scholarly journals Preliminary Evaluation of a Nuclear Scenario Involving Innovative Gas Cooled Reactors

2009 ◽  
Vol 2009 ◽  
pp. 1-16 ◽  
Author(s):  
Barbara Vezzoni ◽  
Nicola Cerullo ◽  
Giuseppe Forasassi ◽  
Emil Fridman ◽  
Guglielmo Lomonaco ◽  
...  
Keyword(s):  
Energy Demand ◽  
Energy Use ◽  
Raw Materials ◽  
Substantial Reduction ◽  
Electric Energy ◽  
Point Of View ◽  
Electricity Production ◽  
Reference Level ◽  
Preliminary Evaluation ◽  
Use Of Resources

In order to guarantee a sustainable supply of future energy demand without compromising the environment, some actions for a substantial reduction of emissions are nowadays deeply analysed. One of them is the improvement of the nuclear energy use. In this framework, innovative gas-cooled reactors (both thermal and fast) seem to be very attractive from the electricity production point of view and for the potential industrial use along the high temperature processes (e.g., production by steam reforming or I-S process). This work focuses on a preliminary (and conservative) evaluation of possible advantages that a symbiotic cycle (EPR-PBMR-GCFR) could entail, with special regard to the reduction of the HLW inventory and the optimization of the exploitation of the fuel resources. The comparison between the symbiotic cycle chosen and the reference one (once-through scenario, i.e., EPR-SNF directly disposed) shows a reduction of the time needed to reach a fixed reference level from 170000 years to 1550 years (comparable with typical human times and for this reason more acceptable by the public opinion). In addition, this cycle enables to have a more efficient use of resources involved: the total electric energy produced becomes equal to 630 TWh/year (instead of only 530 TWh/year using only EPR) without consuming additional raw materials.

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 The significance of energy consumption in environmental impact of rare earth elements recovery from tailings and mining waste

2019 ◽  
Vol 108 ◽  
pp. 02011
Author(s):  
Karolina Kossakowska ◽  
Katarzyna Grzesik
Keyword(s):  
Rare Earth ◽  
Environmental Impact ◽  
Rare Earth Elements ◽  
Energy Use ◽  
Raw Materials ◽  
Electricity Production ◽  
The European Union ◽  
The Eu ◽  
Lca Results ◽  
Critical Raw Materials

Rare Earth Elements (REEs) are identified as critical raw materials for the European Union economy. REEs are not currently produced in the EU, while there are several sources not properly addressed. Within the ENVIREE project tailings from New Kankberg (Sweden) and Covas (Portugal) were identified as rich in REEs and chosen for recovery processing. The Life Cycle Assessment (LCA) methodology was used to evaluate the environmental impact of REEs recovery. The aim of this study is the detailed analysis of several scenarios with different electricity production schemes of REE recovery. The study discusses the share of energy use in the overall impact on the environment, taking into account diversification in the electricity production structure among EU countries. The energy use is a significant contributor to the overall environmental impact of studied cases. Its share in the total environmental burden is reaching up to 47%. The results show that applying the average electricity scheme production for Europe may lead to biased LCA results. For the accurate LCA results the local production schemes of energy for certain countries should be chosen.

Measurement of the Resource Consumption of a Selective Laser Melting Process

2015 ◽  
Vol 805 ◽  
pp. 205-212 ◽  
Author(s):  
Christian Gebbe ◽  
Max Lutter-Günther ◽  
Benjamin Greiff ◽  
Johannes Glasschröder ◽  
Gunther Reinhart
Keyword(s):  
Selective Laser Melting ◽  
Energy Demand ◽  
Raw Materials ◽  
Electric Energy ◽  
Melting Process ◽  
Resource Consumption ◽  
Compressed Air ◽  
Laser Melting ◽  
Cooperative Effort ◽  
Selective Laser Melting Process

One important purchasing criterion for end customers is the resource consumption of products, which manufacturers aim to reduce through sustainable product designs and optimization of production processes. In order to quantify the resource consumption, in this study the demand of raw materials and operating materials of the selective laser melting process was quantified according to the methodology developed within the initiative Cooperative Effort on Process Emissions in Manufacturing (CO2PE!). The selective laser melting process was selected due to two reasons. First, the process enables lightweight constructions, which offers the potential to reduce the resource consumption during the product use phase. Second, few studies have been published about this process so far which also measure the demand of compressed air and shielding gas apart from the electric energy demand. It was found that the resource demand for the manufactured 0.5 cm3cuboid part amounted to 3.6 kWh electric energy, 0.81 m3compressed air and 0.31 m3Argon. This corresponds to an energy demand of nearly 1000 kWh/kg, though such key performance indicators alone are not very representative for the selective laser melting process, as described below.

Measuring electric energy efficiency in Portuguese households

2015 ◽  
Vol 26 (3) ◽  
pp. 407-422 ◽  
Author(s):  
Thomas Weyman-Jones ◽  
Júlia Mendonça Boucinha ◽  
Catarina Feteira Inácio
Keyword(s):  
Time Series ◽  
Energy Efficiency ◽  
Energy Demand ◽  
Energy Use ◽  
Time Series Data ◽  
Electric Energy ◽  
Electrical Energy ◽  
Series Data ◽  
Data Set ◽  
Content Type

Purpose – There is a great interest from the European Union in measuring the efficiency of energy use in households, and this is an area where EDP has done research in both data collection and methodology. This paper reports on a survey of electric energy use in Portuguese households, and reviews and extends the analysis of how efficiently households use electrical energy. The purpose of this paper is to evaluate household electrical energy efficiency in different regions using econometric analysis of the survey data. In addition, the same methodology was applied to a time-series data set, to evaluate recent developments in energy efficiency. Design/methodology/approach – The paper describes the application to Portuguese households of a new approach to evaluate energy efficiency, developed by Filippini and Hunt (2011, 2012) in which an econometric energy demand model was estimated to control for exogenous variables determining energy demand. The variation in energy efficiency over time and space could then be estimated by applying econometric efficiency analysis to determine the variation in energy efficiency. Findings – The results obtained allowed the identification of priority regions and consumer bands to reduce inefficiency in electricity consumption. The time-series data set shows that the expected electricity savings from the efficiency measures recently introduced by official authorities were fully realized. Research limitations/implications – This approach gives some guidance on how to introduce electricity saving measures in a more cost effective way. Originality/value – This paper outlines a new procedure for developing useful tools for modelling energy efficiency.

scholarly journals Supplying the energy demand in the chicken meat processing poultry with biogas

2016 ◽  
Vol 36 (1) ◽  
pp. 118-121 ◽  
Author(s):  
Adriano Henrique Ferrarez ◽  
Delly Oliveira Filho ◽  
Adílio Flauzino Lacerda Filho ◽  
José Márcio Costa ◽  
Fabrício Segui Aparisi
Keyword(s):  
Economic Analysis ◽  
Energy Demand ◽  
Energy Use ◽  
Biogas Production ◽  
Poultry Litter ◽  
Electric Energy ◽  
Electrical Energy ◽  
Chicken Meat ◽  
Processing Unit ◽  
Meat Processing

<p>The main use of electrical energy in the chicken meat processing unit is refrigeration. About 70% of the electricity is consumed in the compressors for the refrigeration system. Through this study, the energetic viability of using biogas from poultry litter in supplying the demand for the refrigeration process was found. The meat processing unit studied has the potential to process about a hundred and sixty thousand chickens a day. The potential biogas production from poultry litter is 60,754,298.91 m3.year-1. There will be a surplus of approximately 8,103MWh per month of electric energy generated from biogas. An economic analysis was performed considering a planning horizon of 20 years and the discount rate of 12% per year. The economic analysis was performed considering scenario 1: sale of all electricity generated by the thermoelectric facility, and scenario 2: sale of the surplus electricity generated after complying with the demands of the refrigeration process and all other electrical energy and thermal energy use. Economic indicators obtained for scenarios 1 and 2 were favorable for the project implementation.</p>

scholarly journals Analysis of the Impact of Different Variables on the Energy Demand in Office Buildings

2020 ◽  
Vol 12 (13) ◽  
pp. 5347
Author(s):  
José Luis Fuentes-Bargues ◽  
José-Luis Vivancos ◽  
Pablo Ferrer-Gisbert ◽  
Miguel Ángel Gimeno-Guillem
Keyword(s):  
Energy Consumption ◽  
Energy Demand ◽  
Energy Use ◽  
Computer Software ◽  
Energy Performance ◽  
Point Of View ◽  
Regulatory Systems ◽  
Energy Behaviour ◽  
Balance Energy ◽  
The Impact

The design of near zero energy offices is a priority, which involves looking to achieve designs which minimise energy consumption and balance energy requirements with an increase in the installation and consumption of renewable energy. In light of this, some authors have used computer software to achieve simulations of the energy behaviour of buildings. Other studies based on regulatory systems which classify and label energy use also generally make their assessments through the use of software. In Spain, there is an authorised procedure for certifying the energy performance of buildings, and software (LIDER-CALENER unified tool) which is used to demonstrate compliance of the performance of buildings both from the point of view of energy demand and energy consumption. The aim of this study is to analyse the energy behaviour of an office building and the variability of the same using the software in terms of the following variables: climate zone, building orientation and certain surrounding wall types and encasements typical of this type of construction.

scholarly journals Exploring the Potential of a Gamified Approach to Reduce Energy Use and Carbon Emissions in the Household Sector

2021 ◽  
Vol 13 (6) ◽  
pp. 3380
Author(s):  
Marta Gangolells ◽  
Miquel Casals ◽  
Marcel Macarulla ◽  
Núria Forcada
Keyword(s):  
Affordable Housing ◽  
Social Housing ◽  
Energy Demand ◽  
Energy Use ◽  
Point Of View ◽  
Cumulative Energy ◽  
Cumulative Energy Demand ◽  
Private And Public ◽  
Funded Project ◽  
The Impact

This paper analyzes the impact of an innovative approach based on gamification to promote reduced energy consumption in social housing. The game was developed and validated under the auspices of the EU-funded project EnerGAware-Energy Game for Awareness of energy efficiency in social housing communities in an affordable housing pilot located in Plymouth (United Kingdom). The results showed that the future exploitation of the game holds important energy- and emissions-saving potential. Assuming that the game is distributed freely by European energy providers to their domestic end-users, the game was found to be able to save more than 48.9 secondary terawatt-hours per year (TWhs) and 18.8 million tons of CO2e annually, contributing up to around 8% to the target set for the European buildings sector to keep global warming under 2 °C. The results also showed that the game is highly feasible from the energy point of view, even when we consider the energy consumed upstream, due to its low cumulative energy demand and its potential for household energy reduction. The results of this research provide helpful information for private and public stakeholders, as they contribute to determining the sustainability of promoting energy saving through gaming.

Exergy Analysis and Optimization of a Building Air Conditioning System in Tropical Climate

2014 ◽  
Author(s):  
Ricardo Salazar ◽  
Enrico Sciubba ◽  
Claudia Toro
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Air Conditioning ◽  
Energy Use ◽  
Exergy Analysis ◽  
Electric Energy ◽  
Point Of View ◽  
Primary Sources ◽  
Renewable Energy Consumption ◽  
Air Conditioning System

The space conditioning sector is one of the highest exergy consumers and least efficient from the point of view of primary-to-end-use matching. Exergy analysis can be considered as a reliable tool for analyzing and optimizing energy consumption related to building conditioning systems. The present study presents a comparative exergy analysis of the air conditioning system of the TOTAL S.A. offices located in Caracas, Venezuela to finally achieve a reduction of the global electric energy use of the considered building. Starting from the provided thermal cooling load, different possible cooling chains (primary-to-final energy conversion chain) are considered in order to locate the thermodynamically more efficient one from an exergetic point of view. The internal air handler unit, which provides for the cooled and dehumidified air to the building, is fed by the energy obtained from different possible converters of renewable energy primary sources. Specifically, solar and hybrid photovoltaic-thermal (PV/T) panels coupled with an absorption refrigeration machine and with an ejector refrigeration cycle are analyzed. The study that has been carried on leads to identify the most convenient matching between final use and primary sources allowing to substantially reduce the global non-renewable energy consumption of the considered building.

scholarly journals Potential and trends of use clean energy in Vietnam

2020 ◽  
Vol 61 (5) ◽  
pp. 1-8
Author(s):  
Ngan Kim Thi Nguyen ◽  
Phuong Thi Hoang ◽  
Keyword(s):  
Geothermal Energy ◽  
Energy Use ◽  
Raw Materials ◽  
Clean Energy ◽  
Biomass Energy ◽  
Current Status ◽  
Domestic Waste ◽  
Use Of Resources ◽  
Resource Managers ◽  
Comprehensive Picture

Currently, the use of clean energy to replace traditional energy is a trend that most countries in the world use to solve the problem: The use of energy so that it can ensure efficient sustainable development, environmental protection, anti-climate change, especially in developing countries like Vietnam. Based on the analysis of the current status of clean energy use in Vietnam, the article gives a comprehensive picture of the potential of developing available clean raw materials such as wind, solar and biomass energy, geothermal energy, energy from domestic waste,... The results of the study are expected to be considered by resource managers in the Clean Energy Exploitation Plan for the rational use of resources and protection. environment in the context of Vietnam's current conditions.

scholarly journals Study on Household Energy Usage Patterns in Urban and Rural Areas of Nepal

2020 ◽  
Vol 15 (3) ◽  
pp. 402-410
Author(s):  
Dinesh Kumar Shahi ◽  
Hom Bahadur Rijal ◽  
Masanori Shukuya
Keyword(s):  
Rural Area ◽  
Rural Areas ◽  
Urban Areas ◽  
Energy Demand ◽  
Energy Use ◽  
Family Income ◽  
Electricity Consumption ◽  
Income Level ◽  
Electricity Production ◽  
Electricity Use

In the last decades, the household’s energy demand has increased significantly in various countries including Nepal. In the case ofNepal, 94% of energy use is in the domestic sector. There is a possibility of a huge increase in electricity production, but we are stillsuffering from load shedding due to the high electricity demand. Electricity use is an important factor for the quality of life anddevelopment of a nation. There is not a sufficient number of researches done about electricity consumption in different climaticregions of Nepal which are analyzed by the income level of residents. This study gives descriptive information on the household’senergy uses patterns and investigates the electricity use rate, using electrical appliances in households. This study also identifies themajor source of energy use and awareness of energy use. The data were collected from 442 households in three regions in the winterseason of 2018. Kalikot is a rural area, Chitwan is a semi-urban, and Kathmandu is an urban area. We have collected electricity bills,family income, and family size, electricity using appliances, expenditure for energy and energy use for heating/cooling, cooking, andlighting. The electricity was used only for lighting purposes in the rural area, but other electrical appliances were used in semi-urbanand urban areas. The amount of electricity use has not affected by household income level in the rural area, but it has affected in semi-urban and urban areas. The level of education affects the use of the LED significantly. This study would be helpful to know theelectricity use patterns which is useful for energy saving and energy management of the rural and urban areas of Nepal.

Sign in / Sign up

Export Citation Format

Share Document