Garcia Marcos A, Gonçalves Joaquim M, Mendonça Kátia C, Mendes Nathan, Mendes Luciano A
Instituto Federal de Santa Catarina, Departamento de Refrigeração e Climatização, Rua José Lino Kretzer, 608, Praia Comprida, 88103-310 São José, SC, Brazil.
Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Morro do Estado, 80215-901 Curitiba, PR, Brazil.
An Acad Bras Cienc. 2021 Apr 23;93(1):e20190505. doi: 10.1590/0001-3765202120190505. eCollection 2021.
The phenomenon of summer mortality in Pacific oysters cultures also occurs in Brazilian crops, with predominance in the adult phase, generating significant losses for local producers. In the search for a technological solution to mitigate its effects, the mechanical vapour compression and hydraulic refrigeration concepts are evaluated as two proposed cooling technologies. The comparative analysis carried out with numeric simulations indicated that the hydraulic cooling system presents disadvantages regarding both the size of the compression column and the energy efficiency, compared to the mechanical vapour compression cycle. By computing only the compression power, a COP value of 6.9 results for the MVCS at TCOND = 29.5 oC and TEVAP = 7.2 oC, while for HRS the COP value is around 3.1 for identical conditions. Results from the analysis contradict former publications, but are consistent with recent findings reported in literature.
