Environmental Benefits of Elementary School’s Renovation

2014 ◽  
Vol 1041 ◽  
pp. 217-221
Author(s):  
Karel Struhala ◽  
Petr Jelínek ◽  
Zuzana Stránská ◽  
Jiří Sedlák
Keyword(s):  
Energy Consumption ◽  
Environmental Performance ◽  
Energy Demand ◽  
Environmental Benefits ◽  
Cumulative Energy ◽  
Cumulative Energy Demand ◽  
Financial Reports ◽  
Design Office ◽  
Before And After

This paper shows partial results of IEA ECBCS Annex 56 which deals with energy-, economically-and environmentally-efficient renovations of buildings. It describes one of the assessed case studies - renovation of elementary school Kamínky 5 in Brno-Nový Lískovec, Czech Republic into low-energy standard. The school was built in 1959 and renovated in 2009 and 2010. The renovation significantly reduced energy consumption of the school. The energy consumption (heat, electricity) as well as environmental performance (represented by CO2 emissions, non-renewable and cumulative energy demand) of the school, both before and after the renovation, is described in detail in the paper. Data about the energy consumption are based on audits and financial reports that has been provided by the Borough Office Brno – Nový Lískovec. Data for the environmental assessment are taken from renovation‘s designs (provided by design office Menhir project s. r. o.) and in-situ inspection.

scholarly journals Cleaner Production and LCA as Complementary Tools in Environmental Assessment: Discussing Tradeoffs Assessment in a Case of Study within the Wood Sector in Brazil

2019 ◽  
Vol 11 (18) ◽  
pp. 5026 ◽  
Author(s):  
Ronald Panameño ◽  
Carlos Mario Gutiérrez-Aguilar ◽  
Beatriz Elena Angel ◽  
Sandro Fábio-César ◽  
Asher Kiperstok
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Assessment ◽  
Energy Demand ◽  
Cleaner Production ◽  
Environmental Benefits ◽  
Cumulative Energy ◽  
Cumulative Energy Demand ◽  
Production Program ◽  
Final Destination

Cleaner production has been used for several years in Latin America to minimize waste generation while reducing material and energy consumption. Despite those environmental benefits, its implementation may sometimes lead to changes in products or processes whose environmental performance can yield either positive or negative outputs when examined within a broader context, meaning it is necessary to complement cleaner production with other environmental tools that can provide environmental assessments. This paper presents a combination of cleaner production with life cycle assessment (LCA) applied within the wood industry in a case study in Salvador, a state of Bahia (Brazil), regarding the production of two models of wooden chairs. The study selected life cycle assessment as a scientific tool to quantify the environmental impacts of the models having ILCD 2011 midpoint and cumulative energy demand methods. The results confirmed the presence of environmental tradeoffs among the models that were not considered during the cleaner production program implemented. This paper also includes a proposal of a flowchart to guide the implementation of cleaner production when deciding to implement changes in material, energy source, processes, final destination, or lifespan of the product evaluated, identifying the stages where environmental assessment like life cycle assessment may be required to address tradeoffs.

scholarly journals Impact of Service Life on the Environmental Performance of Buildings

Buildings ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 9 ◽  
Author(s):  
Shahana Janjua ◽  
Prabir Sarker ◽  
Wahidul Biswas
Keyword(s):  
Life Cycle ◽  
Service Life ◽  
Environmental Performance ◽  
Energy Demand ◽  
Cumulative Energy ◽  
Cumulative Energy Demand ◽  
Building Components ◽  
Environmental Performance Assessment ◽  
Increasing Demand ◽  
The Impact

The environmental performance assessment of the building and construction sector has been in discussion due to the increasing demand of facilities and its impact on the environment. The life cycle studies carried out over the last decade have mostly used an approximate life span of a building without considering the building component replacement requirements and their service life. This limitation results in unreliable outcomes and a huge volume of materials going to landfill. This study was performed to develop a relationship between the service life of a building and building components, and their impact on environmental performance. Twelve building combinations were modelled by considering two types of roof frames, two types of wall and three types of footings. A reference building of a 50-year service life was used in comparisons. Firstly, the service life of the building and building components and the replacement intervals of building components during active service life were estimated. The environmental life cycle assessment (ELCA) was carried out for all the buildings and results are presented on a yearly basis in order to study the impact of service life. The region-specific impact categories of cumulative energy demand, greenhouse gas emissions, water consumption and land use are used to assess the environmental performance of buildings. The analysis shows that the environmental performance of buildings is affected by the service life of a building and the replacement intervals of building components.

scholarly journals Life Cycle Assessment of Bioplastics and Food Waste Disposal Methods

2021 ◽  
Vol 13 (12) ◽  
pp. 6894
Author(s):  
Shakira R. Hobbs ◽  
Tyler M. Harris ◽  
William J. Barr ◽  
Amy E. Landis
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Anaerobic Digestion ◽  
Waste Management ◽  
Food Waste ◽  
Energy Demand ◽  
Anaerobic Digester ◽  
Management Scenarios ◽  
Cumulative Energy ◽  
Cumulative Energy Demand

The environmental impacts of five waste management scenarios for polylactic acid (PLA)-based bioplastics and food waste were quantified using life cycle assessment. Laboratory experiments have demonstrated the potential for a pretreatment process to accelerate the degradation of bioplastics and were modeled in two of the five scenarios assessed. The five scenarios analyzed in this study were: (1a) Anaerobic digestion (1b) Anaerobic digestion with pretreatment; (2a) Compost; (2a) Compost with pretreatment; (3) Landfill. Results suggested that food waste and pretreated bioplastics disposed of with an anaerobic digester offers life cycle and environmental net total benefits (environmental advantages/offsets) in several areas: ecotoxicity (−81.38 CTUe), eutrophication (0 kg N eq), cumulative energy demand (−1.79 MJ), global warming potential (0.19 kg CO2), and human health non-carcinogenic (−2.52 CTuh). Normalized results across all impact categories show that anaerobically digesting food waste and bioplastics offer the most offsets for ecotoxicity, eutrophication, cumulative energy demand and non-carcinogenic. Implications from this study can lead to nutrient and energy recovery from an anaerobic digester that can diversify the types of fertilizers and decrease landfill waste while decreasing dependency on non-renewable technologies. Thus, using anaerobic digestion to manage bioplastics and food waste should be further explored as a viable and sustainable solution for waste management.

scholarly journals Application of Life-cycle Assessment for the Study of Carbon and Water Footprints of the 16.5 MWe Wind Farm in Villonaco, Loja – Ecuador

2021 ◽  
Author(s):  
Alberto Tama Franco
Keyword(s):  
Climate Change ◽  
Life Cycle ◽  
Energy Demand ◽  
Wind Farm ◽  
Renewable Energy Sources ◽  
Electric Energy ◽  
Electricity Production ◽  
Energy Sources ◽  
Cumulative Energy ◽  
Cumulative Energy Demand

Wind technology is considered to be among the most promising types of renewable energy sources, and due to high oil prices and growing concerns about climate change and energy security, it has been the subject of extensive considerations in recent years, including questions related to the relative sustainability of electricity production when the manufacturing, assembly, transportation and dismantling processes of these facilities are taken into account. The present article evaluates the environmental impacts, carbon emissions and water consumption, derived from the production of electric energy of the Villonaco wind farm, located in Loja-Ecuador, during its entire life cycle, using the Life Cycle Analysis method. Finally, it is concluded that wind energy has greater environmental advantages, since it has lower values of carbon and water footprints than other energy sources. Additionally, with the techniques Cumulative Energy Demand and Energy Return on Investment, sustainability in the production of electricity from wind power in Ecuador is demonstrated; and, that due to issues of vulnerability to climate change, the diversification of its energy mix is essential considering the inclusion of non-conventional renewable sources such as solar or wind, this being the only way to reduce both the carbon footprint and the water supply power.

scholarly journals Strategies for school buildings refurbishment in Portuguese climate

2020 ◽  
Vol 172 ◽  
pp. 18007
Author(s):  
Francisca Cavaleiro Barbosa ◽  
Vasco Peixoto de Freitas ◽  
Manuela Almeida
Keyword(s):  
Energy Consumption ◽  
Natural Ventilation ◽  
Sensitivity Study ◽  
School Buildings ◽  
Local Climate ◽  
Before And After ◽  
Insulation Thickness ◽  
Free Running ◽  
Near Future

Portuguese school buildings are generally characterized by an in-service thermal discomfort, due to the poor envelope thermal properties and the lack of resources for paying energy consumption. Most Portuguese schools are free-running buildings with a natural ventilation strategy. Hundreds of high and basic schools have not been refurbished and still have problems or anomalies and inadequate in-service conditions and need to be rehabilitated in the near future. There will be, therefore, an opportunity to apply the acquired knowledge of comfort, habits, energy consumption and costs that have been studied since the last refurbishments (2008). This work studies the Portuguese Brandão schools model (from the ’70s), including about 100 non-refurbished basic schools. A prototype classroom was prepared in a Brandão school, in Porto. The in situ experimental campaign consisted of temperature, relative humidity, CO2 concentration and energy consumption measurements. The main tasks of this work are: (1) the validation of an advanced hygrothermal model with experimental measurements before and after the prototype refurbishment; (2) development of a sensitivity study in order to choose the best refurbishment and heating strategies for these buildings, regarding their typology, the local climate features and the actual capacity to support the operating costs; (3) assessment of the roof insulation thickness in Brandão schools; (4) quantification of discomfort indicators.

scholarly journals Review on Life Cycle Assessment of Solar Photovoltaic Panels

Energies ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 252 ◽  
Author(s):  
Vincenzo Muteri ◽  
Maurizio Cellura ◽  
Domenico Curto ◽  
Vincenzo Franzitta ◽  
Sonia Longo ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impacts ◽  
Energy Demand ◽  
Geographical Location ◽  
Laboratory Research ◽  
Cumulative Energy ◽  
Cumulative Energy Demand ◽  
Environmental Indices ◽  
Silicon Based

The photovoltaic (PV) sector has undergone both major expansion and evolution over the last decades, and currently, the technologies already marketed or still in the laboratory/research phase are numerous and very different. Likewise, in order to assess the energy and environmental impacts of these devices, life cycle assessment (LCA) studies related to these systems are always increasing. The objective of this paper is to summarize and update the current literature of LCA applied to different types of grid-connected PV, as well as to critically analyze the results related to energy and environmental impacts generated during the life cycle of PV technologies, from 1st generation (traditional silicon based) up to the third generation (innovative non-silicon based). Most of the results regarded energy indices like energy payback time, cumulative energy demand, and primary energy demand, while environmental indices were variable based on different scopes and impact assessment methods. Moreover, the review work allowed to highlight and compare key parameters (PV type and system, geographical location, efficiency), methodological insights (functional unit, system boundaries, etc.), and energy/environmental hotspots of 39 LCA studies relating to different PV systems, in order to underline the importance of these aspects, and to provide information and a basis of comparison for future analyses.

scholarly journals Life Cycle Assessment of Reusable Plastic Crates (RPCs)

Resources ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 110 ◽  
Author(s):  
Camilla Tua ◽  
Laura Biganzoli ◽  
Mario Grosso ◽  
Lucia Rigamonti
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Sustainability ◽  
Energy Demand ◽  
Hot Water ◽  
Cumulative Energy ◽  
Cumulative Energy Demand ◽  
Environmental Effectiveness ◽  
Single Use ◽  
Italian Context

The European packaging market is forecast to grow 1.9% annually in the next years, with an increasing use of returnable packages. In this context, it is important to assess the real environmental effectiveness of the packaging re-use practice in terms of environmental impacts. This life cycle assessment aims to evaluate the environmental performances of reusable plastic crates (RPCs), which are used for the distribution of 36% of fruit and vegetables in Italy. RPCs can be re-used several times after a reconditioning process, i.e., inspection, washing, and sanitization with hot water and chemicals. The analysis was performed considering 12 impact categories, as well as the cumulative energy demand indicator and a tailor-made water consumption indicator. The results show that when the RPCs are used for less than 20 deliveries, the impacts of the life cycle are dominated by the manufacturing stage. By increasing the number of deliveries, the contribution of the reconditioning process increases, reaching 30–70% of the overall impacts for 125 uses. A minimum of three deliveries of the RPCs is required in order to perform better than an alternative system where crates of the same capacity (but 60% lighter) are single-use. The same modeling approach can be used to evaluate the environmental sustainability of other types of returnable packages, in order to have a complete overview for the Italian context and other European countries.

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