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All Journal FLYWHEEL : Jurnal Teknik Mesin Untirta
Saleh, Arif Rahman
Tidar University
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Experimental Study of the Effect of Air Flow Rate Variation on the Three-Phase Flow Characteristics in the Uplift Section of an Airlift Pump Rahayu, Yunita; Mujiarto, Sigit; Fajarningrum, Nurmala Dyah; Saleh, Arif Rahman
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 11, No 2 (2025): October
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v11i2.35139

Abstract

A three-phase airlift pump is a pumping system that utilizes compressed air to lift fluid and solid particles, widely used due to its efficiency and minimal mechanical components. The injected air flow rate plays a crucial role in influencing the flow pattern, velocity, and phase distribution within the system. This study aims to examine the effect of varying air flow rates on the three-phase flow characteristics in an airlift pump with a 15° injector angle, including the critical condition, superficial velocity of each phase, flow patterns, and changes in solid, gas, and liquid hold-up values. Experiments were conducted with air flow rates ranging from 30 to 60 LPM and a water column height of ¾ h. Data were analyzed using image processing techniques to calculate flow velocity and hold-up. Based on the experimental results, it was found that the solid hold-up increased from 0.7592 to 0.9030, and gas hold-up from 0.0531 to 0.0819, while liquid hold-up decreased from 0.1877 to 0.0151 as the air flow rate increased. The superficial liquid velocity also rose from 0.056 m/s to 0.158 m/s, with the value recorded at 50 LPM representing the most optimal operating condition of the airlift pump and serving as the ideal reference for system operation. This research is expected to contribute to the development of airlift pump applications in industrial applications..
Experimental Study on the Effect of Air Flow Rate Variation on the Performance of a Three-Phase Airlift Pump With an Injector Angle of 15° Maulana, Rizki; Fajarningrum, Nurmala Dyah; Hayati, Nur; Saleh, Arif Rahman
FLYWHEEL : Jurnal Teknik Mesin Untirta Vol 11, No 2 (2025): October
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/fwl.v11i2.35498

Abstract

Rivers in Indonesia are heavily polluted, with the main source of pollution coming from industrial waste, including poorly managed mining activities. The airlift pump is used to lift liquid or sediment from a water reservoir that has a lower elevation through a vertical pipe that is partially submerged in the water. This research aims to determine the effect of air flow rate on the performance of the airlift pump during operation under three-phase flow conditions. The performance of the airlift pump is examined through several parameters: superficial velocity, effectiveness, efficiency, and flow patterns. In this study, a tank measuring 50x50x50 cm and a 2.54 m tall acrylic pipe are used as the riser to facilitate the lifting of three-phase flow to the separator component that separates the three phases located at the end of the riser. With a submergence ratio of ¾ h or 1.905 m and using variations of air flow rates of 30, 40, 50, and 60 LPM. The results of this research confirm that increasing air flow rate enhances superficial velocity in all three phases. At air flow rates of 30-50 LPM, the efficiency increases from 4.18 ×10-3 % and peaks at 5.14 ×10-3 %. At 60 LPM, it decreases to 4.88 ×10-3 %. The highest effectiveness reaches 1.281 at an air flow rate of 60 LPM. The optimal flow pattern occurs in slug flow and transitions towards churn flow.
Co-Authors Fajarningrum, Nurmala Dyah Maulana, Rizki Mujiarto, Sigit Nur Hayati Rahayu, Yunita