The Experts below are selected from a list of 11259 Experts worldwide ranked by ideXlab platform
Florian Buchter - One of the best experts on this subject based on the ideXlab platform.
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conceptual design of a thermo electrical energy storage system Based on heat integration of thermodynamic cycles part a methodology and Base Case
Energy, 2012Co-Authors: Matteo Morandin, Francois Marechal, Mehmet Mercangoz, Florian BuchterAbstract:The interest in large scale electricity storage (ES) with discharging time longer than 1 h and nominal power greater than 1 MW, is increasing worldwide as the increasing share of renewable energy, typically solar and wind energy, imposes severe load management issues. Thermo-electrical energy storage (TEES) Based on thermodynamic cycles is currently under investigation at ABB corporate research as an alternative solution to pump hydro and compressed air energy storage. TEES is Based on the conversion of electricity into thermal energy during charge by means of a heat pump and on the conversion of thermal energy into electricity during discharge by means of a thermal engine. The synthesis and the thermodynamic optimization of a TEES system Based on hot water, ice storage and transcritical CO2 cycles, is discussed in two papers. In this first paper a methodology for the conceptual design of a TEES system Based on the analysis of the thermal integration between charging and discharging cycles through Pinch Analysis tools is introduced. According to such methodology, the heat exchanger network and temperatures and volumes of storage tanks are not defined a priori but are determined after the cycle parameters are optimized. For this purpose a heuristic procedure Based on the interpretation of the composite curves obtained by optimizing the thermal integration between the cycles was developed. Such heuristic rules were implemented in a code that allows finding automatically the complete system design for given values of the intensive parameters of the charging and discharging cycles only. A Base Case system Configuration is introduced and the results of its thermodynamic optimization are discussed here. A maximum roundtrip efficiency of 60% was obtained for the Base Case Configuration assuming turbomachinery and heat exchanger performances in line with indications from manufacturers.
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conceptual design of a thermo electrical energy storage system Based on heat integration of thermodynamic cycles part b alternative system Configurations
Energy, 2012Co-Authors: Matteo Morandin, Francois Marechal, Mehmet Mercangoz, Florian BuchterAbstract:Thermo-electrical energy storage (TEES) Based on thermodynamic cycles is currently under investigation at ABB corporate research as an alternative solution to more consolidated but site-dependent electricity storage technologies such as pump-hydro or compressed air energy storage. During charge electricity is converted into thermal energy by means of a heat pump and during discharge a thermal engine converts thermal energy into electricity. The synthesis and the thermodynamic optimization of a TEES system Based on hot water, ice storage and on transcritical CO2 cycles is discussed in two papers (part A and part B). A methodology for the conceptual design of a TEES system Based on Pinch Analysis tools was introduced in part A together with the results of a thermodynamic optimization of a Base Case. The overall synthesis problem was solved by implementing in the optimization a heuristic procedure for the synthesis of the heat exchanger network and the storage tanks thus letting the optimal complete system structure and its design parameters to be found for given values of cycle parameters. In part A, basic topologies for the CO2 heat pump (HP) and thermal engine (TE) were considered, and no alternative cycle Configurations were investigated through the optimization. A larger synthesis problem involving the change of cycle topologies is addressed in this second paper. Different system Configurations were generated by modifying the Base Case Configuration through an organized procedure and were optimized separately following the objective of maximum roundtrip efficiency only, as done for the Base Case in part A. The optimization results of the new Configurations are discussed and compared with the Base Case scenario. A complete picture of the impact of design choices on the maximum system performances is obtained.
Matteo Morandin - One of the best experts on this subject based on the ideXlab platform.
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conceptual design of a thermo electrical energy storage system Based on heat integration of thermodynamic cycles part a methodology and Base Case
Energy, 2012Co-Authors: Matteo Morandin, Francois Marechal, Mehmet Mercangoz, Florian BuchterAbstract:The interest in large scale electricity storage (ES) with discharging time longer than 1 h and nominal power greater than 1 MW, is increasing worldwide as the increasing share of renewable energy, typically solar and wind energy, imposes severe load management issues. Thermo-electrical energy storage (TEES) Based on thermodynamic cycles is currently under investigation at ABB corporate research as an alternative solution to pump hydro and compressed air energy storage. TEES is Based on the conversion of electricity into thermal energy during charge by means of a heat pump and on the conversion of thermal energy into electricity during discharge by means of a thermal engine. The synthesis and the thermodynamic optimization of a TEES system Based on hot water, ice storage and transcritical CO2 cycles, is discussed in two papers. In this first paper a methodology for the conceptual design of a TEES system Based on the analysis of the thermal integration between charging and discharging cycles through Pinch Analysis tools is introduced. According to such methodology, the heat exchanger network and temperatures and volumes of storage tanks are not defined a priori but are determined after the cycle parameters are optimized. For this purpose a heuristic procedure Based on the interpretation of the composite curves obtained by optimizing the thermal integration between the cycles was developed. Such heuristic rules were implemented in a code that allows finding automatically the complete system design for given values of the intensive parameters of the charging and discharging cycles only. A Base Case system Configuration is introduced and the results of its thermodynamic optimization are discussed here. A maximum roundtrip efficiency of 60% was obtained for the Base Case Configuration assuming turbomachinery and heat exchanger performances in line with indications from manufacturers.
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conceptual design of a thermo electrical energy storage system Based on heat integration of thermodynamic cycles part b alternative system Configurations
Energy, 2012Co-Authors: Matteo Morandin, Francois Marechal, Mehmet Mercangoz, Florian BuchterAbstract:Thermo-electrical energy storage (TEES) Based on thermodynamic cycles is currently under investigation at ABB corporate research as an alternative solution to more consolidated but site-dependent electricity storage technologies such as pump-hydro or compressed air energy storage. During charge electricity is converted into thermal energy by means of a heat pump and during discharge a thermal engine converts thermal energy into electricity. The synthesis and the thermodynamic optimization of a TEES system Based on hot water, ice storage and on transcritical CO2 cycles is discussed in two papers (part A and part B). A methodology for the conceptual design of a TEES system Based on Pinch Analysis tools was introduced in part A together with the results of a thermodynamic optimization of a Base Case. The overall synthesis problem was solved by implementing in the optimization a heuristic procedure for the synthesis of the heat exchanger network and the storage tanks thus letting the optimal complete system structure and its design parameters to be found for given values of cycle parameters. In part A, basic topologies for the CO2 heat pump (HP) and thermal engine (TE) were considered, and no alternative cycle Configurations were investigated through the optimization. A larger synthesis problem involving the change of cycle topologies is addressed in this second paper. Different system Configurations were generated by modifying the Base Case Configuration through an organized procedure and were optimized separately following the objective of maximum roundtrip efficiency only, as done for the Base Case in part A. The optimization results of the new Configurations are discussed and compared with the Base Case scenario. A complete picture of the impact of design choices on the maximum system performances is obtained.
Jose Palomar - One of the best experts on this subject based on the ideXlab platform.
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aspen plus supported conceptual design of the aromatic aliphatic separation from low aromatic content naphtha using 4 methyl n butylpyridinium tetrafluoroborate ionic liquid
Fuel Processing Technology, 2016Co-Authors: J De Riva, Victor R Ferro, Daniel Moreno, Ismael Diaz, Jose PalomarAbstract:Abstract Three different processes to separate aromatic hydrocarbons from a very low-aromatic-content (10 wt.%) naphtha with the 4-methyl-N-butylpyridinium tetrafluoroborate ionic liquid are analyzed. A computer-aid methodology recently developed in our group that integrates the molecular modeling and the process simulation via COSMO-Based thermodynamic models in Aspen Plus is used. The most commonly drawn process scheme is proposed as Base Case Configuration and two alternative Configurations, one adding water as a co-solvent (Configuration 1) and the other including a stripper between the extraction and the solvent regeneration (Configuration 2), are studied. The processes performance is evaluated through the aliphatic and aromatic product purities and recoveries, and the solvent and energy consumptions. The results show that the separation of aromatic hydrocarbons from this type of naphtha using ionic liquids is possible. The Base Case Configuration is not able to achieve the separation successfully. The addition of water as co-solvent guaranties this demand but increases the solvent and energy consumption. The intermediate stripper seems to be a promising alternative as it allows achieving high purity aliphatic and aromatic products without increasing the solvent or energy needs. The results demonstrate that the computational strategy used is capable to discriminate among complex and relatively similar process alternatives.
Mehmet Mercangoz - One of the best experts on this subject based on the ideXlab platform.
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conceptual design of a thermo electrical energy storage system Based on heat integration of thermodynamic cycles part a methodology and Base Case
Energy, 2012Co-Authors: Matteo Morandin, Francois Marechal, Mehmet Mercangoz, Florian BuchterAbstract:The interest in large scale electricity storage (ES) with discharging time longer than 1 h and nominal power greater than 1 MW, is increasing worldwide as the increasing share of renewable energy, typically solar and wind energy, imposes severe load management issues. Thermo-electrical energy storage (TEES) Based on thermodynamic cycles is currently under investigation at ABB corporate research as an alternative solution to pump hydro and compressed air energy storage. TEES is Based on the conversion of electricity into thermal energy during charge by means of a heat pump and on the conversion of thermal energy into electricity during discharge by means of a thermal engine. The synthesis and the thermodynamic optimization of a TEES system Based on hot water, ice storage and transcritical CO2 cycles, is discussed in two papers. In this first paper a methodology for the conceptual design of a TEES system Based on the analysis of the thermal integration between charging and discharging cycles through Pinch Analysis tools is introduced. According to such methodology, the heat exchanger network and temperatures and volumes of storage tanks are not defined a priori but are determined after the cycle parameters are optimized. For this purpose a heuristic procedure Based on the interpretation of the composite curves obtained by optimizing the thermal integration between the cycles was developed. Such heuristic rules were implemented in a code that allows finding automatically the complete system design for given values of the intensive parameters of the charging and discharging cycles only. A Base Case system Configuration is introduced and the results of its thermodynamic optimization are discussed here. A maximum roundtrip efficiency of 60% was obtained for the Base Case Configuration assuming turbomachinery and heat exchanger performances in line with indications from manufacturers.
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conceptual design of a thermo electrical energy storage system Based on heat integration of thermodynamic cycles part b alternative system Configurations
Energy, 2012Co-Authors: Matteo Morandin, Francois Marechal, Mehmet Mercangoz, Florian BuchterAbstract:Thermo-electrical energy storage (TEES) Based on thermodynamic cycles is currently under investigation at ABB corporate research as an alternative solution to more consolidated but site-dependent electricity storage technologies such as pump-hydro or compressed air energy storage. During charge electricity is converted into thermal energy by means of a heat pump and during discharge a thermal engine converts thermal energy into electricity. The synthesis and the thermodynamic optimization of a TEES system Based on hot water, ice storage and on transcritical CO2 cycles is discussed in two papers (part A and part B). A methodology for the conceptual design of a TEES system Based on Pinch Analysis tools was introduced in part A together with the results of a thermodynamic optimization of a Base Case. The overall synthesis problem was solved by implementing in the optimization a heuristic procedure for the synthesis of the heat exchanger network and the storage tanks thus letting the optimal complete system structure and its design parameters to be found for given values of cycle parameters. In part A, basic topologies for the CO2 heat pump (HP) and thermal engine (TE) were considered, and no alternative cycle Configurations were investigated through the optimization. A larger synthesis problem involving the change of cycle topologies is addressed in this second paper. Different system Configurations were generated by modifying the Base Case Configuration through an organized procedure and were optimized separately following the objective of maximum roundtrip efficiency only, as done for the Base Case in part A. The optimization results of the new Configurations are discussed and compared with the Base Case scenario. A complete picture of the impact of design choices on the maximum system performances is obtained.
Francois Marechal - One of the best experts on this subject based on the ideXlab platform.
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conceptual design of a thermo electrical energy storage system Based on heat integration of thermodynamic cycles part a methodology and Base Case
Energy, 2012Co-Authors: Matteo Morandin, Francois Marechal, Mehmet Mercangoz, Florian BuchterAbstract:The interest in large scale electricity storage (ES) with discharging time longer than 1 h and nominal power greater than 1 MW, is increasing worldwide as the increasing share of renewable energy, typically solar and wind energy, imposes severe load management issues. Thermo-electrical energy storage (TEES) Based on thermodynamic cycles is currently under investigation at ABB corporate research as an alternative solution to pump hydro and compressed air energy storage. TEES is Based on the conversion of electricity into thermal energy during charge by means of a heat pump and on the conversion of thermal energy into electricity during discharge by means of a thermal engine. The synthesis and the thermodynamic optimization of a TEES system Based on hot water, ice storage and transcritical CO2 cycles, is discussed in two papers. In this first paper a methodology for the conceptual design of a TEES system Based on the analysis of the thermal integration between charging and discharging cycles through Pinch Analysis tools is introduced. According to such methodology, the heat exchanger network and temperatures and volumes of storage tanks are not defined a priori but are determined after the cycle parameters are optimized. For this purpose a heuristic procedure Based on the interpretation of the composite curves obtained by optimizing the thermal integration between the cycles was developed. Such heuristic rules were implemented in a code that allows finding automatically the complete system design for given values of the intensive parameters of the charging and discharging cycles only. A Base Case system Configuration is introduced and the results of its thermodynamic optimization are discussed here. A maximum roundtrip efficiency of 60% was obtained for the Base Case Configuration assuming turbomachinery and heat exchanger performances in line with indications from manufacturers.
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conceptual design of a thermo electrical energy storage system Based on heat integration of thermodynamic cycles part b alternative system Configurations
Energy, 2012Co-Authors: Matteo Morandin, Francois Marechal, Mehmet Mercangoz, Florian BuchterAbstract:Thermo-electrical energy storage (TEES) Based on thermodynamic cycles is currently under investigation at ABB corporate research as an alternative solution to more consolidated but site-dependent electricity storage technologies such as pump-hydro or compressed air energy storage. During charge electricity is converted into thermal energy by means of a heat pump and during discharge a thermal engine converts thermal energy into electricity. The synthesis and the thermodynamic optimization of a TEES system Based on hot water, ice storage and on transcritical CO2 cycles is discussed in two papers (part A and part B). A methodology for the conceptual design of a TEES system Based on Pinch Analysis tools was introduced in part A together with the results of a thermodynamic optimization of a Base Case. The overall synthesis problem was solved by implementing in the optimization a heuristic procedure for the synthesis of the heat exchanger network and the storage tanks thus letting the optimal complete system structure and its design parameters to be found for given values of cycle parameters. In part A, basic topologies for the CO2 heat pump (HP) and thermal engine (TE) were considered, and no alternative cycle Configurations were investigated through the optimization. A larger synthesis problem involving the change of cycle topologies is addressed in this second paper. Different system Configurations were generated by modifying the Base Case Configuration through an organized procedure and were optimized separately following the objective of maximum roundtrip efficiency only, as done for the Base Case in part A. The optimization results of the new Configurations are discussed and compared with the Base Case scenario. A complete picture of the impact of design choices on the maximum system performances is obtained.
