The Experts below are selected from a list of 5517 Experts worldwide ranked by ideXlab platform
Marcello Braglia - One of the best experts on this subject based on the ideXlab platform.
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The analytic hierarchy process applied to maintenance strategy selection
Reliability Engineering & System Safety, 2000Co-Authors: Maurizio Bevilacqua, Marcello BragliaAbstract:This paper describes an application of the Analytic Hierarchy Process (AHP) for selecting the best maintenance strategy for an important Italian oil refinery (an Integrated Gasification and Combined Cycle Plant). Five possible alternatives are considered: preventive, predictive, condition-based, corrective and opportunistic maintenance. The best maintenance policy must be selected for each facility of the Plant (about 200 in total). The machines are clustered in three homogeneous groups after a criticality analysis based on internal procedures of the oil refinery. With AHP technique, several aspects, which characterise each of the above-mentioned maintenance strategies, are arranged in a hierarchic structure and evaluated using only a series of pairwise judgements. To improve the effectiveness of the methodology AHP is coupled with a sensitivity analysis.
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Analytic hierarchy process applied to maintenance strategy selection
Reliability Engineering and System Safety, 2000Co-Authors: Maurizio Bevilacqua, Marcello BragliaAbstract:This paper describes an application of the Analytic Hierarchy Process (AHP) for selecting the best maintenance strategy for an important Italian oil refinery (an Integrated Gasification and Combined Cycle Plant). Five possible alternatives are considered: preventive, predictive, condition-based, corrective and opportunistic maintenance. The best maintenance policy must be selected for each facility of the Plant (about 200 in total). The machines are clustered in three homogeneous groups after a criticality analysis based on internal procedures of the oil refinery. With AHP technique, several aspects, which characterize each of the above-mentioned maintenance strategies, are arranged in a hierarchic structure and evaluated using only a series of pairwise judgements. To improve the effectiveness of the methodology AHP is coupled with a sensitivity analysis.
H. K. Ho - One of the best experts on this subject based on the ideXlab platform.
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Life Cycle energy, emissions and cost inventory of power generation technologies in Singapore
Renewable and Sustainable Energy Reviews, 2007Co-Authors: R. Kannan, K. C. Leong, R. Osman, H. K. HoAbstract:Singapore is one of the most industrialised and urbanised economies in South-East Asia. Power supply is an important sub-system in its economy and heavily reliant on imported oil and natural gas. Due to its geographical area, clean/renewable energy sources for power generation are limited. At the same time, in its deregulated electricity market, the adoption of clean/renewable based power generation technology may be hindered by a market pricing mechanism that does not reflect externality costs. For a sustainable power supply, there is a need to change the conventional appraisal techniques. Life Cycle assessment (LCA) and life Cycle cost analysis (LCCA) are good tools to quantify environmental impacts and economic implications. LCA and LCCA are performed for centralised and distributed power generation technologies in Singapore, namely, oil and Orimulsion-fired steam turbines, natural gas-fired combined Cycle Plant, solar PV and fuel cell systems. A life Cycle energy, emission and cost inventory is established. The results are discussed from the perspectives of fuel security, environmental protection and cost effectiveness of future power generation strategies for Singapore. © 2006 Elsevier Ltd. All rights reserved.
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gas fired combined Cycle Plant in singapore energy use gwp and cost a life Cycle approach
Energy Conversion and Management, 2005Co-Authors: Ramachandran Kannan, K. C. Leong, Ramli Osman, H. K. HoAbstract:A life Cycle assessment was performed to quantify the non-renewable (fossil) energy use and global warming potential (GWP) in electricity generation from a typical gas fired combined Cycle power Plant in Singapore. The cost of electricity generation was estimated using a life Cycle cost analysis (LCCA) tool. The life Cycle assessment (LCA) of a 367.5 MW gas fired combined Cycle power Plant operating in Singapore revealed that hidden processes consume about 8% additional energy in addition to the fuel embedded energy, and the hidden GWP is about 18%. The natural gas consumed during the operational phase accounted for 82% of the life Cycle cost of electricity generation. An empirical relation between Plant efficiency and life Cycle energy use and GWP in addition to a scenario for electricity cost with varying gas prices and Plant efficiency have been established.
Maurizio Bevilacqua - One of the best experts on this subject based on the ideXlab platform.
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The analytic hierarchy process applied to maintenance strategy selection
Reliability Engineering & System Safety, 2000Co-Authors: Maurizio Bevilacqua, Marcello BragliaAbstract:This paper describes an application of the Analytic Hierarchy Process (AHP) for selecting the best maintenance strategy for an important Italian oil refinery (an Integrated Gasification and Combined Cycle Plant). Five possible alternatives are considered: preventive, predictive, condition-based, corrective and opportunistic maintenance. The best maintenance policy must be selected for each facility of the Plant (about 200 in total). The machines are clustered in three homogeneous groups after a criticality analysis based on internal procedures of the oil refinery. With AHP technique, several aspects, which characterise each of the above-mentioned maintenance strategies, are arranged in a hierarchic structure and evaluated using only a series of pairwise judgements. To improve the effectiveness of the methodology AHP is coupled with a sensitivity analysis.
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Analytic hierarchy process applied to maintenance strategy selection
Reliability Engineering and System Safety, 2000Co-Authors: Maurizio Bevilacqua, Marcello BragliaAbstract:This paper describes an application of the Analytic Hierarchy Process (AHP) for selecting the best maintenance strategy for an important Italian oil refinery (an Integrated Gasification and Combined Cycle Plant). Five possible alternatives are considered: preventive, predictive, condition-based, corrective and opportunistic maintenance. The best maintenance policy must be selected for each facility of the Plant (about 200 in total). The machines are clustered in three homogeneous groups after a criticality analysis based on internal procedures of the oil refinery. With AHP technique, several aspects, which characterize each of the above-mentioned maintenance strategies, are arranged in a hierarchic structure and evaluated using only a series of pairwise judgements. To improve the effectiveness of the methodology AHP is coupled with a sensitivity analysis.
K. C. Leong - One of the best experts on this subject based on the ideXlab platform.
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Life Cycle energy, emissions and cost inventory of power generation technologies in Singapore
Renewable and Sustainable Energy Reviews, 2007Co-Authors: R. Kannan, K. C. Leong, R. Osman, H. K. HoAbstract:Singapore is one of the most industrialised and urbanised economies in South-East Asia. Power supply is an important sub-system in its economy and heavily reliant on imported oil and natural gas. Due to its geographical area, clean/renewable energy sources for power generation are limited. At the same time, in its deregulated electricity market, the adoption of clean/renewable based power generation technology may be hindered by a market pricing mechanism that does not reflect externality costs. For a sustainable power supply, there is a need to change the conventional appraisal techniques. Life Cycle assessment (LCA) and life Cycle cost analysis (LCCA) are good tools to quantify environmental impacts and economic implications. LCA and LCCA are performed for centralised and distributed power generation technologies in Singapore, namely, oil and Orimulsion-fired steam turbines, natural gas-fired combined Cycle Plant, solar PV and fuel cell systems. A life Cycle energy, emission and cost inventory is established. The results are discussed from the perspectives of fuel security, environmental protection and cost effectiveness of future power generation strategies for Singapore. © 2006 Elsevier Ltd. All rights reserved.
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gas fired combined Cycle Plant in singapore energy use gwp and cost a life Cycle approach
Energy Conversion and Management, 2005Co-Authors: Ramachandran Kannan, K. C. Leong, Ramli Osman, H. K. HoAbstract:A life Cycle assessment was performed to quantify the non-renewable (fossil) energy use and global warming potential (GWP) in electricity generation from a typical gas fired combined Cycle power Plant in Singapore. The cost of electricity generation was estimated using a life Cycle cost analysis (LCCA) tool. The life Cycle assessment (LCA) of a 367.5 MW gas fired combined Cycle power Plant operating in Singapore revealed that hidden processes consume about 8% additional energy in addition to the fuel embedded energy, and the hidden GWP is about 18%. The natural gas consumed during the operational phase accounted for 82% of the life Cycle cost of electricity generation. An empirical relation between Plant efficiency and life Cycle energy use and GWP in addition to a scenario for electricity cost with varying gas prices and Plant efficiency have been established.
A Basile - One of the best experts on this subject based on the ideXlab platform.
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integrated gasification gas combined Cycle Plant with membrane reactors technological and economical analysis
Energy Conversion and Management, 2007Co-Authors: Mario Amelio, Pietropaolo Morrone, Fausto Gallucci, A BasileAbstract:In the present work, the capture and storage of carbon dioxide from the fossil fuel power Plant have been considered. The main objective was to analyze the thermodynamic performances and the technological aspects of two integrated gasification gas combined Cycle Plants (IGCC), as well as to give a forecast of the investment costs for the Plants and the resulting energy consumptions. The first Plant considered is an IGCC∗ Plant (integrated gasification gas combined Cycle Plant with traditional shift reactors) characterized by the traditional water gas shift reactors and a CO2 physical adsorption system followed by the power section. The second one is an IGCCM Plant (integrated gasification gas combined Cycle Plant with membrane reactor) where the coal thermal input is the same as the first one, but the traditional shift reactors and the physical adsorption unit are replaced by catalytic palladium membrane reactors (CMR). In the present work, a mono-dimensional computational model of the membrane reactor was proposed to simulate and evaluate the capability of the IGCCM Plant to capture carbon dioxide. The energetic performances, efficiency and net power of the IGCC∗ and IGCCM Plants were, thus, compared, assuming as standard a traditional IGCC Plant without carbon dioxide capture. The economical aspects of the three Plants were compared through an economical analysis. Since the IGCC∗ and IGCCM Plants have additional costs related to the capture and disposal of the carbon dioxide, a Carbon Tax (adopted in some countries like Sweden) proportional to the number of kilograms of carbon dioxide released in the environment was assumed. According to the economical analysis, the IGCCM Plant proved to be more convenient than the IGCC∗ one.
