1,720,981 research outputs found
Environmental and economic sustainability assessment of an innovative building complex in Italy, designed through energy efficiency coordination
No full textThe coordination for integrated design aimed to energy efficiency (energy efficiency coordination) represents an efficient tool for sustainable constructions: structural-plant solutions that enable to achieve an integrated approach to problems related to needs of comfort and healthy housing, sustainability of building process, control of energy consumptions and use of renewable resources.
In this paper the case of multifunctional building complex “Solaria” is described: a redevelopment project of a disused industrial area, in the immediate periphery of Perugia (Italy)
Progetto e realizzazione di una casa passiva a Perugia: bilancio energetico e simulazione per la scelta di soluzioni impiantistiche ottimali
No full textCombined Heat and Power Plant and District Heating and Cooling Network: A Test-Case in Italy with Integration of Renewable Energy
No full textThe 2012 European energy efficiency directive supported the development of cogeneration combined heat and power (CHP) and district heating and cooling (DHC) networks, stressing the benefits of a more efficient energy supply, the exploitation of recovered heat, and renewable resources, in terms of fuel consumption and avoided costs/emissions. Policy decisions play a crucial role: technical and environmental feasibility of CHP is clear and well demonstrated, whereas economic issues (fuel prices, incentives, etc.) may influence its actual application. In this framework, the introduction of low-carbon technologies and the exploitation of renewable energies are profitable interventions to be applied on existing plants. This work focuses on a small CHP plant, installed in the 90 s and located within a research facility in Italy, designed to supply electricity and heat/cool through a district network. On the basis of monitored consumption of electricity, heating, and cooling, energy fluxes have been analyzed and an assessment was performed to get a management profile enhancing both operational and economic parameters. The integration of renewable energies, i.e., solar-powered systems for supporting the existing devices, has been evaluated, thus resulting in a hybrid trigeneration plant. Results demonstrate how the useful synergy between CHP and DHC can not only be profitable from the economic point of view, but it can also create conditions to considerably boost the integral deployment of primary energy sources, improving fuel diversity and then facing the challenge of climate change toward sustainable energy networks in the future
An experimental analysis of impact of Environmental Communication on energy savings related to Ecolabel Certification for accommodation facilities: the case of Hotel Los Angeles in Assisi (Italy)
No full textThe aim of the research presented in this paper is to verify, in the area of the Ecolabel certification, the impact of “Environmental Communication” on energy saving in accommodation facilities. For this reason, Los Angeles Hotel in Assisi has been analysed. An audit of the energy consumption in the year 2010 was structured according to which the European Ecolabel certification is given. Firstly, an Environmental Communication campaign and secondly Indexes representing the daily energy consumption for each customer was introduced to measure the real efficacy of the Environmental Communication strategy about energy and resources consumption. The results demonstrate that a well planned Environmental Communication strategy directed o the customers of the hotel without external changes, can produce energy and resources saving from 4% up to 20% in this case study
Analysis of Emissions into Atmosphere of the Cogeneration and District Heating Plant in Norcia (Italy)
No full textISSN 2175-542
Analyzing wind turbine directional behavior: SCADA data mining techniques for efficiency and power assessment
No full textAnalysis of Wind Turbine Wakes Through Time-Resolved and SCADA Data of an Onshore Wind Farm
No full textAn experimental study is conducted on wind turbine wakes and their effects on wind turbine performances and operation. The test case is a wind farm located on a moderately complex terrain, featuring four turbines with 2 MW of rated power each. Two interturbine distances characterize the layout: 4 and 7.5 rotor diameters. Therefore, it is possible to study different levels of wake recovery. The processed data are twofold: time-resolved series, whose frequency is in the order of the hertz, and supervisory control and data acquisition (SCADA) data with 10 min of sampling time. The wake fluctuations are investigated adopting a “slow” point of view (SCADA), on a catalog of wake events spanned over a long period, and a “fast” point of view of selected time-resolved series of wake events. The power ratios between downstream and upstream wind turbines show that the time-resolved data are characterized by a wider range of fluctuations with respect to the SCADA. Moreover, spectral properties are assessed on the basis of time-resolved data. The combination of meandering wind and yaw control is observed to be associated with different spectral properties depending on the level of wake recovery.</jats:p
Life Cycle Assessment of a Reflective Foil Material and Comparison With Other Solutions for Thermal Insulation of Buildings
No full textPresent paper aims at evaluating benefits relating to different solutions of thermal insulation in building envelope. In fact a high grade of insulation ensures better comfort conditions in inner spaces, reducing energy consumptions due to heating and cooling conditioning. The paper presents the results of a detailed Life Cycle Assessment (LCA) of a specific reflective foil, conceived and produced by an Italian company.
The results of the analysis allow to make an important comparison concerning the environmental performances, between the reflective foil and other types of insulating materials
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