A Cumulative Energy Demand indicator (CED), life cycle based, for industrial waste management decision making

Puig, Rita; Fullana–i–Palmer, Pere; Baquero, Grau; Riba, Jordi-Roger; Bala, Alba

doi:10.1016/j.wasman.2013.08.004

Cited by 48 publications

(26 citation statements)

References 30 publications

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“…The cumulative energy demand method (CED) makes it possible to define the cumulative energy demand (expressed in GJ) for particular stages of the lifecycle [74,75]. The reults of the CED analysis were the input value for determining the value of the integrated efficiency index from energy costs, from the time of the return on energy costs for modernization, and from the modernization indicator in relation to energy costs.…”

Section: Determining Costs With the Aid Of The Lca Methodsmentioning

confidence: 99%

Sustainable Wind Power Plant Modernization

et al. 2020

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The production of energy in wind power plants is regarded as ecologically clean because there being no direct emissions of harmful substances during the conversion of wind energy into electricity. The production and operation of wind power plant components make use of the significant potential of materials such as steel, plastics, concrete, oils, and greases. Energy is also used, which is a source of potential negative environmental impacts. Servicing a wind farm power plant during its operational years, which lasts most often 25 years, followed by its disassembly, involves energy expenditures as well as the recovery of post-construction material potential. There is little research in the world literature on models and methodologies addressing analyses of the environmental and energy aspects of wind turbine modernization, whether in reference to turbines within their respective lifecycles or to those which have already completed them. The paper presents an attempt to solve the problems of wind turbine modernization in terms of balancing energy and material potentials. The aim of sustainable modernization is to overhaul: assemblies, components, and elements of wind power plants to extend selected phases as well as the lifecycle thereof while maintaining a high quality of power and energy; high energy, environmental, and economic efficiency; and low harmfulness to operators, operational functions, the environment, and other technical systems. The aim of the study is to develop a methodology to assess the efficiency of energy and environmental costs incurred during the 25-year lifecycle of a 2 MW wind power plant and of the very same power plant undergoing sustainable modernization to extend its lifecycle to 50 years. The analytical and research procedure conducted is a new model and methodological approach, one which is a valuable source of data for the sustainable lifecycle management of wind power plants in an economy focused on process efficiency and the sustainability of energy and material resources.

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Section: Determining Costs With the Aid Of The Lca Methodsmentioning

confidence: 99%

Sustainable Wind Power Plant Modernization

et al. 2020

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“…The construction and decommissioning quotas are fundamental, overlooking them can lead to neglect large energy contributions. The decommissioning phases (demolition, decontamination, transport, and recycling or landfill disposal) depend on the type of materials and also on the local regulations that determine the different recycling and/or disposal scenarios [59]. It is a term which is controversial due to the great uncertainty associated and the difficulties to estimate the share of energy necessary for these purposes, in this sense, the amount of energy that must be destined for the decommissioning phase can be estimated through LCA studies or based on the knowledge of the materials used.…”

Section: Analogical Model (Am)mentioning

confidence: 99%

Energy Sustainability Analysis (ESA) of Energy-Producing Processes: A Case Study on Distributed H2 Production

Gómez-Camacho

Ruggeri

2019

Sustainability

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In the sustainability context, the performance of energy-producing technologies, using different energy sources, needs to be scored and compared. The selective criterion of a higher level of useful energy to feed an ever-increasing demand of energy to satisfy a wide range of endo- and exosomatic human needs seems adequate. In fact, surplus energy is able to cover energy services only after compensating for the energy expenses incurred to build and to run the technology itself. This paper proposes an energy sustainability analysis (ESA) methodology based on the internal and external energy use of a given technology, considering the entire energy trajectory from energy sources to useful energy. ESA analysis is conducted at two levels: (i) short-term, by the use of the energy sustainability index (ESI), which is the first step to establish whether the energy produced is able to cover the direct energy expenses needed to run the technology and (ii) long-term, by which all the indirect energy-quotas are considered, i.e., all the additional energy requirements of the technology, including the energy amortization quota necessary for the replacement of the technology at the end of its operative life. The long-term level of analysis is conducted by the evaluation of two indicators: the energy return per unit of energy invested (EROI) over the operative life and the energy payback-time (EPT), as the minimum lapse at which all energy expenditures for the production of materials and their construction can be repaid to society. The ESA methodology has been applied to the case study of H2 production at small-scale (10–15 kWH2) comparing three different technologies: (i) steam-methane reforming (SMR), (ii) solar-powered water electrolysis (SPWE), and (iii) two-stage anaerobic digestion (TSAD) in order to score the technologies from an energy sustainability perspective.

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“…So, the prevention of the continuous pollution caused by petrochemical effluents is obligatory. Expedition of novel reliable energy replacements to gasoline has been a leading challenge throughout the current century to meet the imminent energy wants [7][8][9]. Anaerobic digestion (AD) [10][11][12] presents an outstanding opening for energy conversion and pollution minimization mutually [13].…”

Section: Introductionmentioning

confidence: 99%