Absorption Cooling
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. ENERGETIC ANALYSIS OF AN ABSORPTION CHILLER USING NH3/LiNO3 AS AN ALTERNATIVE WORKING FLUID
Abstract This paper presents a thermodynamic model developed for a prototype absorption chiller using NH3/LiNO3 with 10 kW of nominal capacity. The study was undertaken using thermodynamic modeling based on the mass and energy balance, takes the overall heat transfer coefficients into consideration and uses the characteristic equation method. First, the resu
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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2. Modification of the Crystalline Structure of ZnO Nanoparticles Embedded Within a SiO2 Matrix due to Thermal Stress Effects
Self-assembled nanocrystals of ZnO were embedded within a SiO2 matrix by a sequential deposit using reactive R.F. sputtering. The ZnO nanoparticles (NP’s) were obtained by depositing a very thin layer (~20 nm) of Zn on the bottom of the valleys of a first SiO2 rough surface and then covered by another SiO2 layer at 500 ºC. The stress produced, due to the
Mat. Res.. Publicado em: 23/09/2019
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3. Water absorption process capability analysis by chicken carcasses during precooling
Abstract Cooling of carcasses using water immersion is the most used process in the poultry industry. In this stage, besides the reduction of temperature, water absorption in the carcasses occurs and, consequently, in the chicken cuts, which are monitored by the companies and supervised by the Ministry of Agriculture, Livestock, and Supply of Brazil, which
Food Sci. Technol. Publicado em: 31/01/2019
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4. Ultrafast Dynamics of Au Nanopyramid Interfaces Prepared by Nanosphere Lithography: Effect of Substrate Chemical Composition
This work describes ultrafast spectroscopy studies of Au triangular pyramid particle arrays deposited over glass (termed Au/glass), and 190 nm indium tin oxide (ITO) film (termed Au/ITO/glass) prepared by nanosphere lithography. The linear absorption spectra of Au/glass and Au/ITO/glass exhibit surface plasmon resonances at 800 and 870 nm, respectively, in g
J. Braz. Chem. Soc.. Publicado em: 2016-02
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5. Estudo termodinâmico e avaliação experimental do protótipo 01 do sistema de refrigeração por absorção com o par água-brometo de lítio da Recogás. / Thermodynamic study and experimental evaluation of the prototype 01 of a cooling system for absorption using water-lithium bromide pair in Recogás.
O presente estudo descreve uma análise teórico-experimental do Protótipo 01, este sendo uma máquina de refrigeração por absorção de simples efeito com o par água brometo de lítio como fluido de trabalho e que utiliza gás natural como fonte energética para o gerador de vapor, visando a simulação de cogeração de rejeitos térmicos. A unidade ve
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/09/2012
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6. Controle de vazão PID para sistemas de refrigeração por absorção com o par água-brometo de lítio / PID FLOW CONTROL FOR ABSORPTION REFRIGERATION SYSTEMS WITH PAIR WATER LITHIUM BROMIDE
A presente abordagem descreve o desenvolvimento de um sistema de controle de vazão para unidades de refrigeração por absorção com o par água-brometo de lítio. Este sistema contemplará unidades de refrigeração que operam a pressões negativas, onde a aferição de vazão por métodos intrusivos não é tolerada e a recirculação é promovida por bo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2012
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7. 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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8. Thermodynamic analysis of gas turbine cycle using inlet air cooling methods
This work focuses on a comparative analysis among three compressor inlet air cooling techniques using a thermodynamic approach to simulate the gas turbine cycle. Firstly, a Base Case is tested to determine the gas turbine performance without any cooling method. The effect of site altitude on the power output gas turbine even without any cooling technique is
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/02/2012
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9. Analysis of Gas Turbine Performance with Inlet Air Cooling Techniques Applied to Brazilian Sites
Abstract: For geographic regions where significant power demand and highest electricity prices occur during the warm months, a gas turbine inlet air cooling technique is a useful option for increasing output. Inlet air cooling increases the power output by taking advantage of the gas turbine's feature of higher mass flow rate, due the compressor inlet temper
J. Aerosp. Technol. Manag.. Publicado em: 2012-09
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10. Pão de forma sem glúten a base de farinha de arroz / Gluten free pan bread based on rice flour
It is being a challenge for researchers in the food field to make available to the celiac the variety of foods that they are not allowed to consume. The bread has been studied as deep in it, especially the replacement of the technological functionality of gluten, which is particularly nontrivial. The objective of this work was to develop gluten-free bread ba
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2011
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11. Nonlinear thermotropic and thermo-optical behaviour of planar oriented textures in nematic liquid crystals at phase transitions
Thermotropic, thermo-morphologic and thermo-optical properties of the planar oriented nematic liquid crystals have been investigated for large temperature interval and especially for the direct nematic - isotropic liquid and the reverse isotropic liquid - nematic phase transition regions. Temperature dependences of the optical transmission, absorption coeffi
Brazilian Journal of Physics. Publicado em: 2010-06
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12. APPICATION OF FUZZY LOGIC IN CONTROL THE CRYSTALLIZATION OF AN ABSORPTION REFRIGERATION SYSTEM WITH PAIR WATER LITHIUM BROMIDE / Aplicação da lógica fuzzy no controle da cristalização de um sistema de refrigeração por absorção com par brometo de lítio
This work presents theoretical and experimental study of a system of control for a steam generator. This system was developed to control the crystallization of a cooling system for absorption. The control system maintains the pressure generator above the zone of crystallization of diagram temperature pressure-saturated solution concentration of LiBr-water. T
Publicado em: 2010