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A CFD Analysis on Hydrodynamics Characteristics of Gas-Liquid Ejector
Tony Suryo Utomo,Jin Zhenhua,ChungSeub Yi,Hyo Min Jeong,Han Shik Chung 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-
A CFD investigation on hydrodynamics characteristics of gas liquid ejector has been carried out to study the influence of gas liquid flow rates ratio on the performance and on the mass transfer characteristic of ejector. In this study, the ejector design was modeled using finite volume CFD techniques to resolve the flow dynamics in the ejectors. The CFD results were validated with available experimental data. Flow field analyses and predictions of ejector performance were also carried out. During validation, although there is a discrepancy between CFD and experimental results, however it has a good agreement in the trend of phenomena respect to experimental results. From the present analysis, it can be concluded that the efficiency of the ejector increases with respect to gas liquid flow rates ratio. It also can be seen that the volumetric mass transfer coefficient is higher when the gas flow rate increased.
Design analysis of a bubble pump on diffusion absorption refrigeration system
Tony suryo Utomo,Hyo Min Jeong(정효민),Han Shik Chung(정한식) 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-
An analytical study of a bubble pump has been done in this research with theoretical approach to investigate the performance of the bubble pump. The bubble pump was used in the absorption refrigeration system with ammonia-water-hydrogen as the working fluid. Bubble pump tube diameter, submergence ratio, heat input are varied to analyze the bubble pump performance. The results indicate that the efficiency is practically independent of the heat input and nearly independent of diameter, but increases with increase in submergence ratio. The pumping ratio is practically independent of heat input, but increases with decrease in bubble pump tube diameter and increase in submergence ratio. The liquid mass flow rate depends on heat input and submergence ratio, but it is practically independent of the bubble pump diameter.
Tony Suryo Utomo,Jin Zhenhua,ChungSeub Yi,Hyo Min Jeong,Han Shik Chung 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
An investigation on hydrodynamics characteristics of gas liquid ejector has been carried out using to study the influence of gas liquid flow rates ratio on the performance and on the mass transfer characteristic of ejector. In this study, the ejector design was modeled using finite volume CFD techniques to resolve the flow dynamics in the ejectors. The CFD results were validated with available experimental data. Flow field analyses and predictions of ejector performance were also carried out. During validation, although there is a discrepancy between CFD and experimental results, however it has a good agreement in the trend of phenomena respect to experimental results. From the present analysis, it can be concluded that the efficiency of the ejector increases with respect to gas liquid flow rates ratio. It also can be seen that the volumetric mass transfer coefficient is higher when the gas flow rate increased.
A Study of Mixing System Using Gas-Liquid Ejector
ZhenHua Jin,YouSin Jun,Tony Suryo Utomo,XueSong Li,HanShik Chung,HyoMin Jeong 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-
A literature review has been carried out on reactor using gas-liquid ejector. The aim of this paper is further studies to achieve deeper understanding in this field. First to investigate the influence of operating conditions and design parameters on the hydrodynamics and the mass transfer properties of a loop reactor. This paper provides a literature review on the ejectors applications in the mixing system. A number of studies are grouped and discussed in several topics. Such as the background, theory of ejector, mixing characteristics, optimization of the system. Since the high efficiencies reactor using ejector widely used in gas-liquid system, especially in a number of chemical and biochemical processes. This is due to their high efficiency in gas dispersion resulting in high mass transfer rate and low power requirements. Circulation and gas dispersion are achieved when the liquid is injected into the reactors with high velocity which entrain the gas phase and create a fine dispersion of the two phases. Thus ejector has been applied to the mixing system.