Abstract
Nanorefrigerants are a new class of refrigerants, resulted by adding nanoparticles in a conventional refrigerant. Vapor compression refrigeration systems play an important role in refrigeration applications, which are sein to be one of the most energy consuming technologies. Improving energy efficiency of these systems is a nowadays challenge, due to environmental benefits. On the other hand, the use of ecological refrigerants (ODP=0 and low GWP) is an actual trend, in accordance with international regulations. This paper focuses on the performance of a vapor compression system in two cases: when the working fluid is a pure refrigerant (R600a) and when the working fluid is a nanorefrigerant (R600a/Al2O3). The nanorefigerant has resulted by adding Al2O3 nanoparticles the environmental friendly refrigerant R600a. The results indicate that the system working with the nanorefrigerant has an enhanced performance; also, it is investigated its behavior when keeping the evaporation temperature constant and the condensation temperature varies.
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