Abstract

Currently, there are two trends in the development of vaporcompression refrigeration systems (VCRSs). First, the use of "natural" refrigerants (propane R290, isobutane R600a), which contributes both to an increase in the cooling coefficient of vapor compression refrigeration equipment and to a decrease in greenhouse gas (GHG) emission [1]. However, the list of refrigerants for marine refrigeration is limited therefore this task is complex [2, 3]. The prospect “natural” R600a and R290 are forbidden to be used in the vessel’s refrigeration equipment (except the cases when the mass of the refrigerant charge is less than 150 g), as they are class A3 hazard refrigerants (fire hazardous) [4]. The second is the use of nano additives to the working fluids of vapor compression refrigeration systems to increase their efficiency without modernization.

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