Efficiency Of The Thermodynamic Cycle
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Análise da influência de variáveis operacionais de um sistema de trigeração sobre o desempenho termodinâmico e a distribuição das utilidades / Analysis of operational variables in a trigeneration system and their influence over thermodynamic performance and distribution of utilities
In this work a trigeneration system, simultaneous production of power, heat and cooling using only one energy source, was analyzed, aiming at a better energetic efficiency of the system, showing the influence of some operating variables of the process on the utilities generated and the efficiency of the overall system. In this study the influence of the comp
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2012
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2. Micro-turbine design point definition using optimization techniques
During a gas turbine development phase an important engineer task is to find the appropriate engine design point that meet all required specifications. This task can be very arduous because all possible operating points in the gas turbine operational envelope need to be analyzed, for the sake of verification of whether or not the established performance migh
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/03/2012
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3. Experimental mapping of the thermodynamic losses in vapor compression refrigeration systems
The present study introduces a methodology for mapping the thermodynamic losses of vapor compression refrigeration systems which consists of a theoretical model that splits the coefficient of performance into four terms: (i) the coefficient of performance of an ideal cycle (Carnot), (ii) the efficiency of a real cycle running with an ideal compressor, (iii)
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-06
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4. Thermodynamic simulation of biomass gas steam reforming for a solid oxide fuel cell (SOFC) system
This paper presents a methodology to simulate a small-scale fuel cell system for power generation using biomass gas as fuel. The methodology encompasses the thermodynamic and electrochemical aspects of a solid oxide fuel cell (SOFC), as well as solves the problem of chemical equilibrium in complex systems. In this case the complex system is the internal refo
Brazilian Journal of Chemical Engineering. Publicado em: 2009-12
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5. Analise do desempenho termodinamico e ambiental de um ciclo de refrigeração e proposta de uma função global de avaliação / Thermodynamic and enviromental analisys of a refrigerator cycle performance and propose of a global function evaluation
This work presents a proposal function to vapor compression refrigerator cycle performance from environmental and thermodynamic point of view. The function was developed through the statistic analysis of a refrigerator cycle computational results. The proposal function represents an evaluation indice of efficiency and environment criterions and was developed
Publicado em: 2009
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6. ESTUDO DA EFICIÊNCIA ENERGÉTICA EM SISTEMAS DE REFRIGERAÇÃO MECÂNICA QUE UTILIZAM R-717 CONTAMINADO POR ÁGUA UMA APLICAÇÃO PARA INDÚSTRIA PESQUEIRA DO RIO GRANDE
Este trabalho aborda, a influência da contaminação por água, sobre a eficiência energética de uma instalação de refrigeração mecânica funcionando com fluido refrigerante R-717. O estudo toma como base as amostras de refrigerante coletadas e as grandezas termodinâmicas levantadas em pesquisa de campo realizadas nos sistemas de refrigeração da in
Publicado em: 2006
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7. Avaliação de um secador de bananas do tipo cabine com bandejas
The objective ofthis work was to evaluate a dryer equipment for dehydrated ftuits production, by means of the characterization of the equipment, energy analysis and economic evaluation of the process for both organic and conventional bananas. With regard to drying process, the equipment had some deficiencies related to the uniformity inside the drying chambe
Publicado em: 2001
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8. Predictions of thermodynamic efficiency in a pumped biochemical reaction.
We propose and analyze a possible experimental system for the investigation of the thermodynamic efficiency of generating biochemical gradients. We investigate the efficiency of a model pump that uses 6-phosphofructokinase (EC 2.7.1.11, an enzyme that exhibits highly nonlinear kinetics), chromatophores from Rhodobacter sphaeroides, and light to generate a bi
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9. Modulation of stoichiometry of the sarcoplasmic reticulum calcium pump may enhance thermodynamic efficiency.
The coupling of calcium transport to ATP hydrolysis in rabbit muscle sarcoplasmic reticulum vesicles was determined under steady-state conditions in the presence of 5 mM oxalate and using various concentrations of vesicles to modulate the concentration of free Ca2+ in the medium. This experimental approach takes advantage of the fact that at high concentrati