The effect of air injection system on airlift pump performance

Fayyadh, Ekhlas M.; Mahdi, Nibras M.; Mohammed, Ali Falah

doi:10.5937/fme2004800f

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…Pada penelitian sebelumnya debit air dan efisiensi yang dihasilkan airlift pump cukup rendah [13]. Upaya memperbaiki efisiensi air-lift-pump harus dilakukan modifikasi pada sistem perpipaan dan mengatur kapasitas aliran udara yang akan diinjeksikan [14]. Variasi yang digunakan yaitu variasi rasio debit udara.…”

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 results show that the flow rate of the lift water is the same as the flow rate of the lift slurry when the air intake is high. Fayyadh (Fayyadh et al, 2020) performed an experimental study on the performance of the air-lifting pump under different air intake and submerged rates. The results show that both the air intake and submerged rate will have a significant impact on the performance of the air-lifting pump.…”

Section: Introductionmentioning

confidence: 99%

Effect of construction technology on air-lifting pump mining

et al. 2023

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The air-lifting pump has the advantages of low cost, strong reliability, simple structure and convenient maintenance, especially in the fields of deep-sea mining, oilfield mining and mineral mining under complex geological conditions. The construction technology and air intake mode not only play a decisive role in the performance of the air-lifting pump, but also greatly hinder the engineering application of the air-lifting pump. Here, the air-lifting pump is taken as the research object, and the river sand is used as the experimental transport medium. The particle concentration-efficiency model is established based on the mechanical energy conservation theorem. The working performance characteristic parameters of the air-lifting pump under different construction technologies are obtained by a three-axis motion control system. On this basis, the working performance characteristic parameters of the air-lifting pump under different intake modes are obtained by changing the intake mode. The results show that the particle concentration-efficiency model can well describe the efficiency of lifting solid particles by the air-lifting pump. When the sand depth is less than 200 mm, the concentration and efficiency of solid particles transported by the air-lifting pump in the horizontal movement construction are significantly better than those in the fixed position construction. In the same construction technology, the solid particle concentration of the air-lifting pump in uniform intake mode is better than that in non-uniform intake mode, while the transportation efficiency of the air-lifting pump in non-uniform intake mode is better than that in uniform intake mode. The research results of this paper can provide an important theoretical reference value for the air-lifting pump in practical engineering applications.

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“…According to the literature, the pump performance is flow pattern dependent. That is, depending on the geometrical design, bubbly-slug transition [7], slug flow pattern [2] or slug-churn transition [8], [9] has been observed to give the highest efficiency, while slug-churn/churn flow patterns have been seen to result in the highest performance (i.e., increased liquid flow rate) [4]. Majority of the conducted studies have concentrated on the impact of operating and geometrical parameters on airlift pumps performance.…”

Section: Introductionmentioning

confidence: 99%

Airlift Pumps with Annulus Risers: An Experimental Investigation

Holagh¹,

Fadlalla²,

Taha³

et al. 2023

World Congress on Momentum, Heat and Mass Transfer

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Airlift pumps are used in many industries. In these pumps, the performance is strongly affected by the geometrical design conditions. In this study, the performance of an airlift pump is experimentally evaluated for both circular and annulus pump risers. An airlift pump operating under air-water two-phase flow conditions was tested using a dual pump injector and for a constant submergence ratio. Capacitance sensors are used to measure the instantaneous void fraction through the pump riser, while high-speed images are analyzed to identify the interfacial structures of the air-water two-phase flow patterns through the pump risers. The results show that the water flow rate and efficiency of the pump for both risers are strongly dependent on the flow-pattern. In the annulus riser, higher liquid flow rates and pump efficiency are achieved at low gas flow rates, where slug pattern exists, while for the circular riser, the pump performs better at higher gas flow rates. Also, void fraction was found to be higher in the annulus riser for the entire range of gas flow rate due to the smaller cross-sectional area and the faster gas phase velocity through this area. Moreover, in the annulus riser, the Taylor bubble exhibited rotational motion around the pipe axis while moving upward. The length of Taylor bubbles in the pump riser was found to be longer and move with higher velocity and frequency in the case of the annulus riser, which is contributing to the better pump performance at low air flow rates.

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The effect of air injection system on airlift pump performance

Cited by 6 publications

References 15 publications

Effect of Air Flow Rate on Air-Lift- Pump

Effect of Air Flow Rate on Air-Lift- Pump

Effect of construction technology on air-lifting pump mining

Airlift Pumps with Annulus Risers: An Experimental Investigation

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