Analise e simulação de um sistema de absorção agua-amonia para produção de gelo em escamas

AUTOR(ES)
DATA DE PUBLICAÇÃO

1999

RESUMO

The present work searches for a detailed numerical simulation of an scale ice-maker operating on an absorption cycle using the pair water - ammonia. With such aim a mathematical model was constructed embodying thermodynamics, heat transfer and fluid mechanics phenomena. Such model turns to be an important tool for analysis and development of the system. Firstly a steady state model is presented that helps understanding the processes going on each component and how those affect the operation and performance of the whole installation. Secondly the transient model of the evaporator is developed. Third the whole system simulation is rewritten to include models of the transient regime operation of each component. By coupling the second and the third models the dynamic simulation of the system is built. Both steady state and transient modeling provide the main operating parameters of the system as function machine constructive characteristics and of the external variables such as wet bulb temperature and heating steam pressure

ASSUNTO(S)

gelo - indústria modelos matematicos refrigeração absorção

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