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All Journal Rekayasa Mesin Journal of Mechanical Engineering Science and Technology Turbo : Jurnal Program Studi Teknik Mesin Jurnal Karinov Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Jurnal Pengabdian, Pendidikan dan Teknologi Jurnal Pengabdian Masyarakat Biologi dan Sains Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS)
Prihanto Trihutomo
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Journal : Rekayasa Mesin

 1 
Pengaruh Volume Alir Udara terhadap Pola Sebaran Gelembung pada Bubble Plume Trihutomo, Prihanto
Jurnal Rekayasa Mesin Vol 6, No 2 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (435.228 KB) | DOI: 10.21776/ub.jrm.2015.006.02.6

Abstract

Bubble plume is the effective way to generate bubbles by air injection from the bottom of bath. Bubble plumes is important for gas transfer process, turbulence generation, collecting the surface-floating substance, and also important to mixing effect in chemical process. This research aims to analyse effect of gas flowrate on bubble dispersion pattern in bubble plume. An experimental apparatus to investigating bubble dispersion consists of a transparent vertical bath is 500 mm length, 24 mm wide and 750 mm height. The bubble generator consists of 110 needles, each needle is 0.25 mm in diameter, installed at the bottom of bath. The experimental method was used in this research. Data were taken by high resolution digital camera. Bubble dispersion pattern was generated by air injection from the bottom of bath. The experiments was done at various gas flowrate that is 4.16 x 10-6m3/s, 6.67 x 10-6m3/s,  10.4 x 10-6m3/s, 18.83 x 10-6m3/s dan 31.6 x 10-6m3/det. Data analyse using ImageJ software to get number, dimension and position of bubble. The experimental results show that increase of gas flowrate causes the number and the diameter of bubble increase and also to widen of diameter interval and bubble dispersion. In each of gas flowrate the bubble trend coalescence intermittently. The intermittent coalescence decrease with the increase of gas flowrate.
PENINGKATAN EFISIENSI DAN STABILITAS DYE SENSITIZED SOLAR CELL (DSSC) ORGANIK DENGAN ELEKTROLIT POLYETHYLENE GLYCOL Trihutomo, Prihanto; Sholihin, Mohammad Riyadhu
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1637

Abstract

This research will discuss the use of PEG with variations in molecular weight on the stability and efficiency of DSSC. Variations in the molecular weight of PEG used were 4000, 6000 and 10000 which were added to electrolytes containing iodine and potassium iodide using ethanol Pro Analyst as a solvent, then each electrolyte sample was tested for functional groups. Efficiency testing is carried out after the DSSC assembly is complete. Stability testing is carried out by repeated efficiency tests every 5 days after the first efficiency test and is carried out until the third test. The results of the FTIR functional group test showed that there were differences between the electrolyte samples without PEG and the electrolyte samples with PEG addition, but the PEG samples with different molecular weights showed identical functional group readings. The efficiency test results show that the use of PEG increases the efficiency of DSSC compared to DSSC without PEG where the DSSC sample with the lowest PEG molecular weight has the highest efficiency due to the low crystallinity of the polymeric material with low molecular weight thereby increasing ionic conductivity which affects the efficiency increase. The results of the stability test showed that the use of PEG could increase the stability of DSSC where the highest resistance was found in the DSSC with the lowest molecular weight PEG because of its low crystallinity which keeps its ionic conductivity high without being degraded so that efficiency can be maintained.
PENINGKATAN EFISIENSI DAN STABILITAS DYE SENSITIZED SOLAR CELL (DSSC) ORGANIK DENGAN ELEKTROLIT POLYETHYLENE GLYCOL Trihutomo, Prihanto; Sholihin, Mohammad Riyadhu
Jurnal Rekayasa Mesin Vol. 15 No. 3 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i3.1637

Abstract

This research will discuss the use of PEG with variations in molecular weight on the stability and efficiency of DSSC. Variations in the molecular weight of PEG used were 4000, 6000 and 10000 which were added to electrolytes containing iodine and potassium iodide using ethanol Pro Analyst as a solvent, then each electrolyte sample was tested for functional groups. Efficiency testing is carried out after the DSSC assembly is complete. Stability testing is carried out by repeated efficiency tests every 5 days after the first efficiency test and is carried out until the third test. The results of the FTIR functional group test showed that there were differences between the electrolyte samples without PEG and the electrolyte samples with PEG addition, but the PEG samples with different molecular weights showed identical functional group readings. The efficiency test results show that the use of PEG increases the efficiency of DSSC compared to DSSC without PEG where the DSSC sample with the lowest PEG molecular weight has the highest efficiency due to the low crystallinity of the polymeric material with low molecular weight thereby increasing ionic conductivity which affects the efficiency increase. The results of the stability test showed that the use of PEG could increase the stability of DSSC where the highest resistance was found in the DSSC with the lowest molecular weight PEG because of its low crystallinity which keeps its ionic conductivity high without being degraded so that efficiency can be maintained.
Co-Authors Andika Bagus Nur Rahma Putra, Andika Bagus Nur Rahma Andoko Andoko, Andoko Ariyanto, Sudirman Rizki Busono, Milzam Rahmat Dedi Tiarno Erwin Komara Mindarta Herlina Ike Oktaviani Janas, Dawid Makbul Muksar Marji Marji Mishima, Kenji Muchammad Harly Paryono Prasetya, Riduwan Pratama, Muhammad Yandi Radja, Muhammad Bustomi Retno Wulandari Rr. Poppy Puspitasari Sholihin, Mohammad Riyadhu Sumarli Sumarli Suprayitno Suprayitno