The Experts below are selected from a list of 37494 Experts worldwide ranked by ideXlab platform
Anders Lyngfelt - One of the best experts on this subject based on the ideXlab platform.
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chemical looping combustion of solid fuels status of development
Applied Energy, 2014Co-Authors: Anders LyngfeltAbstract:Chemical-looping combustion (CLC) of solid fuels is a technology with the potential of reducing the costs and energy penalty dramatically for CO2 capture. The potential for low costs is based on the similarity to coal combustion in fluidized beds. However, this assumes reaching high performance with respect to fuel and gas conversion, or that inadequate performance can be readily mitigated by downstream options. There are uncertainties with respect to the performance that can be reached in large-scale units, as well as with the extra costs needed to compensate for inadequate performance. Performance will be dependent on both reactor design and oxygen carrier properties. The status of chemical-looping combustion of solid fuels is discussed with respect to performance and experiences from Pilot Operation.
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chemical looping combustion of solid fuels status of development
Applied Energy, 2014Co-Authors: Anders LyngfeltAbstract:Chemical-looping combustion (CLC) of solid fuels is a technology with the potential of reducing the costs and energy penalty dramatically for CO2 capture. The potential for low costs is based on the similarity to coal combustion in fluidized beds. However, this assumes reaching high performance with respect to fuel and gas conversion, or that inadequate performance can be readily mitigated by downstream options. There are uncertainties with respect to the performance that can be reached in large-scale units, as well as with the extra costs needed to compensate for inadequate performance. Performance will be dependent on both reactor design and oxygen carrier properties. The status of chemical-looping combustion of solid fuels is discussed with respect to performance and experiences from Pilot Operation. (C) 2013 Elsevier Ltd. All rights reserved.
Probir Kumar Bose - One of the best experts on this subject based on the ideXlab platform.
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effect of diesel ethanol ppme pongamia pinata methyl ester blends as Pilot fuel on cng dual fuel Operation of a ci engine a performance emission trade off study
Energy & Fuels, 2015Co-Authors: Abhishek Paul, Rajsekhar Panua, Probir Kumar BoseAbstract:The major portion of today’s natural gas dual-fuel engines use Pilot amounts of diesel as the igniter fuel. However, it is found that dual-fuel Operation of natural gas with Pilot diesel poses problems, such as reduced brake thermal efficiency and increased hydrocarbon emission. The present experimental work explores the potential of compressed natural gas (CNG) under dual-fuel Operation by utilizing two blends of diesel–ethanol–Pongamia pinata methyl ester (PPME) as Pilot fuel. The blends, namely, D45E15B40 (45% diesel, 15% ethanol, 40% PPME) and D30E20B50 (30% diesel, 20% ethanol, 50% PPME) are selected on the basis of biodiesel-assisted miscibility of ethanol in diesel. It is found from the study that the Pilot Operation of D45E15B40 blend increases the brake thermal efficiency by 43.5% and 26.4% at 80% and 100% load conditions with CNG injection for 23 000 μs, whereas D30E20B50 produces an increase of 51.7% and 46.5% under the same conditions in comparison with Pilot diesel Operation. The NOx emission...
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effect of compressed natural gas dual fuel Operation with diesel and pongamia pinnata methyl ester ppme as Pilot fuels on performance and emission characteristics of a ci compression ignition engine
Energy, 2014Co-Authors: Abhishek Paul, Rajsekhar Panua, Durbadal Debroy, Probir Kumar BoseAbstract:Abstract The experimental work presents a comparative study of performance and emission using Pongamia pinnata methyl ester (PPME) and Diesel as Pilot fuel in a CI (compression ignition) engine with compressed natural gas (CNG) as the primary fuel. The results show that PPME–CNG dual fuel Operation is more effective than Diesel–CNG dual fuel Operation in improving the performance and emission characteristics of the engine. CNG is found to share higher quantity of input energy with PPME Pilot Operation than Pilot Diesel Operation. Low amount of CNG injection also increases the brake thermal efficiency of the engine. PPME–CNG Operations with low amount of CNG injections are also more instrumental in reducing CO (carbon monoxide) emission and smoke opacity than Diesel–CNG Operations. NO x emission from the engine is found to increase a bit for PPME–CNG Operations in comparison to Diesel–CNG Operation. PPME–CNG Operation is also more effective in reducing hydrocarbon emission than Diesel–CNG Operations. The study also shows that CNG injected at 10° ATDC (after top dead center) for a duration of about 4500 μs with PPME as Pilot fuel can produce better performance and emission signatures than Diesel–CNG Operation. The tradeoff study also consolidates the fact that PPME–CNG dual fuel Operation is instrumental in resolving the high performance–low emission paradox.
Abhishek Paul - One of the best experts on this subject based on the ideXlab platform.
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effect of diesel ethanol ppme pongamia pinata methyl ester blends as Pilot fuel on cng dual fuel Operation of a ci engine a performance emission trade off study
Energy & Fuels, 2015Co-Authors: Abhishek Paul, Rajsekhar Panua, Probir Kumar BoseAbstract:The major portion of today’s natural gas dual-fuel engines use Pilot amounts of diesel as the igniter fuel. However, it is found that dual-fuel Operation of natural gas with Pilot diesel poses problems, such as reduced brake thermal efficiency and increased hydrocarbon emission. The present experimental work explores the potential of compressed natural gas (CNG) under dual-fuel Operation by utilizing two blends of diesel–ethanol–Pongamia pinata methyl ester (PPME) as Pilot fuel. The blends, namely, D45E15B40 (45% diesel, 15% ethanol, 40% PPME) and D30E20B50 (30% diesel, 20% ethanol, 50% PPME) are selected on the basis of biodiesel-assisted miscibility of ethanol in diesel. It is found from the study that the Pilot Operation of D45E15B40 blend increases the brake thermal efficiency by 43.5% and 26.4% at 80% and 100% load conditions with CNG injection for 23 000 μs, whereas D30E20B50 produces an increase of 51.7% and 46.5% under the same conditions in comparison with Pilot diesel Operation. The NOx emission...
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effect of compressed natural gas dual fuel Operation with diesel and pongamia pinnata methyl ester ppme as Pilot fuels on performance and emission characteristics of a ci compression ignition engine
Energy, 2014Co-Authors: Abhishek Paul, Rajsekhar Panua, Durbadal Debroy, Probir Kumar BoseAbstract:Abstract The experimental work presents a comparative study of performance and emission using Pongamia pinnata methyl ester (PPME) and Diesel as Pilot fuel in a CI (compression ignition) engine with compressed natural gas (CNG) as the primary fuel. The results show that PPME–CNG dual fuel Operation is more effective than Diesel–CNG dual fuel Operation in improving the performance and emission characteristics of the engine. CNG is found to share higher quantity of input energy with PPME Pilot Operation than Pilot Diesel Operation. Low amount of CNG injection also increases the brake thermal efficiency of the engine. PPME–CNG Operations with low amount of CNG injections are also more instrumental in reducing CO (carbon monoxide) emission and smoke opacity than Diesel–CNG Operations. NO x emission from the engine is found to increase a bit for PPME–CNG Operations in comparison to Diesel–CNG Operation. PPME–CNG Operation is also more effective in reducing hydrocarbon emission than Diesel–CNG Operations. The study also shows that CNG injected at 10° ATDC (after top dead center) for a duration of about 4500 μs with PPME as Pilot fuel can produce better performance and emission signatures than Diesel–CNG Operation. The tradeoff study also consolidates the fact that PPME–CNG dual fuel Operation is instrumental in resolving the high performance–low emission paradox.
Li Yang - One of the best experts on this subject based on the ideXlab platform.
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evolution of china s power dispatch principle and the new energy saving power dispatch policy
Energy Policy, 2010Co-Authors: Gao Ciwei, Li YangAbstract:With social economic reform in the past decades, the power industry of China is gradually evolving from a highly integrated one toward an electricity market, which can be characterized based on the transition of the power dispatch principle. To attract investment in the power generating industry, China introduced non-state-owned power plants to the original system of a highly vertically integrated power industry with annual power generation quota guarantees, which makes the traditional economic dispatch principle not applicable. The newly debuted energy saving power dispatch (ESPD) is an attempt to fully exploit the maximum energy savings and was implemented by an administrative code. Starting in August 2007, the Pilot Operation of the ESPD was implemented in five provinces, but after two years, it is still not widely applied all over the country. This paper details the transition of China's power dispatch principle with particular attention to its origin and content. Moreover, the factors that influence the ESPD's actual energy saving effect are discussed, as well as the sustainability of the policy.
Rajsekhar Panua - One of the best experts on this subject based on the ideXlab platform.
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effect of diesel ethanol ppme pongamia pinata methyl ester blends as Pilot fuel on cng dual fuel Operation of a ci engine a performance emission trade off study
Energy & Fuels, 2015Co-Authors: Abhishek Paul, Rajsekhar Panua, Probir Kumar BoseAbstract:The major portion of today’s natural gas dual-fuel engines use Pilot amounts of diesel as the igniter fuel. However, it is found that dual-fuel Operation of natural gas with Pilot diesel poses problems, such as reduced brake thermal efficiency and increased hydrocarbon emission. The present experimental work explores the potential of compressed natural gas (CNG) under dual-fuel Operation by utilizing two blends of diesel–ethanol–Pongamia pinata methyl ester (PPME) as Pilot fuel. The blends, namely, D45E15B40 (45% diesel, 15% ethanol, 40% PPME) and D30E20B50 (30% diesel, 20% ethanol, 50% PPME) are selected on the basis of biodiesel-assisted miscibility of ethanol in diesel. It is found from the study that the Pilot Operation of D45E15B40 blend increases the brake thermal efficiency by 43.5% and 26.4% at 80% and 100% load conditions with CNG injection for 23 000 μs, whereas D30E20B50 produces an increase of 51.7% and 46.5% under the same conditions in comparison with Pilot diesel Operation. The NOx emission...
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effect of compressed natural gas dual fuel Operation with diesel and pongamia pinnata methyl ester ppme as Pilot fuels on performance and emission characteristics of a ci compression ignition engine
Energy, 2014Co-Authors: Abhishek Paul, Rajsekhar Panua, Durbadal Debroy, Probir Kumar BoseAbstract:Abstract The experimental work presents a comparative study of performance and emission using Pongamia pinnata methyl ester (PPME) and Diesel as Pilot fuel in a CI (compression ignition) engine with compressed natural gas (CNG) as the primary fuel. The results show that PPME–CNG dual fuel Operation is more effective than Diesel–CNG dual fuel Operation in improving the performance and emission characteristics of the engine. CNG is found to share higher quantity of input energy with PPME Pilot Operation than Pilot Diesel Operation. Low amount of CNG injection also increases the brake thermal efficiency of the engine. PPME–CNG Operations with low amount of CNG injections are also more instrumental in reducing CO (carbon monoxide) emission and smoke opacity than Diesel–CNG Operations. NO x emission from the engine is found to increase a bit for PPME–CNG Operations in comparison to Diesel–CNG Operation. PPME–CNG Operation is also more effective in reducing hydrocarbon emission than Diesel–CNG Operations. The study also shows that CNG injected at 10° ATDC (after top dead center) for a duration of about 4500 μs with PPME as Pilot fuel can produce better performance and emission signatures than Diesel–CNG Operation. The tradeoff study also consolidates the fact that PPME–CNG dual fuel Operation is instrumental in resolving the high performance–low emission paradox.