Kaji Eksprimental Pengaruh Debit Fluida Terhadap Kerugian Tekanan Yang Dihasilkan Oleh Alat Pembangkit Gelembung Berukuran Mikron

Abstract

Microbubble Generator (MBG) is a tool that can produce micro-sized air/gas bubbles. This tool has begun to be widely used for aeration in fishery ponds or waste processing ponds, because it can increase the oxygen content dissolved in the water. This research is experimental by examining the performance of the Swirl Type Microbubble Generator by calculating pressure drop, hydraulic power, efficiency and visual observation. This experiment was carried out by varying the water discharge from 24, 32 and 40 Lpm. Meanwhile, the air flow is from 0.1 to 0.8 Lpm with an increase of 0.1 Lpm. To see the size and distribution of microbubbles, visualization of the flow as it exits the MBG has been carried out using a Canon 1200D camera. Meanwhile, measuring the pressure drop using a pressure transducer sensor, the data is recorded by Arduino UNO which is connected to Microsoft Excel. The research results show that the pressure drop tends to increase along with the increase in (QL) and air flow (QG) entering the microbubble generator system. Hydraulic power tends to increase along with increasing water discharge (QL) values. Meanwhile, the resulting efficiency decreases with increasing (QL). There is a strong correlation between the air flow and pressure drop inside the MBG and the number and size of the bubbles produced.