Two-phase Flow Behaviour in Airlift Pumps

Abed, Rashal; Chadwick, Eric; Ahmed, Wael H.

doi:10.11159/ffhmt18.168

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…Air-lift-pump merupakan pompa yang bekerja dengan bantuan udara yang bertekanan dalam memompa sebuah cairan dengan kekentalan yang tinggi [5]. Sistem kerjanya yaitu menginjeksikan udara pada ujung bawah pipa, dengan demikian membuat berat hidrostatik antara udara dan air didalam pipa akan jauh lebih kecil diantara udara sekitarnya [6].…”

Section: Pendahuluanunclassified

Effect of Air Flow Rate on Air-Lift- Pump

Salim

Susanto

Sugati

et al. 2022

Journal Technology of Civil, Electrical, Mechanical, Geology, M

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Air-lift-pump merupakan suatu rangkaian alat yang digunakan untuk memindahkan air dan air campuran (berlumpur) dari suatu tempat ke titik yang lain. Sistem kerja air-lift-pump melalui media pipa dengan cara menginjeksi udara pada saluran bawah pipa yang terendam. Tekanan udara dari aerator akan mendorong air bergerak ke atas menuju arah yang sama melewati pipa. Cairan kental atau lumpur dapat dinaikan menggunakan air-lift-pump. Gaya apung dari udara dapat menyebapkan berat hidrostatik cairan menjadi lebih kecil karena udara yang digunakan pada air-lift-pump di injeksikan pada bawah pipa. Penelitian ini menggunakan metode eksperimen dengan mevariasikan rasio debit udara dan menggunakan injektor udara yang terletak di dinding pipa. Tujuan dari penelitian untuk mengetahui pengaruh variasi rasio debit injeksi terhadap kinerja pompa untuk ukuran diameter lubang injektor dan menemukan efisiensi terbaik dari setiap variasi yang dilakukan. Pengujian dilakukan dengan 3 pipa injector yang berbeda yaitu 0,80 mm, 0,54 mm, 0,31 mm. Hasil penelitian menunjukan bahwa variasi rasio debit udara sangat berpengaruh terhadap efisiensi dan laju aliran air. Efisiensi terbaik terjadi pada injector dengan diameter 0,8 mm sebesar 4,1 % dan efisiensi terendah terjadi pada injector dengan diameter 0,31 mm sebesar 1,3%. Variasi debit udara dengan nilai yang semakin besar maka nilai efisiensinya akan menurun. Pada laju aliran air juga mengalami perubahan karena semakin besar debit udara yang diberikan maka nilai laju aliran air juga akan semakin besar.

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Section: Pendahuluanunclassified

Effect of Air Flow Rate on Air-Lift- Pump

Salim

Susanto

Sugati

et al. 2022

Journal Technology of Civil, Electrical, Mechanical, Geology, M

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“…The pump consists of a vertical riser pipe and an air injector; the injector is often installed at or near the bottom of the riser pipe. The action of the pump is based on changing the density of the liquid inside the riser pipe by injecting compressed air (Abed et al 2018). Then the drag force between the formed air bubbles and the water helps the liquid phase to move upwards (Pougatch and Salcudean 2008).…”

Section: Introductionmentioning

confidence: 99%

Experimental Evaluation of Airlift Performance for Vertical Pumping of Water in Underground Mines

2021

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This paper presents experimental studies on the optimization of air–water flow in an airlift pump. Airlift pumps use compressed gas to verticall transport liquids and slurries. Due to the lack of theoretical equations for designing and predicting flow regimes, experimental investigations must be carried out to find the best condition to operate an airlift pump at high efficiency. We used a new air injection system and different submergence ratios to evaluate the output of a simple pump for vertical displacement of water in an underground mine. The tests were carried out in a new device with 5.64 m height and 10.2 cm circular riser pipe. Three air-jacket pipes, at different gas flows in the range of 0.002–0.09 m3/s were investigated with eight submergence ratios. It was found that with the same air flow rate, the most efficient flow of water was achieved when an air jacket with 3 mm diameter holes was used with a submergence ratio between 0.6 and 0.75. In addition, a comparison of practical results with two theoretical models proposed by other investigators showed that neither was able to accurately predict airlift performance in air–water flow mode.

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“…It will occur until the peak value, and then it will slowly decrease. 2,11–17 The trend curve is caused by the increase of the air flow rate, then the fluid velocity in the riser increases. It will affect the increase of wall friction losses.…”

Section: Introductionmentioning

confidence: 99%

The performance of airlift pump for the solid particles lifting during the transportation of gas-liquid-solid three-phase flow: A comprehensive research review

Catrawedarma¹,

Deendarlianto²,

Indarto³

2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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Research about the enhancement of the airlift pump performance by changing the geometry and operational parameters has drawn considerable attention in recent years. This paper presents a comprehensive review of some published research articles on the enhancement performance of the airlift pump and the future direction of the research. In the introductory section, the description, the application, and the performance of the airlift pump are described. The influencing parameters of the airlift pump performance are classified in the geometry and operational. The geometry parameters are including submergence ratio, pipe diameter, pipe length, design, and position of the injector. The operational parameters are including the testing fluid, diameter and density particles, and the superficial velocity of injected air. All of the involved parameters are detail explained in the experimental study section. The detailed derivation of equations of the airlift pump performance and also the modified equation was shown in the theoretical study section. The numerical study of airlift pump operating on two and three phases was also discussed. In the last section, the future directions of the airlift pump are noted, and some conclusions were summarized. It was found that only limited literature about flow patterns in terms of the dynamic interface of each phase and development bubble jet generator airlift pump. Therefore, experimental data are needed to support this effort. Additional work, both theoretical and experimental, needs to be conducted on the effects of type and position bubble jet generators on the flow characteristic and the airlift pump performance, with the hope that the better performance will be obtained.

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Two-phase Flow Behaviour in Airlift Pumps

Cited by 10 publications

References 4 publications

Effect of Air Flow Rate on Air-Lift- Pump

Effect of Air Flow Rate on Air-Lift- Pump

Experimental Evaluation of Airlift Performance for Vertical Pumping of Water in Underground Mines

The performance of airlift pump for the solid particles lifting during the transportation of gas-liquid-solid three-phase flow: A comprehensive research review

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