Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant Part 1: Thermodynamic model and parameter analyses
Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant Part 1: Thermodynamic model and parameter analyses
... reserved. Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant Part 1: Thermodynamic model and parameter analyses Lingen Chen, Bo Yang, Fengrui ... University of Engineering, Wuhan 430033, P. R. China. Abstract A thermodynamic model of an endoreversible intercooled regenerative Brayton heat and power cogeneration plant coupled to constant-temperature ... Introduction The heat and power cogeneration plants are more advantageous in terms of energy and exergy efficiencies than plants which produce heat and power separately [1]. It is important to determine...
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Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant Part 2: Heat conductance allocation and pressure ratio optimization
... [1] Chen L, Yang B, Sun F. Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant. Part 1: thermodynamic model and parameter analyses. Int. ... reserved. Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant Part 2: Heat conductance allocation and pressure ratio optimization Bo Yang, ... Conclusion Finite time exergoeconomic performance of a heat and power cogeneration plant model composed of an endoreversible intercooled regenerative Brayton closed-cycle coupled to constant-temperature...
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Exergoeconomic performance optimization of an endoreversible intercooled regenerative Brayton combined heat and power plant coupled to variable-temperature heat reservoirs
... Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant. Part 1: thermodynamic model and parameter analyses. Int. J. Energy and Environment, ... Yang B, Chen L, Sun F. Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant. Part 2: heat conductance allocation and pressure ratio optimization. ... C and maxH C are the smaller and the larger of the two capacitance rates H C and wf C , minL C and maxL C are the smaller and the larger of the two capacitance rates L C and wf C , Imin C and...
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Finite time exergoeconomic performance optimization for an irreversible universal steady flow variable-temperature heat reservoir heat pump cycle model
... and 1maxH C are the minimum and maximum of H C and 3wf C , respectively; 2minH C and 2maxH C are the minimum and maximum of H C and 4wf C , respectively; 1minL C and 1maxL C are the minimum and ... maximum of L C and 1wf C , respectively; 2minL C and 2maxL C are the minimum and maximum of L C and 2wf C , respectively; and 1H N , 2H N , 1L N and 2L N are the numbers of heat transfer units of ... economic optimization to evaluate and optimize the design and performance of energy systems. Salamon and Nitzan’s work [18] combined the endoreversible model in finite time thermodynamics with exergoeconomic...
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Finite time exergoeconomic performance optimization of a thermoacoustic heat engine
... engineering, and technology support for propulsion plants. He has been the Director of the Department of Nuclear Energy Science and Engineering and the Director of the Department of Power Engineering. ... L A RT Tx n ⎡⎤ =− ⎣⎦ , and () 21 sgn( ) n n mH L A IT Tx n ⎡⎤ =− ⎣⎦ , where () e R and () m I indicate the real part and imaginary part of complex number. Maximizing η and π with respect to f ... Equations (35) and (36) are the relationship between the efficiency and the profit rate of the irreversible thermoacoustic heat engine with heat resistances and heat leakage losses. If 1 ϕ > and 0q...
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Báo cáo khoa học: "Efficient Optimization of an MDL-Inspired Objective Function for Unsupervised Part-of-Speech Tagging" docx
... and Italian.3.1 English POS taggingTo set the hyperparameters αt and β, we preparedthree held-out sets H1, H2, and H3from the PennTreebank. Each Hicomprised about 24, 000 wordsannotated ... is higher thanthe 85.2% that Goldwater and Griffiths (2007) ob-tain using Bayesian methods for inferring bothPOS tags and hyperparameters. It is much higherthan the 82.4% that standard EM achieves ... improvement in tag-ging accuracy over standard EM. We infer the hy-perparameters of our model using held out data and achieve better accuracies than (Goldwater and Griffiths, 2007). We have also shown...
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Exergoeconomic performance optimization for a steadyflow endoreversible refrigeration model including six typical cycles
... optimization of an endoreversible intercooled regenerated Brayton cogeneration plant. Part 1: thermodynamic model and parameter analyses. Int. J. Energy and Environment, 2011, 2(2): 199-210. [45] Yang B, ... Chen L, Sun F. Exergoeconomic performance optimization of an endoreversible intercooled regenerated Brayton cogeneration plant. Part 2: heat conductance allocation and pressure ratio optimization. ... finite-time exergoeconomic performance bound. Moreover, performance analysis and optimization of the model are carried out in order to investigate the effect of cycle process on the performance of the...
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Performance optimization of a PEM hydrogen-oxygen fuel cell
... the modelling results and the experimental data. The model is shown a very useful for estimating the performance of PEM fuel cell stacks and optimization of fuel cell system integration and operation. ... determine the performance of a PEM fuel cell. The influence of some operating parameters on the performance of PEM fuel cell has been investigated using pure hydrogen on the anode side and oxygen ... proton exchange membrane fuel cells (PEMFCs) are compact and lightweight, work at low temperatures with a high output power density, and offer superior system start-up and shutdown performance. These...
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Cooling load and COP optimization of an irreversible Carnot refrigerator with spin-1/2 systems
... cycles, many authors studied the performance of quantum refrigerator using ideal quantum Bose and Fermi gases [36-38]. Bartana and Kosloff [39] and Wu et al [40] studied the thermodynamic performance ... irreversibilities of heat resistance, internal friction and bypass heat leakage, and studied the optimal ecological performances of the quantum heat engines. Besides performance of harmonic and spin-1/2 quantum ... performance optimization of a Carnot quantum engine. In 2000, Feldmann and Kosloff [20] introduced internal friction in the performance investigation for a quantum Brayton heat engine and heat...
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Cooling load optimization of an irreversible refrigerator with combined heat transfer
... [13]. The performance of an air-standard Miller cycle has been analyzed using finite-time thermodynamics [14]. An endoreversible intercooled regenerative Brayton cogeneration plant model coupled ... endoreversible Brayton cogeneration plant, Part 1: thermodynamic model and parametric analysis. Int. J. Ambient Energy, 2011, 32(3): 116-123. [16] Chen L., Sun F., Wu C., Kiang R.L. A generalized model of ... optimal performance of an endoreversible steady flow refrigerator cycle consisting of a constant thermal capacity heating branch, a constant thermal capacity cooling branch and two adiabatic branches...
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