SIMULAÇÃO DE SISTEMAS DE REFRIGERAÇÃO EM SUPERMERCADOS / REFRIGERATION SYSTEMS SIMULATION IN SUPERMARKETS

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

A thermodynamic model was developed for the evaluation of energy consumption and environmental impact (LCCP and TEWI) of supermarket refrigeration systems operating in three different configurations (direct expansion, secondary fluid and cascade). The model simulates refrigeration systems operating with pure substances or a mixture (azeotropic or non-azeotropic) of them. A BIN analysis is carried out taking into account year-round climate data for each city and the annual energy consumption, in each time interval, of each component: compressor, pumps, freezers and coolers. Refrigerant inventory was also calculated. Finally, with the annual energy consumption, total refrigerant charge, annual leakage estimate, environmental impact indicators LCCP (Life cycle climate performance) and TEWI (Total equivalent warming impact), in kilograms equivalent of CO(2), were calculated. A computational code, with interface based on Visual Basic 6.0 platform, was developed for the solution of the resulting systems of equations that form the mathematical model. Predicted results were compared with field data and with data predicted from other models.

ASSUNTO(S)

electrical energy consumption refrigeracao supermarket energia impacto ambiental energy environmental impact analysis supermercado refrigeration consumo de energia eletrica

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