Projeto e simulação de resfriadores de líquidos. / Chillers design and simulation.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

In the last decade, the world passed trough an important transformation. The raise in the number of companies and globalization obligated the industry to increase production and quality to be competitive. This scene turns clear the importance of researches in the industrial refrigeration area. The cooling systems allow reduction in the manufacture time cycle, and consequently, rise in productivity, more reliability and quality of the final product. In this work, an analysis of the design, dimensioning and simulation of liquid chillers used for industrial refrigeration is presented. The main aspects of the hydraulic and refrigeration systems and the dimensioning of the components used in the equipment are analyzed. After the analysis of the project, a mathematical model of the system for simulation in equilibrium state is developed. The results of the simulations are compared with the data obtained during the tests and the maximum differences was 3ºC in the evaporating temperature, 2ºC in condensing temperature and 20% of cooling capacity. Additionally, the results show that the equipment hasn?t achieved the design capacity and changes were proposed in the compressor and air cooled condenser. The equipment has been tested and the data obtained has been compared with the simulation. It?s suggested to change the compressor for another model with higher capacity, to increase the heat exchange area and to reduce the number of fins in the air cooled condenser. Finally, the development of this work resulted in a simulation program of liquid coolers, very useful tool for analysis and optimization.

ASSUNTO(S)

simulação design refrigeration refrigeração resfriadores de líquidos chillers simulation projeto

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