Optimization on crucial ejector geometries in a multi-evaporator refrigeration system for tropical region refrigerated trucks

Li, Shengyu; Yan, Jia; Liu, Zhan; Yao, Yong; Li, Xianbi; Wen, Na; Zou, Guiwei

doi:10.1016/j.energy.2019.116347

Cited by 33 publications

(3 citation statements)

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Section: Introductionmentioning

confidence: 99%

“…Apart from the above-mentioned studies, an ejector-based multi-evaporator refrigeration system (EMERS) was recently proposed and studied by some researchers [ 22 , 23 , 24 ]. The schematic and P–h diagram of an EMERS are displayed in Figure 1 a,b, respectively [ 22 ]. For such system, Wen et al [ 23 , 24 ] studied the effect of key geometric dimensions, operating conditions and cooling loads on ejector performances with 2D simulation methods.…”

Section: Introductionmentioning

confidence: 99%

“…For such system, Wen et al [ 23 , 24 ] studied the effect of key geometric dimensions, operating conditions and cooling loads on ejector performances with 2D simulation methods. Li et al [ 22 , 25 ] investigated the effect of crucial ejector geometries on ejector performances of such system by using a 2D numerical study. Also using a 2D numerical study, Lin et al [ 26 ] investigated the adaption of an adjustable ejector with variable cooling loads and the characteristics of the ejector pressure recovery of an EMERS.…”

Section: Introductionmentioning

confidence: 99%

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Optimization on Secondary Flow and Auxiliary Entrainment Inlets of an Ejector by Using Three-Dimensional Numerical Study

Yan

Jiang²,

Wang

2022

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In this paper, by using three-dimensional numerical simulations, the optimization of the cross-sectional area and angle of the secondary flow inlet is first conducted. Then, to further improve the ejector performance, an auxiliary entrainment is proposed and the optimization of the relative position, cross-sectional area and angle of the auxiliary entrainment inlet is accordingly performed by using three-dimensional methods. The results show that: (1) the performance of the ejector with the secondary flow in a vertical direction to the primary flow is slightly better than that in a parallel direction to the primary flow; (2) the effect of the cross-sectional area of the secondary flow has a relatively evident influence on ER, but its effect becomes ignored when the inlet area increases to a certain value; (3) the relative position and axial width of the auxiliary entrainment inlet are important factors influencing ejector performance, and after the optimization of these two geometries, the ejector ER can be increased by 97.7%; and (4) the optimization of the auxiliary entrainment inlet has a substantial effect on the ejector performance as compared to that of the secondary flow inlet. The novelty of this study is that the effect of an auxiliary entrainment on the ejector’s performance is identified by using a three-dimensional numerical simulation for the first time.

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