-driven innovation strategies to
achieve the main circular economy goals. The review was conducted using the Scopus and
Web of Science scientific databases, and it addresses material, process, and organizational
innovations and covers the 2015–2024 time window. Five main areas of innovation emerged
from the retrieved papers, including digitalization, the need for innovative product and
process design and sustainable raw materials, the use of textile waste as new raw material
outside the textile value chain, waste recovery within the value chain and environmental
remediation, and organizational innovation. The innovative solutions analyzed improve
the sustainability of the textile manufacturing industry and enable the achievement of
circular economy goals. Finally, we discuss some concerns about the introduction of the
suggested innovations, including the need to apply design principles for recyclability and
durability while studying the feasibility of adopting novel materials
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