Operational Process and Characteristics of Liquid-gas Jet Pumps with the Ejected Vapor-gas Medium

Ismagilov, A.R.; Spiridonov, E. K.

doi:10.1016/j.proeng.2016.06.756

Cited by 7 publications

(2 citation statements)

References 1 publication

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“…One of its primary objectives is to maximize the air intake while minimizing the swirl number. By incorporating the existing liquid-gas ejector water intake and suction technology, the objective is to address issues such as excessive fluid swirling and inadequate air intake at the outlet of the cleaning spray bar [19][20][21]. The CFD technique was used to simulate and analyze the swirl number of outlet mixed fluid, the inlet volume, and the specific flow conditions in the flow channel for each model.…”

Section: Introductionmentioning

confidence: 99%

Flow Channel Optimization to Improve the Performance of a Liquid–Gas Ejector for an Intelligent Toilet Spray Bar

Zhou,

Zhu,

Yang

et al. 2023

Atmosphere

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Intelligent toilets can effectively remove odors and harmful substances from exhaust gases and wastewater, maintaining a fresh and clean indoor atmosphere, which is beneficial to the indoor environment and human health. Currently, research on intelligent toilets conducted by sanitary ware manufacturers is still in its early stages. Many of the intelligent toilets available on the market exhibit issues such as an excessive oscillation amplitude of the cleaning spray bar, premature breakdown of the water column, and inadequate air intake. The present study involves the analysis and redesign of a cleaning spray bar model for intelligent toilets. Additionally, several optimization schemes concerning the flow channel of the cleaning spray bar are proposed in order to enhance the performance of the liquid–air ejector. The computational fluid dynamics (CFD) technique is utilized to analyze the water flow characteristics within the cleaning spray bar of the intelligent toilet and to compare and evaluate the proposed schemes. The calculation results indicate that, for the same inlet flow rate, the optimal structure the block with a length of L = 1.5 mm and the block positioned (4). The swirl numbers of these two optimized models are 14.8% and 8.3% of the protype, respectively, while their air intake is 133% and 131% of the protype, respectively. The optimized solutions exhibited significant performance improvements when compared to the prototype. The computational results offer valuable insights for optimizing the flow characteristics of the enhanced product.

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Section: Introductionmentioning

confidence: 99%

Flow Channel Optimization to Improve the Performance of a Liquid–Gas Ejector for an Intelligent Toilet Spray Bar

Zhou,

Zhu,

Yang

et al. 2023

Atmosphere

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“…Further spread of borehole jet pumps is limited by their low energy efficiency: the efficiency of an ejection system, as a rule, does not exceed 35% [5][6][7][8]. The need to improve the energy efficiency of borehole jet pumps is of particular relevance in the implementation of long-term technological operations and, in particular, in the operation of oil wells.…”

Section: Introductionmentioning

confidence: 99%

Study on Characteristics of a Downhole Vortex Jet Pump

Panevnyk¹

2021

JPGT

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This article analyzes the possibility of increasing the efficiency of using downhole jet pumps by swirling the injected flow. To analyze the peculiarities of the local swirling of injected flow, design and technological parameters in the form of the inclination angle of guiding elements, the diameter of the helical trajectory described by the fluid particles, and the flow rates of the swirling flow are studied. Based on the application of the conservation law of fluid momentum in adjacent jets with a parabolic pressure distribution, equations to determine the pressure characteristic of a jet pump are obtained, taking into account the additional dynamic pressure made by swirling the injected flow. In the process of analyzing the obtained relations, has been set the dependence of the relative pressure growth and the efficiency of the ejection system under the conditions of injected flow swirling on the relative flow rate of a jet pump, and an inversely proportional dependence of the above parameters on its main geometric parameter in the form of the ratio of cross-sectional areas of the mixing chamber and the nozzle.

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Development of governing equations for mixing shocks in two-phase flows

Mollakouchakian,

Emami

2023

Shock Waves

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Operational Process and Characteristics of Liquid-gas Jet Pumps with the Ejected Vapor-gas Medium

Cited by 7 publications

References 1 publication

Flow Channel Optimization to Improve the Performance of a Liquid–Gas Ejector for an Intelligent Toilet Spray Bar

Flow Channel Optimization to Improve the Performance of a Liquid–Gas Ejector for an Intelligent Toilet Spray Bar

Study on Characteristics of a Downhole Vortex Jet Pump

Development of governing equations for mixing shocks in two-phase flows

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