Abstract
In this paper, the entrainment ratio, pump work, heat loads of heat exchangers and COPthermal were theoretically evaluated for a solar-driven ejector-vapor compression hybrid refrigeration system with R1233zd(E) and R1336mzz(Z) as the working fluids. The evaluation of the utilization potentials of R1233zd(E) and R1336mzz(Z) was presented by comparing the system performance with that of R245fa, a commonly used refrigerant in the ejector system. The results indicated that the systems with R1233zd(E) and R1336mzz(Z) had a higher entrainment ratio and lower pump work. The pump works when using R1233zd(E) and R1336mzz(Z) can be up to 14.59% and 38.05% lower than those of R245fa, respectively. Meanwhile, the system showed the highest COPthermal utilizing R1233zd(E) followed by that of R245fa, with the R1336mzz(Z) system having the lowest value. The differences between R1233zd(E) and R1336mzz(Z) systems, R1233zd(E) and R245fa systems were 4.33% and 2.0%, respectively. This paper was expected to provide a good reference for the utilizing prospect of R1233zd(E) and R1336mzz(Z) in ejector refrigeration systems.
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