Performance analysis of auxiliary entrainment ejector used in multi-evaporator refrigeration system

doi:10.1016/j.tsep.2022.101307

GIEC OpenIR

	Performance analysis of auxiliary entrainment ejector used in multi-evaporator refrigeration system
	Li, Shengyu 1; Lu, Jun 1; Yan, Jia 2; Hu, Yafei 3,4
	2022-07-01
发表期刊	THERMAL SCIENCE AND ENGINEERING PROGRESS
ISSN	2451-9049
卷号	32 页码:15
通讯作者	Lu, Jun(20131702056@cqu.edu.cn) ; Yan, Jia(justinyan08@swust.edu.cn)
摘要	In this paper, a numerical method is used to maximize the performance of an auxiliary entrainment ejector used in multi-evaporator refrigeration system developed for refrigerated trucks in tropical and humid climates. The Computational Fluid Dynamics model based on the previous study is developed to discuss the effects of key design parameters of an auxiliary entrainment ejector. The simulation model is validated against experimental data of an R134a test rig. The numerical models agree fairly well with the experiments. In order to maximize the efficiency of the auxiliary inlet, the diffuser angle is considered critically. The influence of diffuser angle on the optimal position and angle of the auxiliary inlet is then discussed. As well, the effect of secondary flow and auxiliary flow at varying temperatures on the efficiency of auxiliary entrainment ejector is analyzed. The main results are given as follows: (1) optimal auxiliary inlet position as well as angle and entrainment ratio depend on diffuser angle, and optimum parameters combination (length ratio of 1.9, inlet angle of 45 degrees, and diffuser angle of 4 degrees) of the new-type ejector exists; (2) with the secondary flow working temperature of -10 degrees C, the entrainment ratio reaches its maximum value of 0.658, and the corresponding entrainment ratio at secondary inlet is 2.60; (3) the auxiliary entrainment ejector can only function if the auxiliary flow working temperature is between -30 degrees C to-22 degrees C; (4) it is best to connect the secondary inlet to the medium temperature evaporator, with the auxiliary inlet to the low temperature evaporator, when using the secondary and auxiliary inlet connections to separate evaporators with varied operating temperatures.
关键词	Auxiliary entrainment ejector Auxiliary inlet Diffuser angle Variable operating conditions Multi-evaporator ejector refrigeration system
DOI	10.1016/j.tsep.2022.101307
关键词[WOS]	VAPOR COMPRESSION REFRIGERATION ; COMPUTATIONAL FLUID-DYNAMICS ; AIR-CONDITIONING SYSTEM ; STEAM EJECTOR ; STRUCTURE OPTIMIZATION ; PARAMETERS ; GEOMETRY ; DESIGN ; IMPROVEMENT ; PREDICTION
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51806235] ; Educational Department of Sichuan Province, China[17ZB0449]
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
项目资助者	National Natural Science Foundation of China ; Educational Department of Sichuan Province, China
WOS类目	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
WOS记录号	WOS:000799402500001
出版者	ELSEVIER
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/36788
专题	中国科学院广州能源研究所
通讯作者	Lu, Jun; Yan, Jia
作者单位	1.Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China 2.Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang 621010, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Shengyu,Lu, Jun,Yan, Jia,et al. Performance analysis of auxiliary entrainment ejector used in multi-evaporator refrigeration system[J]. THERMAL SCIENCE AND ENGINEERING PROGRESS,2022,32:15.
APA	Li, Shengyu,Lu, Jun,Yan, Jia,&Hu, Yafei.(2022).Performance analysis of auxiliary entrainment ejector used in multi-evaporator refrigeration system.THERMAL SCIENCE AND ENGINEERING PROGRESS,32,15.
MLA	Li, Shengyu,et al."Performance analysis of auxiliary entrainment ejector used in multi-evaporator refrigeration system".THERMAL SCIENCE AND ENGINEERING PROGRESS 32(2022):15.