文章基本信息

标题：Investigation of Modified Ejector Cycle on Residential Air Conditioner with Environmentally Benign Refrigerant of R290
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作者：Kasni Sumeru ; Mohamad Firdaus Sukri ; Pratikto Pratikto 等
期刊名称：Journal of Thermal Engineering
电子版ISSN：2148-7847
出版年度：2020
卷号：6
期号：3
页码：297-312
DOI：10.18186/thermal.711539
出版社：Yildiz Technical University
摘要：This paper investigates a modified ejector cycle (MEC) to further enhance the COP improvement of residential air conditioner (A/C), as compared to the standard ejector cycle (SEC). This paper also presents numerical and experimental studies of the MEC. Numerical approach of MEC performances was evaluated by using SEC cycle that had been developed by many researchers. In the experimental study of MEC, three motive nozzle diameters of 0.9, 1.0 and 1.1 mm were utilized. In addition, environmentally friendly refrigerant of R290 (propane) was used as a working fluid. The modeling results of residential A/C with the cooling capacity of 2.5 kW showed higher COP improvements of MEC than SEC for all entrainment ratios of the ejector. There was no COP improvement for SEC at a low entrainment ratio, whereas there are always COP improvements for all entrainment ratios for MEC. In addition, the experimental results showed the highest COP improvement of 16.67% was achieved with the motive nozzle diameter of 1.1 mm.
关键词：Air Conditioner; Ejector; R290; Modified Ejector Cycle; Entrainment Ratio; COP Improvement