NEW REFRIGERANT OPTIONS FOR R404A REPLACEMENT IN TRUCK REFRIGERATION SYSTEMS

摘要

R404A is largely used in refrigerated transportation systems. Given the relatively high refrigerant leakagernrates of transportation systems and the relatively high 100-year GWP (3943) of R404A, it is increasinglyrnunder scrutiny. Furthermore, containment measures are included in the recent European Union F-Gasrnregulation 517/2014. In this paper a thermodynamic screening of single-component refrigerants, such asrnHFCs, HFOs, HCs, CO_2, and their binary blends are considered in an ideal vapour compression refrigerationrncycle operating with application temperatures appropriate for truck refrigeration systems. Based on thernthermodynamic screening, the three promising options, in terms of Coefficient of Performance (COP) and ofrnVolumetric Cooling Capacity (VCC), are selected for further analysis using an advanced simulation model inrnorder to compare their performances with R404A in a typical European truck refrigeration system. Thernestimated COP and VCC are compared and strategies for improving the energetic performance of thernrefrigeration system are outlined.