Published date: Jun 02 2020

Journal Title: KnE Engineering

Issue title: International Congress on Engineering — Engineering for Evolution

Pages: 585–598

DOI: 10.18502/keg.v5i6.7080

Mário Rui Ribeiro de Almeidamariorui.r.a@hotmail.comIPL - Instituto Politécnico de Lisboa

Cláudia S.S.L. CasacaCIMOSM - Centro de Investigação em Modelação e Otimização de Sistemas Multifuncionais

This paper presents some natural and artificial solutions for reducing the use of HFCs in commercial refrigeration systems to limit greenhouse gas (GHG) emissions to the atmosphere. Additionally, the case study of a medium size supermarket is addressed. For this, a series of cooling systems have been sized which are divided into Coolbox/Waterloop systems and centralized systems. Three centralized systems with R410a, R717 and R744/R717 were dimensioned as well as a Coolbox/Waterloop system with R410a. This way is possible to ensure a comparison not only between fluids but also between the Coolbox/Waterloop technology and the centralized solution. After sizing the systems, the comparative energy, economic and carbon emission studies of the systems, in which their application has been found to be possible, are presented. After analysing the systems covered and the studies performed, it is concluded not only about the best applicable system, but also about the limitations found in each of the others.

Keywords: Natural refrigerants, Commercial refrigeration, Coolbox, Waterloop

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