Comparative Life-cycle Analysis of Photovoltaics Based on Nano-materials: A Proposed Framework

2007 ◽  
Vol 1041 ◽  
Author(s):  
Hyung Chul Kim ◽  
V. Fthenakis ◽  
S. Gualtero ◽  
R. van der Meulen ◽  
H. C. Kim
Keyword(s):  
Life Cycle ◽  
Life Cycle Analysis ◽  
Energy Production ◽  
New Technologies ◽  
Nano Materials ◽  
Analysis Framework ◽  
New Energy ◽  
New Material ◽  
Material Utilization ◽  
Conversion Efficiencies

AbstractLife cycle analysis becomes especially important for characterizing new material forms in new energy generation technologies intended to replace or improve the current infrastructure of energy production. We propose a comparative life-cycle analysis framework for investigating the effect of introducing nanotechnology in the life cycle of new photovoltaics, which focuses on the differences between the new technologies and the ones that they may replace. The following parameters are investigated within this framework: methods of synthesizing nanoparticles, physicochemical specifications of the precursors, material utilization rates, deposition rates, energy-conversion efficiencies, and lifetime expectancy of the final product. We introduce the application of this framework in comparing nano-structured cadmium telluride and silicon films with their nano- and amorphous- structured equivalents.

scholarly journals Life Cycle Analysis of Energy Production from Food Waste through Anaerobic Digestion, Pyrolysis and Integrated Energy System

2017 ◽  
Vol 9 (10) ◽  
pp. 1804 ◽  
Author(s):  
Suraj Adebayo Opatokun ◽  
Ana Lopez-Sabiron ◽  
German Ferreira ◽  
Vladimir Strezov
Keyword(s):  
Life Cycle ◽  
Anaerobic Digestion ◽  
Food Waste ◽  
Life Cycle Analysis ◽  
Energy Production ◽  
Energy System ◽  
Integrated Energy System

Life Cycle Analysis on Energy Efficiency and CO2 Emissions of China’s New Energy City Bus

2012 ◽  
Vol 512-515 ◽  
pp. 2598-2602 ◽  
Author(s):  
Dong Bo Yang ◽  
Li Liu ◽  
Ceng Zeng ◽  
Li Bo Han
Keyword(s):  
Energy Efficiency ◽  
Life Cycle ◽  
Life Cycle Analysis ◽  
Cycle Performance ◽  
Oil Consumption ◽  
City Bus ◽  
Electric Bus ◽  
New Energy ◽  
Wheel Model ◽  
Good Potential

Life cycle analysis provides global research methods for the assessment of life cycle performance. In this research, a WTW（well to wheel）model was introduced to study and compare the energy efficiency and CO2 emissions from diesel bus, CNG bus and electric bus. The results show that the WTW total energy efficiency of diesel bus is 1790MJ/100km. The energy efficiency of CNG bus is 6% lower than that of diesel bus, while the energy efficiency of electric bus is 36% higher than that of diesel bus. Both CNG bus and electric bus show good potential of oil replacement with oil consumption decrease of 98% and 90%. As more than 80% of China’s electricity is produced by coal, electric bus has equal effect as CNG bus on CO2 reduction. Compared to diesel bus, CO2 emissions from new energy bus are reduced by 14%.

scholarly journals The main problems of using biomass as a fuel

2021 ◽  
Vol 295 ◽  
pp. 02004
Author(s):  
Dmitry Solovyev ◽  
Liubov Shilova ◽  
Maksim Zheleznov
Keyword(s):  
Renewable Energy ◽  
Energy Production ◽  
New Technologies ◽  
Renewable Energy Sources ◽  
Operating Time ◽  
Clean Energy ◽  
Energy Sources ◽  
Fuel Use ◽  
New Energy ◽  
Combustible Gases

The article discusses the main problems of the using of biomass as a fuel, including the fuel use of biomass as an innovative way to generate clean energy. It is shown that according to the development of technology for the production of renewable energy sources, energy costs will decrease, and the operating time of the devices and, accordingly, their productivity will increase. Ultimately, this will allow to get a positive result, i.e. reduce harmful emissions from energy production. The methodology basis on the open statistics data and analysis of the energy balance of new energy production technologies are considered. The motivation for the using renewable energy sources in industrialized and developing countries is investigated. A review of new technologies for the using biomass as a fuel is made, which allows for efficient processing of biomass, including gasification, co-production of heat and electricity, fuel use of combustible gases generated at landfills, and production of fuel for transport in the form of methanol and biodiesel.

scholarly journals Villamosenergiatermelés és környezeti hatásai

2020 ◽  
Vol 15 (28) ◽  
pp. 86-130
Author(s):  
István Bodnár ◽  
Dávid Matusz-Kalász ◽  
Dávid Faragó ◽  
Árpád Bence Palotás ◽  
Zoltán Károly Siménfalvi
Keyword(s):  
Life Cycle ◽  
Power Plant ◽  
Power Consumption ◽  
Electric Power ◽  
Life Cycle Analysis ◽  
Energy Demand ◽  
Energy Production ◽  
Plant System ◽  
Full Life Cycle ◽  
Full Life

Nowadays, increasing energy demand poses increasing challenges to professionals. While aligning with international guidelines and changing societal attitudes urge to prefer renewables and increase efficiency of electric power consumption. Replacing the current aging power plant system holds several issues and tasks that may not have been explored so far. To get an accurate, comprehensive view of these, it is essential to apply full life cycle analysis to ensure sustainable energy production.

scholarly journals Avaliação ambiental dos processos construtivos de estrutura metálica e pré-moldada de concreto por meio de análise do ciclo de vida

2013 ◽  
Vol 3 (3) ◽  
pp. 200-212
Author(s):  
F. Mantovani ◽  
L. D. Sebastiany ◽  
R. Christ ◽  
M. Mancio
Keyword(s):  
Life Cycle ◽  
Life Cycle Analysis ◽  
New Technologies ◽  
Raw Materials ◽  
Precast Concrete ◽  
Steel Structures ◽  
Production Model ◽  
New Techniques ◽  
Environmentally Sustainable ◽  
Steel Column

RESUMOAs preocupações com a escassez de recursos naturais e com a degradação do meio ambiente motivaram o surgimento de novas técnicas que auxiliam as empresas na implantação de um modelo de produção mais sustentável. Têm-se desenvolvido novas tecnologias e materiais ambientalmente corretos, além de sistemas de avaliação e ferramentas de apoio à tomada de decisões na fase de projeto. A análise do ciclo de vida surge como uma ferramenta para análise e escolha de alternativas sob uma perspectiva puramente ambiental. O presente trabalho fornece dados experimentais sobre o fluxo de matérias-primas, produtos e resíduos, dos processos produtivos de um pilar de aço e um pilar pré-moldado de concreto armado. Os resultados desta análise comparativa (obtida através do software GaBi) foram submetidos à uma análise hierárquica de processo, realizada utilizando o software Make-it-Rational. Concluiu-se que o pilar de aço é mais impactante negativamente se comparado com um pilar pré-moldado de concreto.Palavras chave: Análise do ciclo de vida; estrutura pré-moldada de concreto; estrutura metálica.ABSTRACTConcerns about the reduced availability of natural resources and the increased degradation of the environment have stimulated the appearance of new techniques which can help companies to implement a more environmentally sustainable production model. Because of that, new technologies and environmentally friendly materials have been developed, such as assessment systems and tools to support decision-making early on, during the design process. Life cycle analysis (LCA) emerges as a powerful tool for analyzing and choosing alternatives from an environmental perspective. This study provides experimental data on the flow of raw materials, products and waste, on the production process of a precast concrete column and a steel column. To make this analysis, the GaBi software was used. Results show that the steel column has greater environmental impact when compared with a reinforced concrete alternative.Keywords: Life cycle analysis; precast concrete structures; steel structures.

Estimation of Recoverable Household Waste Cooking Oil and Life Cycle Analysis of Biodiesel Fuel Production

2008 ◽  
Vol 4 (4) ◽  
pp. 318-323 ◽  
Author(s):  
Hirotsugu KAMAHARA ◽  
Shun YAMAGUCHI ◽  
Ryuichi TACHIBANA ◽  
Naohiro GOTO ◽  
Koichi FUJIE
Keyword(s):  
Life Cycle ◽  
Life Cycle Analysis ◽  
Waste Cooking Oil ◽  
Household Waste ◽  
Biodiesel Fuel ◽  
Fuel Production ◽  
Cooking Oil

A Life Cycle Analysis of the Conflicting Military Issues in Korea

2019 ◽  
Vol 28 (1) ◽  
pp. 131-158
Author(s):  
Hanbyeol Yoo ◽  
T.J. Lah
Keyword(s):  
Life Cycle ◽  
Life Cycle Analysis
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