3,166 research outputs found
An Integrated System for the Energy Production and Accumulation from Renewable Sources: A Rural Tower Prototype
No full textAbstractThe recent growth of renewable sources has led to relevant effects in terms of land consuming, social acceptance, distributed energy generation, non continuous production caused by non-programmable sources such as wind and solar one also characterized by low energy density per surface unit. These issues will be addressed in the next future through the concept of energy smart grid, provided by ICT (Information and Communication Technology). The aims of this paper is to show the preliminary results of the research activities carried out by several operative unities of the Universities of Perugia and Cusano, within a national research project, where one possible solution for renewable energy integration to solve the criticisms in renewable sources application is proposed modeled. The model prototype for energy production could be good applied in existing ancient building with vertical extension such as the dove towers typical of rural areas in central Italy. The preliminary design of the prototype is applied to a chosen case study in Perugia: it consists in an integrated system in which the tower is converted to an energy system for renewable energy production, storage and supply, based on photovoltaic, hydropower and geothermal heat pump with boreholes integrated to micropiles. Energy managing is leaded by an intelligent system, by combining meteorological forecasting to predict energy productions by renewables with the energy demand needs. In particular, the concept of this project is mainly effective because in the rural areas there are many little building centers that are abandoned because they are without any connection to the electricity grid and methane piping: the possibility to create an autonomous energy system is the basis for energy supply
Cippato di legna per l’edilizia residenziale: il primo impianto termico in Umbria”, 10° Congresso Nazionale Ciriaf
No full textdispositivo per l'elettrificazione di infrastrutture stradali e barriera acustica fotovoltaica (DEIS)
No full textL’impatto acustico sul territorio prodotto da infrastrutture viarie come le autostrade ed altre strade a scorrimento veloce può essere mitigato mediante l’impiego di un sistema costituito da barriere acustiche integrate con pannelli per la produzione di energia fotovoltaica impiegata per l’elettrificazione della corsia dei mezzi pesanti ed autobus, al fine di alimentarne i motori elettrici o ibridi. L’elettrificazione parziale della tratta stradale interessata dal flusso veicolare pesante consente, oltre alla mitigazione acustica dell’area prospiciente, una riduzione locale delle emissioni odorigene ed inquinanti. Le barriere, sviluppandosi lungo la carreggiata, non determinano alcun consumo di territorio e possono essere inserite all’interno di una rete più ampia organizzata lungo il percorso autostradale ed integrata con altri sistemi di produzione accumulo ed erogazione di energia rinnovabile
A imagem de Alessandro Baricco no Brasil
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Estudos da Tradução, Florianópolis, 2013.Com a intenção de delinear o modo pelo qual o escritor italiano Alessandro Baricco se inseriu no sistema literário brasileiro e os caminhos percorridos pelos seus livros traduzidos, esta dissertação dá voz às experiências tradutórias de seus tradutores. A inserção de Bariccono Brasil tem seu início em 1997, através de uma proposição da Profa. Dra. Roberta Barni à editora Iluminuras da tradução de Oceano Mare. A partir daí, outras sete obras foram publicadas no Brasil, sendo três delas traduzidas por Roberta Barni e as outras quatro por quatro tradutores diferentes. De um lado, considera-se o tradutor como figura principal namediação entre culturas, e, de outro, se analisa a realidade desta figuradentro do sistema literário, sua invisibilidade, seus limites e o exercíciode sua profissão. A pesquisa conta, ainda, com críticas e resenhas referentes ao autor italiano publicadas em jornais consagrados no Brasil, considerando estas como parte constituinte da imagem de Baricco refletida em território nacional. Abstract : Intending to delineate the way the Italian writer Alessandro Baricco has been inserted in the Brazilian literary system and the paths his translated books have followed, this thesis gives voice to the translating experiences of his translators. Baricco's insertion in Brazil began in 1997, through a personal project of Dr. Roberta Barni, with her translation of Oceano Mare. Since then, seven other of his works have been published in Brazil, three of which were translated by Roberta Barni and the other four by four different translators. On the one hand,the translator is considered as the main figure in mediation betweencultures and, on the other, this figure's reality is analyzed within theliterary system: its invisibility, its limits and its professional practice. Criticisms and reviews of this Italian author published in well established Brazilian newspapers are also considered, with the understanding that they are part of Baricco's image reflected here
Energy Refurbishment of Historical Buildings with Public Function: Pilot Case Study
No full textAbstractIn the last few decades, an increasing attention has been paid to the enhancement of energy performance and indoor comfort conditions of historical buildings, where the architectural heritage and artistic value do not allow typical retrofit intervention. The need to enhance the energy efficiency and environmental sustainability of historic buildings is addressed in this paper, through energy modeling and dynamic simulation of a real building with the integration of renewable energy plants for building heating and cooling. The pilot case study is “Palazzo Gallenga Stuart”, a historical university building located in Perugia, Italy. The energy performance of the building has been evaluated in order to reduce the building energy demand through the implementation of high-efficiency technologies in historic buildings. The increase of the energy efficiency of the building has been pursued through the improvement of the actual energy plants’ technology by introducing a more effective heat pump plant, in order to prevent the use of visually impacting external units on building historic façade
Characterization of Various Biomass Feedstock Suitable for Small-Scale Energy Plants as Preliminary Activity of Biocheaper Project
No full textThe PRIN (Research Project with Relevant National Interest) project “Biocheaper—biomasses circular holistic economy approach to energy equipments” started in September 2019 and involves several universities: Palermo as the university coordinator, Perugia, Cassino, Enna, Pavia and Bolzano. The main goal of the project is to increase the energy efficiency and reduce the pollutants emissions in small-scale biomass plant for energy (heat and power) production. The project focuses on residual lignocellulosic feedstocks from the agriculture and forestry sector, from energy crops in marginal lands and residues from rivers maintenance. Starting from the selection and characterization of potential feedstocks, the project aims at developing some prototypes for retrofit applications in existing biomass boilers, like a mini-cyclone for the reduction of particulate emissions and an exhaust air-water condensing system for the recovery of water and the reuse in agriculture. This work presents the first results of the project, in particular regarding the selection and the chemical–physical characterization of different biomass, available in different zones of Italy; in particular the authors investigated cardoon chips, carthamus chips, olive and wine pruning, residues from rivers maintenance. Each biomass sample was characterized in terms of moisture content, ashes content, volatile substances, fixed carbon, low and high heating value, content of carbon, nitrogen, hydrogen and main metals
Cellulose Nanocrystals Obtained from Cynara Cardunculus and Their Application in the Paper Industry
No full textBiorefinery aims at designing new virtuous and high-efficiency energy chains, achieving the combined production of biofuels (e.g., bioethanol) and biobased products. This emerging philosophy can represent an important opportunity for the industrial world, exploiting a new kind of nano-smart biomaterials in their production chains. This paper will present the lab experience carried out by the Biomass Research Centre (CRB) in extracting cellulose nanocrystals (NCC) from a pretreated (via Steam Explosion) fraction of Cynara cardunculus. This is a very common and invasive arboreal variety in central Italy. The NCC extraction methodology allows the separation of the crystalline content of cellulose. Such a procedure has been considered in the literature with the exception of one step in which the conditions have been optimized by CRB Lab. This procedure has been applied for the production of NCC from both Cynara cardunculus and microcrystalline cellulose (MCC). The paper will discuss some of the results achieved using the obtained nanocrystals as reinforcing filler in a paper sheet; it was found that the tensile strength increased from 3.69 kg/15 mm to 3.98 kg/15 mm, the durability behavior (measured by bending number) changed from the value 95 to the value 141, and the barrier properties (measured by Gurley porosity) were improved, increasing from 38 s to 45 s
Evaluation of the odor impact of some environmental gaseous pollutants: calibration of the methodology and preliminary results
No full textDuring the last decades, it has been observed a growing interest on odor impact because of the frequenter social acceptability problems about energy plants handling and processing stored organic materials (e.g., biogas plants, landfills, farms, distilleries, etc.). In this context, the UNI EN 13725:2004 indicates the “dynamic olfactometry method” as validated, recognized, and adequate measurement procedure for estimating the odor concentration. This protocol is carried out by a panel of specifically trained and selected human receptors, but alternative analytical methodologies are currently under discussion. This work aims to describe the initial steps of a wider research toward the definition of a new analytical protocol for monitoring odor concentration. The alternative methodology is here presented through the implementation of a case study: stored organic materials exploited on an energy plant in Central Italy. The paper describes the preliminary activities related to the survey of the case study (i), the definition of alternative methods and devices for conducting emissions sampling (ii), and the adopted experimental approach (iii). Finally, preliminary results are also presented (iv). The resulting protocol, once validated, could be employed by local authorities to measure both the odor impacts and the effectiveness of specifically designed mitigation strategies
Nanocrystalline cellulose from lignocellulosic biomass: applications and future prospects
No full textLignocellulosic Biomass Feeding in Biogas Pathway: State of the Art and Plant Layouts
No full textAbstractThe traditional pathway for biogas production consists in the anaerobic digestion of starchy and sugar biomass mainly from dedicated energy crops, needing agricultural land and heavy irrigation. A retrofitting of the existing biogas plants is proposed in order to reduce competition with food crops and to increase the sustainability of the whole chain in terms of land and water consumption; moreover the use of the lignocellulosic biomass is evaluated. The biomass after physical, chemical or biological pretreatment can be digested in a biogas plant to reduce the current diet without affecting the biogas production.The present study analyzes the state of the art in the lignocellulosic biomass feeding into biogas plants and describes a preliminary techno-economical study of the pathway and the layout to be adopted, including the efficiencies and energy yields of the involved processes
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