The Experts below are selected from a list of 353370 Experts worldwide ranked by ideXlab platform
Olivier Marc - One of the best experts on this subject based on the ideXlab platform.
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Dynamic Modeling and experimental validation elements of a 30 kw libr h2o single effect absorption chiller for solar application
Applied Thermal Engineering, 2015Co-Authors: Olivier Marc, Franck Lucas, Frantz Sinama, Jean-philippe Praene, Jean CastainglasvignottesAbstract:Abstract This paper presents a Dynamic Modeling of a single-effect absorption chiller working with LiBr–H2O solution used in a solar cooling installation operating without any backup systems (hot or cold). In this case, the absorption machine is powered only by a solar collector field. Given the highly variable nature of solar radiation and the building loads, the range of the three source temperatures of the chiller can vary widely since there is no backup system. These fluctuating source temperatures mean that the chiller does not operate in steady state phase during the day. The Dynamic Modeling of the absorption chiller is therefore very important to predict its performance, taking into account both the transient and steady state phases. The numerical model presented in this paper is based on the mass and energy balances of each component, equations of state and equations of heat transfers. In the first part, this article presents the Dynamic Modeling of a LiBr/H2O absorption chiller. Then, experimental validation elements are proposed to validate pressures and temperatures of the chiller. Finally, a method is presented to optimize the thermal COP according to different levels of refrigerating capacities.
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Dynamic Modeling and experimental validation elements of a 30 kW LiBr/H2O single effect absorption chiller for solar application
Applied Thermal Engineering, 2015Co-Authors: Olivier Marc, Franck Lucas, Frantz Sinama, Jean-philippe Praene, Jean Castaing-lasvignottesAbstract:This paper presents a Dynamic Modeling of a single-effect absorption chiller working with LiBreH2O solution used in a solar cooling installation operating without any backup systems (hot or cold). In this case, the absorption machine is powered only by a solar collector field. Given the highly variable nature of solar radiation and the building loads, the range of the three source temperatures of the chiller can vary widely since there is no backup system. These fluctuating source temperatures mean that the chiller does not operate in steady state phase during the day. The Dynamic Modeling of the absorption chiller is therefore very important to predict its performance, taking into account both the transient and steady state phases. The numerical model presented in this paper is based on the mass and energy balances of each component, equations of state and equations of heat transfers. In the first part, this article presents the Dynamic Modeling of a LiBr/H2O absorption chiller. Then, experimental validation elements are proposed to validate pressures and temperatures of the chiller. Finally, a method is presented to optimize the thermal COP according to different levels of refrigerating capacities.
Monjur Murshed - One of the best experts on this subject based on the ideXlab platform.
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solid oxide fuel cell perspective of Dynamic Modeling and control
Journal of Process Control, 2011Co-Authors: Biao Huang, Monjur MurshedAbstract:Abstract This paper presents a review of state-of-the-art solid oxide fuel cell (SOFC), from perspective of Dynamic Modeling and model-based control. First, the historical and current status of SOFC development is overviewed. Then the main components of the SOFC along with their governing transport equations are discussed. These two sections provide fundamentals for understanding the SOFC. Following the sequence from power generation to energy losses within the SOFC, the section of Dynamic Modeling starts from an overview of energy generation, followed by discussion of energy losses and analysis of Dynamics that affect energy generation and losses. This section of Dynamic Modeling is concluded by considering the model validation problem and other related challenging issues from the Modeling perspective. Once SOFC Dynamics are understood, the paper continues its journey to the SOFC control problem. This section starts from a general description of control problems in SOFC, continued with an overview of the existing control strategies and followed by a sample nonlinear MPC solution. The section is concluded by discussion of some of the challenges in SOFC control.
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solid oxide fuel cell perspective of Dynamic Modeling and control
IFAC Proceedings Volumes, 2010Co-Authors: Biao Huang, Monjur MurshedAbstract:Abstract This paper presents a review of state-of-the-art solid oxide fuel cells (SOFC), from perspective of Dynamic Modeling and model-based control. First, the current status of SOFC development is provided. Then the main components of the SOFC along with their governing transport equations are discussed. These two sections provide basic introduction to the SOFC. Following the sequence of power generation and energy losses mechanism of SOFC, the section of Dynamic Modeling is started from overview of energy generation, followed by discussion of energy losses, and concluded by analyzing the Dynamics that affect energy generation and losses. The section of Dynamic Modeling is closed by considering the model validation problem and other related problems in the Modeling aspect. Once Dynamic models are available, the paper continues its journey to the SOFC control problems. It is started from a general description of the control problems in SOFC, continued with an overview of the existing control strategies, and followed by a sample nonlinear MPC solution. This section is concluded by discussion of some of the challenges in SOFC control problems.
Jean Castaing-lasvignottes - One of the best experts on this subject based on the ideXlab platform.
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Dynamic Modeling and experimental validation elements of a 30 kW LiBr/H2O single effect absorption chiller for solar application
Applied Thermal Engineering, 2015Co-Authors: Olivier Marc, Franck Lucas, Frantz Sinama, Jean-philippe Praene, Jean Castaing-lasvignottesAbstract:This paper presents a Dynamic Modeling of a single-effect absorption chiller working with LiBreH2O solution used in a solar cooling installation operating without any backup systems (hot or cold). In this case, the absorption machine is powered only by a solar collector field. Given the highly variable nature of solar radiation and the building loads, the range of the three source temperatures of the chiller can vary widely since there is no backup system. These fluctuating source temperatures mean that the chiller does not operate in steady state phase during the day. The Dynamic Modeling of the absorption chiller is therefore very important to predict its performance, taking into account both the transient and steady state phases. The numerical model presented in this paper is based on the mass and energy balances of each component, equations of state and equations of heat transfers. In the first part, this article presents the Dynamic Modeling of a LiBr/H2O absorption chiller. Then, experimental validation elements are proposed to validate pressures and temperatures of the chiller. Finally, a method is presented to optimize the thermal COP according to different levels of refrigerating capacities.
Jean Castainglasvignottes - One of the best experts on this subject based on the ideXlab platform.
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Dynamic Modeling and experimental validation elements of a 30 kw libr h2o single effect absorption chiller for solar application
Applied Thermal Engineering, 2015Co-Authors: Olivier Marc, Franck Lucas, Frantz Sinama, Jean-philippe Praene, Jean CastainglasvignottesAbstract:Abstract This paper presents a Dynamic Modeling of a single-effect absorption chiller working with LiBr–H2O solution used in a solar cooling installation operating without any backup systems (hot or cold). In this case, the absorption machine is powered only by a solar collector field. Given the highly variable nature of solar radiation and the building loads, the range of the three source temperatures of the chiller can vary widely since there is no backup system. These fluctuating source temperatures mean that the chiller does not operate in steady state phase during the day. The Dynamic Modeling of the absorption chiller is therefore very important to predict its performance, taking into account both the transient and steady state phases. The numerical model presented in this paper is based on the mass and energy balances of each component, equations of state and equations of heat transfers. In the first part, this article presents the Dynamic Modeling of a LiBr/H2O absorption chiller. Then, experimental validation elements are proposed to validate pressures and temperatures of the chiller. Finally, a method is presented to optimize the thermal COP according to different levels of refrigerating capacities.
Ma Jian-hong - One of the best experts on this subject based on the ideXlab platform.
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Nonlinear Sensor Dynamic Modeling Algorithm
Computer Simulation, 2013Co-Authors: Ma Jian-hongAbstract:The paper proposed a nonlinear sensor Dynamic Modeling algorithm for the r Dynamic of Sensor.The parameters of LSSVM model were considered the position vector of ants while the accuracy of sensor Dynamic model was taken as the object function,and then target individuals were determined by Dynamic and stochastic extraction which make ants search global rapidly,and carried out small step search for the optimal ant of this generation.Lastly,the optimal parameter value was obtained by ACO,and the sensor Dynamic model was built.The results show that the proposed method is reliable and practicable,and it creates favorable conditions for proving Dynamic performance and online compensation of the sensors.
