EXPERIMENTAL EVALUATION OF A CASCADE REFRIGERATION SYSTEM USING R-134a AND R-404a

Autores

DOI:

https://doi.org/10.47820/recima21.v3i2.1127

Palavras-chave:

Refrigeration, cascade refrigeration system, energy analysis

Resumo

Cascade refrigeration system is an attractive technology for low-temperature requirement, allowing operation under these conditions with positive suction pressures and a moderate condensation pressure at ambient temperature. This work describes a performance analysis of a cascade refrigeration prototype equipped with hermetic compressors working with R-134a and R-404a as refrigerants, thermally connected by a tube-in-tube-type cascade-condenser. Energy flows and performance parameters were evaluated under different evaporating temperature conditions of the low temperature cycle (LTC). The results showed an increase in energy efficiency ratio (EER) and coefficients of performance (COP) of cascade system as well as of each cycle with the increase of LTC evaporating temperature, even with a simultaneous increase of temperature difference in cascade-condenser.

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Biografia do Autor

Vitor Pinheiro Ferreira

Engenheiro Mecânico com atuação na área de refrigeração e climatização, energia, petróleo e gás, biocombustíveis, motores de combustão interna, mestre em Mecatrônica e doutor em Energia. Professor do Instituto de Ciência, Tecnologia e Inovação da Universidade Federal da Bahia.

Micael Lima Conceição

Bacharel em Ciências Exatas e Tecnológicas, Engenheiro Mecânico pela Universidade Federal do Recôncavo da Bahia. Atuante na área de Refrigeração por mais de 5 anos.

William Souza dos Santos

Técnico em Eletromecânica pelo CETEB, Engenheiro Mecânico, Bacharel Ciências Exatas e Tecnológicas, Engenheiro Mecânico pela Universidade Federal do Recôncavo da Bahia, pós-graduando em Engenharia de climatização pela Faculdade Profissional (FAPRO).

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Publicado

07/02/2022

Como Citar

Pinheiro Ferreira, V., Lima Conceição, M. ., & Souza dos Santos, W. (2022). EXPERIMENTAL EVALUATION OF A CASCADE REFRIGERATION SYSTEM USING R-134a AND R-404a. RECIMA21 - Revista Científica Multidisciplinar - ISSN 2675-6218, 3(2), e321127. https://doi.org/10.47820/recima21.v3i2.1127