Results 231 to 240 of about 141,196 (301)
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Thermodynamic analysis and optimization of adsorption-based atmospheric water harvesting
International Journal of Heat and Mass Transfer, 2020Adsorption-based atmospheric water harvesting (AWH) technologies can enable decentralized and distributed water supplies in arid and water scarce regions with limited infrastructure.
Hyunho Kim +4 more
semanticscholar +1 more source
Renewable Energy, 2021
Abstract In this paper, a model based on the first and second laws of thermodynamics is developed in MATLAB R2020a Simulink software and is utilized in thermodynamically optimizing a bismuth telluride based solar thermoelectric generator (STEG) while estimating all system irreversibilities.
Chika C. Maduabuchi +2 more
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Abstract In this paper, a model based on the first and second laws of thermodynamics is developed in MATLAB R2020a Simulink software and is utilized in thermodynamically optimizing a bismuth telluride based solar thermoelectric generator (STEG) while estimating all system irreversibilities.
Chika C. Maduabuchi +2 more
openaire +1 more source
Energy Conversion and Management, 2020
Fuel indirect precooled engines are promising power for next generation in- and trans-atmospheric vehicles. As reported, performance of the engine family depends ultimately on sophisticated flow path arrangement of the multi-branch tandem cooling ...
Xuanfei Yu, Cong Wang, Daren Yu
semanticscholar +1 more source
Fuel indirect precooled engines are promising power for next generation in- and trans-atmospheric vehicles. As reported, performance of the engine family depends ultimately on sophisticated flow path arrangement of the multi-branch tandem cooling ...
Xuanfei Yu, Cong Wang, Daren Yu
semanticscholar +1 more source
Thermodynamic performance optimization for an irreversible vacuum thermionic generator
The European Physical Journal Plus, 2017Theoretical model of an irreversible vacuum thermionic generator considering external and internal finite rate heat transfer is established in this paper. By assuming radiative heat transfer processes, the general expressions of performance parameters are derived based on non-equilibrium thermodynamics and finite-time thermodynamics (FTT).
Lingen Chen +4 more
openaire +1 more source
Modern physics letters B, 2020
We study the performance optimization for mesoscopic thermoelectric generators (MTGs) with broken time-reversal symmetry by using an ecological criterion, and some specific properties of the thermoelectric system are further revealed.
W. Liu, Long Bai, Yuehua Wang
semanticscholar +1 more source
We study the performance optimization for mesoscopic thermoelectric generators (MTGs) with broken time-reversal symmetry by using an ecological criterion, and some specific properties of the thermoelectric system are further revealed.
W. Liu, Long Bai, Yuehua Wang
semanticscholar +1 more source
Energy, 2015
Abstract In this study, we are simulating the turbulent combustion of a mixed bluff-body swirl stabilized flame in a gas turbine combustion chamber and investigating the effects of different parameters, including the swirl number, distance between the air and fuel nozzle which is called bluff size, equivalence ratio, inlet fuel flow rate, and the ...
H.R. Arjmandi, E. Amani
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Abstract In this study, we are simulating the turbulent combustion of a mixed bluff-body swirl stabilized flame in a gas turbine combustion chamber and investigating the effects of different parameters, including the swirl number, distance between the air and fuel nozzle which is called bluff size, equivalence ratio, inlet fuel flow rate, and the ...
H.R. Arjmandi, E. Amani
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Applicability of the minimum entropy generation method for optimizing thermodynamic cycles
Chinese Physics B, 2013Entropy generation is often used as a figure of merit in thermodynamic cycle optimizations. In this paper, it is shown that the applicability of the minimum entropy generation method to optimizing output power is conditional. The minimum entropy generation rate and the minimum entropy generation number do not correspond to the maximum output power when
Xue-Tao Cheng, Xin-Gang Liang
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Thermodynamic optimization method of regenerator of gas turbine with entropy generation
Journal of Heat Recovery Systems, 1986Abstract In the design of the heat exchangers, the enhancement of heat transfer suraace area is effective to reduce the loss due to the fluid-to-fluid temperature difference. It, however, leads to the increase of the pressure loss in the channel. The optimum working condition must be determined by taking these trade of conditions into account.
Y. Tsujikawa +3 more
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Thermodynamic optimizing of pressure-retarded osmosis power generation systems
Journal of Membrane Science, 1999A transport equation for a solution flow increasing due to osmosis inside a hollow cylindrical fibre is derived. The equation can be applied for either direct, pressure-retarded or reverse osmosis, when the membrane is highly selective. This transport equation is used to study theoretically the net power delivered, and the entropy generated by two ...
Ari Seppälä, Markku J. Lampinen
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Thermodynamic design of a power optimized irreversible thermionic generator
IECEC-97 Proceedings of the Thirty-Second Intersociety Energy Conversion Engineering Conference (Cat. No.97CH6203), 1997The operating temperatures of the electrodes in a thermionic (TI) energy generator can better be determined through thermodynamic optimization rather than through heuristic principles. Since the power output of a TI generator has high functional dependence on operating temperatures, choice of these temperatures becomes a crucial aspect in the design of
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