The Experts below are selected from a list of 2607 Experts worldwide ranked by ideXlab platform
R F Richards - One of the best experts on this subject based on the ideXlab platform.
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Development of Scaling Model for a MEMS-Based Micro Heat Engine
Volume 10: Micro and Nano Systems, 2010Co-Authors: Hamzeh Bardaweel, C D Richards, R F Richards, B. S. Preetham, Michael J. AndersonAbstract:In this work we investigate issues related to scaling of a MEMS-based resonant heat Engine. The Engine is an External Combustion Engine made of a cavity encapsulated between two thin membranes. The cavity is filled with saturated liquid-vapor mixture working fluid. We use both model and experiment to investigate scaling of the MEMS-based resonant heat Engine. The results suggest that the performance of the Engine is determined by three major factors: geometry of the Engine, speed of operation, and thermal physical properties of Engine components. Larger Engine volumes, working fluids with higher latent heat of evaporation, slower Engine speeds, and compliant expander structures are shown to be desirable.© 2010 ASME
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design fabrication and testing of the p3 micro heat Engine
Sensors and Actuators A-physical, 2003Co-Authors: Scott A Whalen, M Thompson, D F Bahr, C D Richards, R F RichardsAbstract:The development and testing of a micro heat Engine is presented. For the first time the production of electrical power by a dynamic micro heat Engine is demonstrated. The prototype micro heat Engine is an External Combustion Engine that converts thermal power to mechanical power through the use of a novel thermodynamic cycle. Mechanical power is converted into electrical power through the use of a thin-film piezoelectric membrane generator. This design is well suited to photolithography-based batch fabrication methods, and is unlike any conventionally manufactured macro-scale Engine.
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Design, fabrication and testing of the P 3 micro heat Engine
2003Co-Authors: Scott Whalen, M Thompson, D F Bahr, C D Richards, R F RichardsAbstract:The development and testing of a micro heat Engine is presented. For the first time the production of electrical power by a dynamic micro heat Engine is demonstrated. The prototype micro heat Engine is an External Combustion Engine that converts thermal power to mechanical power through the use of a novel thermodynamic cycle. Mechanical power is converted into electrical power through the use of a thin-film piezoelectric membrane generator. This design is well suited to photolithography-based batch fabrication methods, and is unlike any conventionally manufactured macro-scale Engine. # 2003 Elsevier Science B.V. All rights reserved.
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A Micro Heat Engine for MEMS Power (Keynote Paper)
Fluids Engineering, 2002Co-Authors: C D Richards, D F Bahr, R F RichardsAbstract:Progress in the development of a micro heat Engine is presented. The prototype micro heat Engine is an External Combustion Engine, in which thermal power is converted to mechanical power through the use of a novel thermodynamic cycle. Mechanical power is converted into electrical power through the use of a thin-film piezoelectric membrane generator. The design, well suited to photolithography-based batch fabrication methods, is unlike any conventionally manufactured macro-scale Engine. In this paper, the design, fabrication and preliminary testing of a working prototype are discussed. The operation of the Engine and its key component, the piezoelectric membrane generator is presented. For the first time, the production of electrical power by a dynamic micro heat Engine is demonstrated.Copyright © 2002 by ASME
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Low Frequency Operation of the P3 Micro Heat Engine
Microelectromechanical Systems, 2002Co-Authors: Scott Whalen, M Thompson, D F Bahr, C D Richards, R F RichardsAbstract:The development and low frequency testing of a micro heat Engine is presented. Production of electrical power by a dynamic micro heat Engine is demonstrated. The prototype micro heat Engine is an External Combustion Engine in which thermal power is converted to mechanical power through a novel thermodynamic cycle. Mechanical power is converted into electrical power through the use of a thin-film piezoelectric membrane generator. This design is well suited to photolithography-based batch fabrication methods and is unlike any conventionally manufactured macro-scale Engine. A peak-to-peak voltage of .84 volts, and power output of 1.5 microwatts have been realized at operating speeds of 10 Hz. Measurements are also presented for the Engine operating at resonant conditions. Cycle speeds up to 240 Hz have been obtained, with peak-to-peak voltages of 70 millivolts.Copyright © 2002 by ASME
Morteza Salimi - One of the best experts on this subject based on the ideXlab platform.
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multi objective optimization of gpu3 stirling Engine using third order analysis
Energy Conversion and Management, 2014Co-Authors: Somayeh Toghyani, Alibakhsh Kasaeia, Seyyed Hasa Hashemabadi, Morteza SalimiAbstract:Abstract Stirling Engine is an External Combustion Engine that uses any External heat source to generate mechanical power which operates at closed cycles. These Engines are good choices for using in power generation systems; because these Engines present a reasonable theoretical efficiency which can be closer to the Carnot efficiency, comparing with other reciprocating thermal Engines. Hence, many studies have been conducted on Stirling Engines and the third order thermodynamic analysis is one of them. In this study, multi-objective optimization with four decision variables including the temperature of heat source, stroke, mean effective pressure, and the Engine frequency were applied in order to increase the efficiency and output power and reduce the pressure drop. Three decision-making procedures were applied to optimize the answers from the results. At last, the applied methods were compared with the results obtained of one experimental work and a good agreement was observed.
Somayeh Toghyani - One of the best experts on this subject based on the ideXlab platform.
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artificial neural network ann pso and ann ica for modelling the stirling Engine
International journal of ambient energy, 2016Co-Authors: Somayeh Toghyani, Alibakhsh Kasaeia, Mohammad Hossei Ahmadi, Ami H MohammadiAbstract:Nowadays, shortage of fossil fuels resources, especially oil, and also global attention to environmental hazards produced by the internal Combustion process have caused extensive researches on the development of renewable energy Engine technology. Among all kinds of renewable resources, solar energy Stirling Engines have their own special situation for energy generation with lower pollutants and sustainable sources. The Stirling Engine is an External Combustion Engine that uses any External heat source to generate mechanical power. Various parameters affect the performance of the Stirling Engine. In this study, artificial neural network (ANN) was applied to estimate the power and torque values obtained from a Stirling heat Engine (Philips M102C Engine). It employs the Levenberg–Marquardt algorithm for training ANN with back propagation network for estimating the power and torque of the Stirling heat Engine. The performances of the imperialist competitive algorithm (ICA)-ANN and ANN-particle swarm optimisa...
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multi objective optimization of gpu3 stirling Engine using third order analysis
Energy Conversion and Management, 2014Co-Authors: Somayeh Toghyani, Alibakhsh Kasaeia, Seyyed Hasa Hashemabadi, Morteza SalimiAbstract:Abstract Stirling Engine is an External Combustion Engine that uses any External heat source to generate mechanical power which operates at closed cycles. These Engines are good choices for using in power generation systems; because these Engines present a reasonable theoretical efficiency which can be closer to the Carnot efficiency, comparing with other reciprocating thermal Engines. Hence, many studies have been conducted on Stirling Engines and the third order thermodynamic analysis is one of them. In this study, multi-objective optimization with four decision variables including the temperature of heat source, stroke, mean effective pressure, and the Engine frequency were applied in order to increase the efficiency and output power and reduce the pressure drop. Three decision-making procedures were applied to optimize the answers from the results. At last, the applied methods were compared with the results obtained of one experimental work and a good agreement was observed.
C D Richards - One of the best experts on this subject based on the ideXlab platform.
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Development of Scaling Model for a MEMS-Based Micro Heat Engine
Volume 10: Micro and Nano Systems, 2010Co-Authors: Hamzeh Bardaweel, C D Richards, R F Richards, B. S. Preetham, Michael J. AndersonAbstract:In this work we investigate issues related to scaling of a MEMS-based resonant heat Engine. The Engine is an External Combustion Engine made of a cavity encapsulated between two thin membranes. The cavity is filled with saturated liquid-vapor mixture working fluid. We use both model and experiment to investigate scaling of the MEMS-based resonant heat Engine. The results suggest that the performance of the Engine is determined by three major factors: geometry of the Engine, speed of operation, and thermal physical properties of Engine components. Larger Engine volumes, working fluids with higher latent heat of evaporation, slower Engine speeds, and compliant expander structures are shown to be desirable.© 2010 ASME
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design fabrication and testing of the p3 micro heat Engine
Sensors and Actuators A-physical, 2003Co-Authors: Scott A Whalen, M Thompson, D F Bahr, C D Richards, R F RichardsAbstract:The development and testing of a micro heat Engine is presented. For the first time the production of electrical power by a dynamic micro heat Engine is demonstrated. The prototype micro heat Engine is an External Combustion Engine that converts thermal power to mechanical power through the use of a novel thermodynamic cycle. Mechanical power is converted into electrical power through the use of a thin-film piezoelectric membrane generator. This design is well suited to photolithography-based batch fabrication methods, and is unlike any conventionally manufactured macro-scale Engine.
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Design, fabrication and testing of the P 3 micro heat Engine
2003Co-Authors: Scott Whalen, M Thompson, D F Bahr, C D Richards, R F RichardsAbstract:The development and testing of a micro heat Engine is presented. For the first time the production of electrical power by a dynamic micro heat Engine is demonstrated. The prototype micro heat Engine is an External Combustion Engine that converts thermal power to mechanical power through the use of a novel thermodynamic cycle. Mechanical power is converted into electrical power through the use of a thin-film piezoelectric membrane generator. This design is well suited to photolithography-based batch fabrication methods, and is unlike any conventionally manufactured macro-scale Engine. # 2003 Elsevier Science B.V. All rights reserved.
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A Micro Heat Engine for MEMS Power (Keynote Paper)
Fluids Engineering, 2002Co-Authors: C D Richards, D F Bahr, R F RichardsAbstract:Progress in the development of a micro heat Engine is presented. The prototype micro heat Engine is an External Combustion Engine, in which thermal power is converted to mechanical power through the use of a novel thermodynamic cycle. Mechanical power is converted into electrical power through the use of a thin-film piezoelectric membrane generator. The design, well suited to photolithography-based batch fabrication methods, is unlike any conventionally manufactured macro-scale Engine. In this paper, the design, fabrication and preliminary testing of a working prototype are discussed. The operation of the Engine and its key component, the piezoelectric membrane generator is presented. For the first time, the production of electrical power by a dynamic micro heat Engine is demonstrated.Copyright © 2002 by ASME
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Low Frequency Operation of the P3 Micro Heat Engine
Microelectromechanical Systems, 2002Co-Authors: Scott Whalen, M Thompson, D F Bahr, C D Richards, R F RichardsAbstract:The development and low frequency testing of a micro heat Engine is presented. Production of electrical power by a dynamic micro heat Engine is demonstrated. The prototype micro heat Engine is an External Combustion Engine in which thermal power is converted to mechanical power through a novel thermodynamic cycle. Mechanical power is converted into electrical power through the use of a thin-film piezoelectric membrane generator. This design is well suited to photolithography-based batch fabrication methods and is unlike any conventionally manufactured macro-scale Engine. A peak-to-peak voltage of .84 volts, and power output of 1.5 microwatts have been realized at operating speeds of 10 Hz. Measurements are also presented for the Engine operating at resonant conditions. Cycle speeds up to 240 Hz have been obtained, with peak-to-peak voltages of 70 millivolts.Copyright © 2002 by ASME
Alibakhsh Kasaeia - One of the best experts on this subject based on the ideXlab platform.
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artificial neural network ann pso and ann ica for modelling the stirling Engine
International journal of ambient energy, 2016Co-Authors: Somayeh Toghyani, Alibakhsh Kasaeia, Mohammad Hossei Ahmadi, Ami H MohammadiAbstract:Nowadays, shortage of fossil fuels resources, especially oil, and also global attention to environmental hazards produced by the internal Combustion process have caused extensive researches on the development of renewable energy Engine technology. Among all kinds of renewable resources, solar energy Stirling Engines have their own special situation for energy generation with lower pollutants and sustainable sources. The Stirling Engine is an External Combustion Engine that uses any External heat source to generate mechanical power. Various parameters affect the performance of the Stirling Engine. In this study, artificial neural network (ANN) was applied to estimate the power and torque values obtained from a Stirling heat Engine (Philips M102C Engine). It employs the Levenberg–Marquardt algorithm for training ANN with back propagation network for estimating the power and torque of the Stirling heat Engine. The performances of the imperialist competitive algorithm (ICA)-ANN and ANN-particle swarm optimisa...
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multi objective optimization of gpu3 stirling Engine using third order analysis
Energy Conversion and Management, 2014Co-Authors: Somayeh Toghyani, Alibakhsh Kasaeia, Seyyed Hasa Hashemabadi, Morteza SalimiAbstract:Abstract Stirling Engine is an External Combustion Engine that uses any External heat source to generate mechanical power which operates at closed cycles. These Engines are good choices for using in power generation systems; because these Engines present a reasonable theoretical efficiency which can be closer to the Carnot efficiency, comparing with other reciprocating thermal Engines. Hence, many studies have been conducted on Stirling Engines and the third order thermodynamic analysis is one of them. In this study, multi-objective optimization with four decision variables including the temperature of heat source, stroke, mean effective pressure, and the Engine frequency were applied in order to increase the efficiency and output power and reduce the pressure drop. Three decision-making procedures were applied to optimize the answers from the results. At last, the applied methods were compared with the results obtained of one experimental work and a good agreement was observed.
