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All Journal Dinamika Teknik Mesin : Jurnal Keilmuan dan Terapan Teknik Mesin
Sutjahjono, H.
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Aerospace Engineering Automotive Engineering Mechanical Engineering Physics

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Pengaruh diameter lubang bubbles generator pada pengikatan karbon dioksida dengan larutan kalium hidroksida 4 molar Bachrudin, M.N.; Sutjahjono, H.; Ramadhan, M.E.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 8, No 2 (2018): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.769 KB) | DOI: 10.29303/dtm.v8i2.163

Abstract

Bubble generator is an alternative technology for bubble producers. One of many other functions of bubble generator is as a purification tool. Type of bubble generator that's used in this research is Jet Column bubble generator. The diameter of the bubble hole generator affects the length of bubble life, the length of the bubble trajectory, the bubble shape, and the purification process absorption of CO2. The methods used in the purification process are making a solution 4 KOH molar, making purification tool, installating the output holes, gas purification process and gas testing performed repeated three times in each test process. The output bubble generator hole diameters are 0.08 mm, 0.12 mm and 0.16 mm. The result shows that the greater the diameter of the bubble hole generator of 0.12 mm makes the length of bubble life shorter, the time is 1,77 s and for the smallest hole diameter of 0.08 mm makes the length of the bubble life af about 3.21 s. The hole diameter of 0.08 mm results in the length of bubble trajectory of 1554.289 mm that is  longer than that of the hole diameter of 0.16 mm. The smaller hole diameter produces bubbles with an average length of 6.441 mm and bubble diameter of 1.237 mm. CO2 gas content decreased from 26.8% to 0.00%, and levels of hydrocarbon content increased by 5540 ppm.
Uji variasi temperatur dan campuran bahan bakar terhadap karakteristik spray Rafdi, M.H.A.; Ilminnafik, N.; Djumhariyanto, D.; Setyawan, D.L.; Sutjahjono, H.; Sanata, A.; Hardiatama, I.
Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin Vol 12, No 1 (2022): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (874.853 KB) | DOI: 10.29303/dtm.v12i1.501

Abstract

The use of biodiesel fuel has a very high viscosity and density compared to diesel oil, this makes diesel engine performance less than optimal. With the addition of gasoline to biodiesel, it will reduce the viscosity and density of biodiesel and have a lower flash point. And also the fuel heating process aims to reduce the level of viscosity and density of the fuel so that it is the same as diesel oil. This study aims to know the spray characteristics of fuel B0 (100% diesel oil), B30 (30% biodiesel and 70% diesel oil) and B30G5 (95%B30 and 5% diesel oil) with temperature variations 60ºC, 80ºC, and 100ºC on injection pressure of 17 MPa. The results of the tests that have been carried out that the increase in temperature of the fuel and variations in injection pressure will affect the value of the spray tip penetration, and the spray area. The result of the spray characteristic test that produces a good value is B0 fuel (100% diesel) but the closest to the B0 fuel value is B30G5.
Pengaruh diameter lubang bubbles generator pada pengikatan karbon dioksida dengan larutan kalium hidroksida 4 molar Bachrudin, M.N.; Sutjahjono, H.; Ramadhan, M.E.
Dinamika Teknik Mesin Vol 8, No 2 (2018): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v8i2.163

Abstract

Bubble generator is an alternative technology for bubble producers. One of many other functions of bubble generator is as a purification tool. Type of bubble generator that's used in this research is Jet Column bubble generator. The diameter of the bubble hole generator affects the length of bubble life, the length of the bubble trajectory, the bubble shape, and the purification process absorption of CO2. The methods used in the purification process are making a solution 4 KOH molar, making purification tool, installating the output holes, gas purification process and gas testing performed repeated three times in each test process. The output bubble generator hole diameters are 0.08 mm, 0.12 mm and 0.16 mm. The result shows that the greater the diameter of the bubble hole generator of 0.12 mm makes the length of bubble life shorter, the time is 1,77 s and for the smallest hole diameter of 0.08 mm makes the length of the bubble life af about 3.21 s. The hole diameter of 0.08 mm results in the length of bubble trajectory of 1554.289 mm that is  longer than that of the hole diameter of 0.16 mm. The smaller hole diameter produces bubbles with an average length of 6.441 mm and bubble diameter of 1.237 mm. CO2 gas content decreased from 26.8% to 0.00%, and levels of hydrocarbon content increased by 5540 ppm.
Co-Authors Bachrudin, M.N. Djumhariyanto, D. Hardiatama, I. Ilminnafik, N. Rafdi, M.H.A. Ramadhan, M.E. Sanata, A. Setyawan, D.L.