| 论文简介 |
This study presents a modified ejector expansion cycle with zeotropic mixtures (R290/R600a) for
freezers, in which an ejector and a phase-separator are employed to enhance the cycle performance.
Energetic and exergetic methods are used to theoretically investigate the system operating characteristics.
In addition, comparative research among the modified cycle, conventional ejector expansion cycle
and basic throttling cycle is carried out. The results demonstrate that the modified cycle exhibits higher
refrigeration COP (coefficient of performance), volumetric refrigeration capacity and system exergy
efficiency than conventional ejector expansion cycle and basic throttling cycle. Under the given operation
conditions, the system performance improvements of the modified cycle in terms of the COP, refrigeration
capacity and system exergy efficiency over the basic throttling cycle could reach about 56.0%, 4.5%
and 77.7%, respectively. The performance characteristics of the proposed cycle show its potential practical
advantages in freezer applications. |
(创新港)
