Comparative study of air conditioning systems with vapor compression chillers using the concept of green buildings

Autores

  • Gutenberg da Silva Pereira Universidade Federal de Pernambuco Autor
  • Ana Rosa Primo Universidade Federal de Pernambuco Autor
  • Alvaro Antonio Ochoa Villa Universidade Federal de Pernambuco / Instituto Federal de Tecnologia de Pernambuco Autor

DOI:

https://doi.org/10.4025/actascitechnol.v37i4.27390

Palavras-chave:

centrifugal chiller, screw chiller, energy, simulation, COP.

Resumo

This paper sets out to compare two different cooling systems that use vapor compression chillers for air conditioning environments. It was proposed to compare different operations in isolated and combined action operations. These operations are evaluated in the concepts of green buildings. A mathematical model was developed based on the principles of mass and energy conservation and complemented by various functions so as to determine the thermophysical properties and efficiencies of the compressors. The equations of the model were solved by the EES (Engineering Equation Solver) program. The model evaluates the influence of the main HVAC operating parameters of the chilled water system when operating under three different configurations. The results showed that the system with a differentiated compression presents a COP equal to that of the system with screw chillers in the range  0-300 RTs, and a COP hat is on average 9% higher in the range 400-800 RTs.

 

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Arquivos adicionais

Publicado

2015-10-01

Edição

Seção

Engenharia Mecânica

Como Citar

Comparative study of air conditioning systems with vapor compression chillers using the concept of green buildings. (2015). Acta Scientiarum. Technology, 37(4), 339-346. https://doi.org/10.4025/actascitechnol.v37i4.27390

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