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Studi Eksperimental Karakteristik Pressure Drop Aliran Dua Fase Air – Udara pada Elbowmiter Drajat Indah Mawarni; Eko Sutarto; Muksan Junaidi
SIMETRIS Vol 17 No 1 (2023): Simetris (Issue is on the progress)
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51901/simetris.v17i1.333

Abstract

This study aims to determine the effect of a broken bend (miter elbow) on the pressure drop of two-phase flow. The use of elbows in piping systems is very common because it meets the needs of the design and geometry of the piping system. The test device used an acrylic pipe with an inside diameter of 32 mm in a vertical position, connected to a 45o elbow miter and continued with a pipe with a 45o slope. Water and air are used as working fluids. The tests were carried out with variations in the superficial velocity of the liquid (USL) from 0.30-0.50 m/s and the volumetric quality of air (β) = 0.06-0.22. The flow pattern was documented with a digital camera and the pressure drop was measured using a U-type manometer. The results of the flow pattern with variations in the USL range of 0.30-0.50 m/s show a bubble flow pattern, as the USL value increases the concentration of bubbles tends to occupy the inner elbow. The pressure drop for two-phase flow decreases as the value of β in the flow increases, this is due to the decrease in the density value of the flow. The lowest pressure drop occurred at USL 0.30 m/s and β 0.22 which was 3628.591 N/m2, while the highest pressure drop occurred at USL 0.50 m/s and β 0.06 which was 3892.67 N/m2.
System Monitoring Calibration Oil and Gas Equipment at the Cepu Oil and Gas PPSDM Instrumentation Workshop Using Java Netbeans Muksan Junaidi; Nurul Saidah
JIIFKOM (Jurnal Ilmiah Informatika dan Komputer) Vol 1 No 2 (2022): July
Publisher : Jurusan Informatika STTR Cepu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51901/jiifkom.v1i2.238

Abstract

Information on calibration reports of oil and gas equipment at the Instrumentation Workshop at the Cepu Oil and Gas Human Resources Development Center (PPSDM Migas) is still not real time, and the filing of reports is still manual in a special cabinet. Often constrained in the process of searching for documents, and confusing information on repair status and recalibration schedule. The purpose of this study was to develop a Calibration Monitoring System for Oil and Gas Equipment at the Instrumentation Workshop at PPSDM Migas Cepu, to facilitate monitoring of the calibration process, search for data, reduce paper usage, and update information on equipment repair status. Research data from calibration reports in 2017 were 113 and in 2018 there were 79 reports. Using UML (Unified Modeling Language) modeling and Java Netbeans programming language. The results of the research are a monitoring system for equipment calibration at the Instrumentation workshop, and it has been tested functionally with blackbox testing, 97% successful in accordance with its function.