The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Rahul R. Bhosale - One of the best experts on this subject based on the ideXlab platform.
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Estimation of solar‐to‐Fuel Energy conversion efficiency of a solar driven samarium oxide‐based thermochemical CO2 splitting cycle
Greenhouse Gases: Science and Technology, 2020Co-Authors: Rahul R. BhosaleAbstract:Estimation of the solar‐to‐Fuel Energy conversion efficiency (with and without heat recuperation) of the Sm2O3/SmO‐based solar‐driven thermochemical CO2 splitting cycle is reported. HSC Chemistry 9.9 software and its thermodynamic database were utilized for the thermodynamic analysis. The temperatures required for the partial thermal reduction (TR) of Sm2O3 and the reoxidation of SmO via CO2 splitting (CS) reaction were identified. The thermodynamic modeling equations and the process flow configuration for the Sm2O3/SmO‐based CO2 splitting (Sm‐CS) cycle were formulated. The obtained results indicate that a higher quantity of solar Energy input was needed to increase the percentage of partial TR of Sm2O3. The solar‐to‐Fuel Energy conversion efficiency (without heat recuperation) was first increased up to 9.13% for 50% of TR‐Sm and then decreased to 6.54% as the %TR‐Sm further enhanced to 100%. The application of heat recuperation was beneficial not only to increase the solar‐to‐Fuel Energy conversion efficiency but also to decrease the TR temperature required for the attainment of the maximum efficiency value. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd.
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Solar hydrogen production via thermochemical magnesium oxide – Magnesium sulfate water splitting cycle
Fuel, 2020Co-Authors: Rahul R. BhosaleAbstract:Abstract This investigation reports the thermodynamic scrutiny of the MgO/MgSO4 water-splitting cycle. At the initial stage, the thermal reduction temperature required for the commencement of the thermal dissociation of MgSO4 (in the absence of inert Ar) and the maximum temperature below which the water-splitting reaction is feasible is identified by performing thermodynamic equilibrium calculations. The influence of inert Ar as the carrier gas on the thermal reduction temperature is also explored. After identifying the required operating temperatures, the second law efficiency analysis predicts the process parameters of this cycle. Overall analysis confirms that although the rise in the molar flow rate of Ar from 1 to 50 mol/s results in a decrease in the thermal reduction temperature from 1490 K to 1282 K, the solar-to-Fuel Energy conversion efficiency is adversely affected and reduces from 47.7% to 18.1%. As per the analysis, this cycle achieved the highest solar-to-Fuel Energy conversion efficiency (47.7%) at the molar flow rate of Ar = 1 mol/s, thermal reduction temperature = 1490 K, and water splitting temperature = 475 K. Further increment in the solar-to-Fuel Energy conversion efficiency up to 62.5% is possible if 50% of the heat recuperation is applied.
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Thermodynamic study of the effect of partial thermal reduction of dysprosium oxide on solar-to-Fuel Energy conversion efficiency
Fuel, 2020Co-Authors: Rahul R. BhosaleAbstract:Abstract A thermodynamic equilibrium and efficiency analysis of the dysprosium oxide-based solar thermochemical H2O splitting (Dy-WS) cycle is conducted. The objective of this study is to understand the effect of partial thermal reduction (TR) of Dy2O3 on the solar-to-Fuel Energy conversion efficiency ( η solar - t o - f u e l - D y - W S ) of the Dy-WS cycle. The equilibrium analysis indicate a rise in the percentage TR of Dy2O3 (%TR-Dy) from 0.3% up to 100% when the TR temperature ( T H ) is increased from 2000 K to 2530 K. The upsurge in the T H yielded a considerable surge in the Q solar - r e a c t o r - D y - W S and Q solar - h e a t e r - D y - W S . Overall results of this study showed that the η solar - t o - f u e l - D y - W S is amplified from 0.6% to 6.5% in three zones (slow zone, medium-fast zone, and fast zone) as the T H is amplified from 2000 K up to 2280 K. A further rise in the T H from 2280 K up to 2530 K resulted in a drop in the η solar - t o - f u e l - D y - W S from 6.5% to 3.5%. By employing the heat recuperation, the η solar - t o - f u e l - H R - D y - W S is improved further up to 11.4% (at T H = 2280 K).
Ricardo Martins - One of the best experts on this subject based on the ideXlab platform.
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2MBio, a novel tool to encourage creative participatory conceptual design of bioEnergy systems – The case of wood Fuel Energy systems in south Mozambique
Journal of Cleaner Production, 2018Co-Authors: Ricardo Martins, Judith A. Cherni, Nuno VideiraAbstract:Abstract This paper proposes a new conceptual design tool for bioEnergy systems, the 2MBio, and its implementation on the case of wood Fuel Energy systems (WES) in South Mozambique. Dependence on wood Fuel characterises most Sub-Saharan countries and WES are complex socio-ecological systems dynamically linked to crucial development issues, e.g., deforestation and poverty. In Mozambique WES supply over 70% of the national Energy needs through an informal business network worth around one million euros each year. In contrast with the 2MBio, currently available tools often aim at supporting decision-making on WES with off-the-shelf expert solutions and optimisation of WES efficiency, supply chains and resource management. While relevant and useful, such approaches are frequently unsuitable to engage the knowledge and creativity of a wide range of crucial actors. The 2MBio addresses this gap providing a simple, visual platform on paper that supports from illiterate to professional users, to stimulate creative ideas and apply current knowledge while designing their own WES. The results of implementation in real settings in South Mozambique produced relevant design breakthroughs. Compared with the absence of any other support tool, and faced with same design challenges, the 2MBio participatory design workshops in south Mozambique resulted in comprehensive analysis of wood Fuel Energy systems, and innovative integrated WES solutions design. The proposed approach raised participants’ awareness about opportunities and constrains linked to their WES while also facilitating information sharing new learning dynamics and enhance creativity.
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Burning Assets? Designing Wood Fuel Energy Strategies in Mozambique: 2MBio a Novel Participatory Model to Promote Creativity and Knowledge as Strategic Assets
Optimum Decision Making in Asset Management, 2017Co-Authors: Ricardo MartinsAbstract:Getting wood for cooking, heating, processing into charcoal and/or selling is a fundamental part of most household survival strategies in Developing Countries. Entangling in complex and dynamic ways local and global ecosystems, poverty, technology and business Wood Fuel Energy Systems (WES) are fundamental and require simple to use design tools to support the strategic and optimised used of available socio-ecological resources/assets. However, there are very few tools able to support relevant actors (e.g. charcoal makers, experts, policy makers) in that task. To bridge that gap the 2MBio, a participatory conceptual design tool to support the strategic design of WES, is introduced and its practical results in Mozambique presented. The 2MBio explicit in a simple and intuitive layout the set of necessary and sufficient resources/assets required to produce comprehensive and meaningful WES designs/strategies, which represent in themselves a strategic asset, while further stimulates knowledge and creativity as a tacit asset.
Nuno Videira - One of the best experts on this subject based on the ideXlab platform.
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2MBio, a novel tool to encourage creative participatory conceptual design of bioEnergy systems – The case of wood Fuel Energy systems in south Mozambique
Journal of Cleaner Production, 2018Co-Authors: Ricardo Martins, Judith A. Cherni, Nuno VideiraAbstract:Abstract This paper proposes a new conceptual design tool for bioEnergy systems, the 2MBio, and its implementation on the case of wood Fuel Energy systems (WES) in South Mozambique. Dependence on wood Fuel characterises most Sub-Saharan countries and WES are complex socio-ecological systems dynamically linked to crucial development issues, e.g., deforestation and poverty. In Mozambique WES supply over 70% of the national Energy needs through an informal business network worth around one million euros each year. In contrast with the 2MBio, currently available tools often aim at supporting decision-making on WES with off-the-shelf expert solutions and optimisation of WES efficiency, supply chains and resource management. While relevant and useful, such approaches are frequently unsuitable to engage the knowledge and creativity of a wide range of crucial actors. The 2MBio addresses this gap providing a simple, visual platform on paper that supports from illiterate to professional users, to stimulate creative ideas and apply current knowledge while designing their own WES. The results of implementation in real settings in South Mozambique produced relevant design breakthroughs. Compared with the absence of any other support tool, and faced with same design challenges, the 2MBio participatory design workshops in south Mozambique resulted in comprehensive analysis of wood Fuel Energy systems, and innovative integrated WES solutions design. The proposed approach raised participants’ awareness about opportunities and constrains linked to their WES while also facilitating information sharing new learning dynamics and enhance creativity.
Patrick Trent Greiner - One of the best experts on this subject based on the ideXlab platform.
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Renewable Energy injustice: The socio-environmental implications of renewable Energy consumption
Energy Research & Social Science, 2019Co-Authors: Julius Alexander Mcgee, Patrick Trent GreinerAbstract:Abstract We explore how national income inequality moderates the relationship between renewable Energy consumption and CO 2 emissions per capita for a sample of 175 nations from 1990 to 2014. We find that, independent of income inequality and other drivers of emissions, increases in renewable Energy consumption reduce emissions. However, when national income inequality is considered, we find that as inequality increases renewable Energy consumption is associated with a much larger decrease in emissions. We also find that when fossil Fuel Energy is controlled for, inequality does not significantly moderate the association between renewable Energy and emissions. These results suggest that fossil Fuel consumption is the main vector through which inequality moderates the relationship between renewable Energy and emissions. Drawing on previous work from Energy poverty scholars, we theorize that national inequality influences the way renewables are deployed. Specifically, our findings suggest that renewable Energy displaces more fossil Fuel Energy sources when inequality is increasing, while– conversely– fewer existing fossil Fuel Energy sources are displaced when inequality is decreasing. In additional analyses, we find that as the top 20 percent of income earners’ share of income grows, the association between renewable Energy consumption and emissions decreases in magnitude. We conclude by arguing that efforts aimed at increasing renewable Energy consumption should adopt policies that ensure the effective displacement of fossil Fuels and reduce inequality.
C. S. Kim - One of the best experts on this subject based on the ideXlab platform.
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The Relative Impacts of U.S. Bio-Fuel Policies on Fuel-Energy Markets: A Comparative Static Analysis
2015Co-Authors: C. S. Kim, Glenn Schaible, Stan Daberkow, Senior EconomistAbstract:Rapidly declining gasoline prices from their record high during the summer of 2008, while ethanol prices remained relatively high, made it difficult for many bio-Fuel policy modelers to fully explain the impacts of U.S. bio-Fuel policies on Fuel prices. Using profit-maximization models for blenders, refiners, and distillers, we conduct a comparative static analysis to measure the relative magnitudes of the impacts of tax credits and blending mandates on Fuel-Energy market equilibrium prices. Our results indicate that first, the prices of all Fuels including conventional gasoline, ethanol, and blended gasoline decline as the bio-Fuel tax credit increases, but they increase as the rate of the blending mandate increases. Second, the shadow value of a blending mandate represents the marginal rate of substitution between the marginal price change associated with a blending mandate and the marginal price change associated with a bio-Fuel tax credit. Therefore, bio-Fuel policies can affect the prices of all Fuels including conventional gasoline, ethanol, and blended gasoline. Finally, ethanol imports are affected by domestic blender’s market-power effects, more than by the import duty imposed to offset the tax credit associated with the use of imported ethanol in the blending process. Key Words: bio-Fuel tax credits, blended gasoline, blender’s market power, mandated blending, tarif
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The Relative Impacts of U.S. Bio-Fuel Policies on Fuel-Energy Markets: A Comparative Static Analysis
Journal of Agricultural and Applied Economics, 2010Co-Authors: C. S. Kim, Glenn D. Schaible, Stan DaberkowAbstract:Rapidly declining gasoline prices from their record high during the summer of 2008, while ethanol prices remained relatively high, made it difficult for many bio-Fuel policy modelers to fully explain the impacts of U.S. bio-Fuel policies on Fuel prices. Using profitmaximization models for blenders, refiners, and distillers, we conduct a comparative static analysis to measure the relative magnitudes of the impacts of tax credits and blending mandates on Fuel-Energy market equilibrium prices. Our results indicate that first, the prices of all Fuels including conventional gasoline, ethanol, and blended gasoline decline as the bioFuel tax credit increases, but they increase as the rate of the blending mandate increases. Second, the shadow value of a blending mandate represents the marginal rate of substitution between the marginal price change associated with a blending mandate and the marginal price change associated with a bio-Fuel tax credit. Therefore, bio-Fuel policies can affect the prices of all Fuels including conventional gasoline, ethanol, and blended gasoline. Finally, ethanol imports are affected by domestic blender’s market-power effects, more than by the import duty imposed to offset the tax credit associated with the use of imported ethanol in the blending process.
