104 research outputs found
An LCA case study of a thermal insulation panel made of polyester fiber recycled from post consumer PET bottles
No full textBackground, aim, and scope The interest in polyethylene
terephthalate (PET) recycling is quite recent, but it has been
growing steadily over the past few years. In this context,
the aim of this paper is to assess the eco-profile, the energy
savings and the environmental benefits of the use of
recycled raw materials to manufacture products for thermal
insulation of buildings in Italy (i.e., PET bottles postconsumer).
Materials and methods The life cycle analysis is developed
according to ISO 14040/44. In this paper, based on the
LCA, the main types of environmental impact of a thermal
insulation product have been outlined. This study is
specifically focused on polyester nonwovens, produced by
a company located in Italy. The cradle-to-gate life cycle
inventory is performed for the mass of product needed to
give a thermal resistance R of 1(m2 K/W). The calculation
of the impacts is done with SimaPro software. With an
environmental product declaration-oriented approach, a set
of impact categories is used for the classification and
characterisation of the life cycle impact assessment.
Results The results of the impact assessment for 1m2 K/W
of thermal insulation panels made with recycled PET are
then compared with similar products made with virgin PET.
The lower impact associated with the recycled PET for each
category is underlined: the percentage reduction is around
46% in the GWP category. In the production process, the
fiber-spinning phase results as the most relevant in terms of
energy consumption. In addition, the energy saved when
applying the thermal insulation in a building is estimated at
87 MJ/m2 per unit area per year in Rome. All the energy
used during the production of a thermal insulation panel is
recovered in about 2 years.
Conclusions The product shows significantly low environmental
impacts thanks to the use of non-virgin PET, thus
maintaining high mechanical and physical properties. If the
recovery of PET from separate waste collection in Italy
increases, this would reduce the share of waste PET
purchased from foreign countries and would therefore
reduce further the impact of transports for the production
of the thermal insulation panel under investigation
Energy recovery of the solid waste of the olive oil industries– LCA analysis and carbon footprint assessment
No full textTecniche Evolutive applicate alla raccolta giornaliera dei rifiuti
No full textUn algoritmo genetico per determinare il percorso ottimale di raccolta differenziata dei rifiuti nell’area intermunicipale in provincia di Bar
Energy Recovery of theSolid Waste of the Olive Oil Industries–LCA Analysis and Carbon Footprint Assessment
No full textRenewable energy technologies contribute to the mitigation of climate change impacts through reduction in the emission of greenhouse gases (GHG) such as carbon dioxide. In this paper, a power plant located in Italy and fed with waste deriving from the olive oil industries is considered. The de-oiled pomace is characterised by lower caloric value equal to 4000 kcal/kg, by low content of nitrogen and sulphur and by the absence of heavy metals. A plant for the production of energy from biomass (de-oiled pomace and waste wood) is analyzed through a Life Cycle Assessment (LCA) approach. The carbon dioxide equivalent (kgCO2eq) emitted into the atmosphere is equal to 0.0597 kgCO2eq /kWh. The GHG emissions have been compared with those of a plant for energy production that uses refuse derived fuel (RDF) and with those of one that uses coal. The environmental benefits are quantified and the possibilities to develop the use of the pomace-to-energy at national level are estimated
Applicazione della teoria di Shapley ad un sistema di gestione della raccolta intermunicipale dei rifiuti
No full textLife cycle assessment (LCA) of an energy recovery plant in the olive oil industries
No full textTo reduce the GHG emissions in the UE and to increase the produced energy it is important to spread out
decentralized technologies for renewable energy production. In this paper a power plant fed with biomass
is studied, in particular the biomass considered is the waste of the olive oil industries. This study focuses
on the possibility of using the de-oiled pomace and waste wood as fuel. A life cycle assessment (LCA) of
a biomass power plant located in the South of Italy was performed. The global warming potential has
been calculated and compared with that of a plant for energy production that uses refuse derived fuel
(RDF) and that of one that uses coal. The LCA shows the important environmental advantages of
biomass utilization in terms of greenhouse gas emissions reduction. An improved impact assessment
methodology may better underline the advantages due to the biomass utilization
Analysis of sustainability assessment of building windows for italian residential market: life cycle analysis and LEED
No full textAnalysis of the energy performance strategies of school buildings site in the Mediterranean climate: A case study the schools of Matera city
No full textEnergy consumption of the public building stock represents an important cost of the balance of a state. Moreover, public buildings, in particular schools, should be buildings with elevated comfort levels because student and teachers spend much time in these rooms. The wellness and productive capacity of students and teachers are primarily affected by the comfort inside and air quality of school rooms.
Regarding energy use, school buildings waste much energy because most buildings were constructed before the 1991 and energy saving measures were only implemented in a few schools.
This paper analyses the energy performance of eight different schools located in Matera city, southern Italy. The aim of this research is to analyse energy requirement utilizing dynamic analyses with a time step of one hour (using Energy-Plus method). Next, the values of the dynamic analyses were compared to the effective energy consumption. Using the results of this comparison, we validated the numerical model, and then, we analysed different energy auditing actions for these buildings. We included the energy auditing works in three categories: energy restoration of the envelope, of the plant and of both. For each of these categories, we calculated the energy savings. Ultimately, we analysed the environmental benefits of the three different categories in terms of CO2 reduction. This research confirmed that the dynamic method is the best method to achieve a good energy analysis of these complex buildings
- …
