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M. Dyan Susila
Universitas Lampung
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Other

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Karakteristik Perpindahan Panas Alat Penukar Kalor Tipe Staggered Fins Berisi Material Fasa Berubah dari Minyak Kelapa pada Proses Pembekuan Irsyad, Muhammad; Amrizal, Amrizal; Yulian, Aji Muhammad; Susila, M. Dyan
Jurnal Rekayasa Mesin Vol 11, No 2 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.02.3

Abstract

Indonesia, located in the tropics, has a dependency on air conditioners to obtain the thermal comfort of the room. This phenomenon resulted in the electricity consumption of the building increased significantly. On the other hand, Indonesia has the potential for cold air at night that is in the range of the thermal comfort temperature of the room or lower. The potential for cold air can be exploited by using Phase Change Material (PCM). Coconut oils are commodities that are widely produced in Indonesia. These materials have good potential to be developed as PCM because they have high latent heat and the temperature of phase change matches the temperature of the cold air at night. This research used a staggered fins type heat exchanger with a total of 39 pieces, mounted zig zag with the number of lines was 11. Fins were made of hollow aluminium with a size of 1x0.5 inches with a height of 150 mm. The PCMs used were coconut oil with a mass of 1.5 kg. The temperature and velocity of entering cold air were 20oC, 1 m/s, 2 m/s and 3 m/s. This study aims to determine the ability of PCM to release thermal so that it undergoes phase changes. The results showed that low cold airflow velocity resulted in subcooling while at 3 m/s, subcooling did not occur. The most considerable cooling rate occurred at 3 m/s that was 0.16oC/min. The percentage of solid mass formed after 60 minutes for each velocity was 37.8%, 58%, and 76.2%. The most considerable amount of heat absorbed by air was 167.7 kJ. Based on this, coconut oils are very potential to be developed by observing the temperature and velocity of the enter cold air.
PELATIHAN PEMBUATAN POMPA TANPA MOTOR (HYDRAULIC RAM PUMP) UNTUK IRIGASI PERTANIAN MASYARAKAT PEKON TIGA JAYA KECAMATAN SEKINCAU LAMPUNG BARAT jorfri boike sinaga; M. Dyan Susila
Jurnal Pengabdian Kepada Masyarakat Sakai Sambayan Vol 5 No 3 (2021)
Publisher : Lembaga Penelitian dan Pengabdian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jss.v5i3.295

Abstract

Pada makalah ini diberikan kegiatan pelatihan pembuatan pompa tanpa motor (hydraulic ram pump) kepada masyarakat petani Pekon Tiga Jaya, Kecamatan Sekincau. Materi pelatihan yang diberikan secara teori dan praktek yaitu tentang prinsip kerja pompa tanpa motor, pemilihan bahan dan pembuatan pompa tanpa motor (hydram pump), pemasangan dan pengoperasian pompa di lapangan, dan perawatan pompa ini. Berdasarkan kegiatan pelatihan yang dilakukan, dapat dlihat bahwa antusias masyarakat mengikuti kegiatan ini sangat baik untuk memperoleh pemahaman pembuatan pompa tanpa motor (hydraulic ram pump). Hal ini terbukti dengan sikap masyarakat yang serius dan banyak mengajukan pertanyaan saat pelaksanaan pemberian materi teori dan praktek tentang pembuatan pompa tanpa motor (hydram pump). Hasil kegiatan ini juga meningkatkan keinginan masyarakat untuk mengaplikasikan penggunaan pompa ini dalam membantu irigasi pertanian mereka dengan menggunakan dana desa, dengan tetap meminta bantuan bimbingan dari tim pelaksana dari Fakultas Teknik Universitas Lampung.
Pengaruh Sudut Kontak Statis terhadap Penyebaran Droplet di Atas Permukaan Padat yang Dipanaskan pada Bilangan Weber Menengah M. Dyan Susila
JURNAL MECHANICAL Vol 1, No 1 (2010)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

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Abstract

The influence of static contact angle on the spreading of droplet on a heated solid surface has been studied experimentally. Static contact angle was important parameter which influenced the impact behavior and heat transfer during the interaction of droplet and solid surface. Droplet substance was destilated water with initial diameter of 2.5 mm and solid surface material was stainless steel. Impact energy was expressed in Weber number, they were 52.1 and 57.7. Solid surface temperature was varied from 60−285°C to cover the heat transfer regimes, they were single-phase liquid, nucleate boiling, transition boiling, and film boiling. Static contact angle were 0°, 35.04°, and 85.72°.           As result, it was known that static contact angle has influence on spread characteristic after droplet impacting solid surface. Spreading factor increases due to the decrease of static contact angle. Evaporation time decreases due to the decrease of static contact angle.Keywords: droplet, impact, spreading, static contact angle
KAJIAN EKSPERIMENTAL PENGARUH PANJANG CHORD SUDU TERHADAP UNJUK KERJA TURBIN HELIK UNTUK SISTEM PEMBANGKIT LISTRIK TENAGA MIKROHIDRO (PLTMH) Ahmad Rapa'i; Jorfri B Sinaga; M.Dyan Susila
Jurnal Ilmiah Teknik Mesin Vol 2, No 2 (2014): Jurnal FEMA Vol.2 No.2 Tanggal 10 April 2014
Publisher : Jurnal Ilmiah Teknik Mesin

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Abstract

All this time microhydro power plants (MHP) created a resource use of  water flow has high fall of water (head) while for areas that have stream of river but do not have high fall of water (head) still a lot of untapped but has potential hydrokinetic be able rotating turbine. This is what lies behind the research conducted to determine the effect of chord length on the performance of the helical turbine which is expected to come helical turbine performance as the optimum use of the potential hydrokinetic. Helical turbine tested had dimensions of 1.2 m high and 1 m in diameter, blade profile NACA 0030, chord length 15 cm, 20 cm and 25 cm with number of blades 3 pieces. Tests performed on the irrigation canals that open to varying water velocity of 0.52 m/s, 0.68 m/s and 0.8 m/s. From the test results obtained helical turbine performance as follows. The largest torque obtained in water velocity of 0.52 m/s, 0.68 m/s and 0.8 m/s is 3.89 Nm, 27.09 Nm and 39.38 Nm is the chord length of the turbine with 25cm and the smallest torque on the chord length of 15 cm of 2.31 Nm. Power largest turbine in the water velocity of 0.52 m/s, 0.68 m/s and 0.8 m/s is 7.12 Watt, 60.41Watt and 103.96 Watt, turbine that is on the chord length of 25 cm and the smallest turbine power chord length of 15 cm by 3.58 watts. Largest turbine efficiency at water velocity of 0.52 m/s, 0.68 m/s and 0.8 m/s is 8.44%, 32.02% and 33.84% in the turbine with a chord length of 25 cm and efficiency the smallest turbines on the chord length of 15 cm of 1,17%. Keywords : microhydro, water turbine, helical turbine, chord length, helical turbine performance
Pengaruh Penggunaan Tabung Induksi Terhadap Konsumsi Bahan Bakar Sepeda Motor Bensin 4 Langkah Junaidi Supratman; Herry Wardono; M.Dyan Susila
Jurnal Ilmiah Teknik Mesin Vol 1, No 3 (2013)
Publisher : Jurnal Ilmiah Teknik Mesin

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Abstract

YEIS tube (Yamaha Energy Induction System) has been able to enhance the performance of the motorcycle. Therefore, the use of induction tube on a 4-stroke motorcycle is expected to be able to increase the volumetric efficiency of the suction stroke, so that the power (acceleration) of the engine can increase at low speed. Tests of using induction tubein a 4-stroke motorcycle is required to observe the effect of the induction tube position on its performance and emission.the engine performance tests were carried out in road tests at an average speed of 40 kph. It was conducted before and after using the induction tube, and the induction tube mountings on intake manifold were varied at positions of JS150 (15 mm from intake manifold), JS 375 (37,5 mm), and JS600 (600 mm). Each type of test was performed 3 times to get it’s average.From the results, it was found that the fuel consumption of the motorcycle could maximally reduce by 27.8% in mounting JS150 and the lowest engine consumption by 0.98% in mounting the intake manifold JS 600. The best result occurred in mounting of JS150 for all tests. JS150 is the optimal position. This due to JS150 is the closest position from intake manifold and the most farthest position from carburettor. Therefore, at mounting of JS150,  residual air and fuel mixture can be fully drawn into both the line and tube of the induction tube. In contrast,JS600 is the farthest position from intake manifold, so that the residual air and fuel mixture cannot fully be drawn into the line and tube of the induction tube, the mixture is partially drawn into carburettor and induction tube, as in branched pipe system.Keywords : induction tube, petrol engine performance, YEIS.
PENGARUH VARIASI JENIS AIR DAN TEMPERATUR AKTIVASI DALAM CAMPURAN FLY ASH BENTUK PELET TERHADAP PRESTASI MESIN DAN EMISI GAS BUANG SEPEDA MOTOR BENSIN 4 LANGKAH Bagus Rachmad Akbar; Herry Wardono; M.Dyan Susila
Jurnal Ilmiah Teknik Mesin Vol 2, No 1 (2014)
Publisher : Jurnal Ilmiah Teknik Mesin

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Abstract

Meningkatnya jumlah kendaraan bermotor yang masih menggunakan bahan bakar fosil sebagai bahan bakar utama, menyebabkan cadangan bahan bakar fosil semakin menipis. Dengan kondisi seperti ini pemerintah telah mengurangi subsidi bahan bakar dan berencana menerapkan pembatasan pemakaian bahan bakar pada kendaraan bermotor. Fly ash batu bara dapat dimanfaatkan untuk menagtasi hal di atas. Pengujian fly ash ini dilakukan dengan beberapa variasi yaitu pengujian konsumsi bahan bakar, akselerasi, dan emisi gas buang. Konsumsi bahan bakar dilakukan dengan road test (pada kecepatan rata-rata 50 km/jam menempuh jarak 5 km) dan stasioner (pada putaran mesin 8500). Pengujian akselerasi dilakukan pada0-120 km/jam, serta pengujian emisi gas buang pada putaran 1500 dan 8500 rpm. Pelet fly ash yang dibentuk menjadi pelet berdiameter 10 mm dan tebal 3 mm dengan beragam variasi air(air mineral, aquadesh, dan air sumur bor), juga variasi temperatur dan waktu aktivasi fisik (2000 C, 1500 C selama 1 jam dan 2000 C, 1500 C  selama 2 jam).Pelet fly ashtersebut dikemas dalam suatu frame dan diletakkan di dalam saringan udara kendaraan uji sepeda motor yamaha vixion 150 cc. Sehingga sebelum udara masuk ke dalam ruang pembakaran, udara terlebih dahulu terhambat dengan pellet fly ash.Dalam penelitian ini, terbukti pelet fly ash mampu menghemat konsumsi bahan bakar hingga 28,8% pada  road test, dan sebesar 25,5% pada pengujian stasioner. Akselerasi meningkat sebesar 7,3%.Disamping itu, filter pelet fly ashbatubara mampu mengurangi kadar CO hingga sebesar 26,7% pada putaran 1500 rpm dan 45,5% pada putaran 8500 rpm, mengurangi kadar HC hingga sebesar 34,8% pada putaran 1500 rpm dan 30,4% pada putaran 8500 rpm. Kata kunci : Prestasi motor bensin 4 langkah, fly ash batubara, adsorben pelet fly ash.
STUDI KOMPARASI DARI ZAT ADITIF SINTETIK DENGAN ZAT ADITIF ALAMI TERHADAP PEMAKAIAN BAHAN BAKAR DAN EMISI GAS BUANG PADA MESIN GENSET MOTOR BENSIN 4-LANGKAH . Maindra; . Harmen; M.Dyan Susila
Jurnal Ilmiah Teknik Mesin Vol 2, No 1 (2014)
Publisher : Jurnal Ilmiah Teknik Mesin

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Abstract

Kebutuhan listrik yang terus meningkat dan belum diiringi dengan peningkatan pasokan listrik dari PLN (Perusahaan Listrik Negara) sehingga sering terjadi pemadaman listrik. Masyarakat yang menggunakan listrik dari PLN mencari alternatif lain dengan menggunakan genset sebagai sumber pembangkit listrik sementara. Pada umumnya penggunaan genset digunakan untuk memenuhi kebutuhan listrik rumah tangga, kantor dan toko-toko. Mesin genset umumnya menggunakan bahan bakar bensin. Dengan kenaikan harga bahan bakar minyak saat ini, biaya operasional genset menjadi meningkat. Untuk mengatasi hal ini sekarang sudah tersedia jenis zat aditif sintetik dan zat aditif alami. Dengan penambahan zat aditif  pada bahan bakar (bensin) dapat meningkatkan angka oktan dan kualitas dari bahan bakar sehingga didapatkan pembakaran yang sempurna. Untuk itu penelitian ini bertujuan untuk mengetahui pengaruh dari pemakaian zat aditif sintetik dengan zat aditif alami  terhadap pemakaian bahan bakar dan emisi gas buang pada genset. Untuk itu dilakukanlah serangkaian pengujian, pada pengujian ini menggunakan mesin genset CAMARO 4-langkah berbahan bakar bensin. Variasi pada pengujian  ini meliputi pengujian konsumsi bahan bakar tanpa zat aditif, dengan zat aditif sintetik dan  dengan zat aditif alami untuk tanpa beban dan dengan beban 700 watt. Variasi waktu yang digunakan dalam penelitian yaitu selama 10 menit, 20 menit dan 30 menit. Zat aditif yang digunakan dalam penelitian ini yaitu jenis zat aditif sintetik dengan perbandingan 1 (satu) pil/tablet untuk 4 liter bensin premium (1:4) dan untuk jenis zat aditif alami dengan perbandingan 1 (satu) pil/tablet untuk 30 liter bensin premium (1:30). Pada pengujian emisi gas buang bertujuan untuk mengetahui kandungan kadar gas CO, HC dan CO  yang dihasilkan mesin genset.Dari penelitian ini, didapat penurunan konsumsi bahan bakar terbaik yaitu pada kondisi tanpa beban dengan zat aditif sintetik sebesar 15,66 % dan pada beban 700 watt sebesar 16,99 %. Tegangan listrik yang dihasilkan mesin genset sebesar 181,106 volt dan nyala lampu yang dihasilkan tidak seterang dengan nyala lampu dari PLN yang tegangan listriknya sebesar 220 volt. Untuk penurunan kadar gas CO terbaik yaitu dengan menggunakan zat aditif alami pada kondisi tanpa beban sebesar 5,35 % dan pada beban 700 watt sebesar 9,06 %, untuk penurunan kadar gas HC terbaik yaitu dengan menggunakan zat aditif sintetik pada kondisi tanpa beban sebesar 344 ppm dan pada beban 700 watt sebesar 585 ppm, untuk peningkatan kadar gas CO  terbaik yaitu dengan menggunakan zat aditif alami pada kondisi dengan beban 700 watt sebesar 6,3 %. Untuk prestasi terbaik pada penggunaan zat aditif sintetik pada kondisi tanpa beban sebesar 15,66 % dan pada beban 700 watt sebesar 16,99 %. Untuk perbandingan biaya bahan bakar lebih murah menggunakan zat aditif sintetik untuk 1 (satu) liter bahan bakar pada kondisi tanpa beban biaya yang dihabiskan sebesar Rp. 6.645,- dan mesin genset dapat beroperasi  selama 2,9 jam, untuk 1 (satu) liter bahan bakar pada kondisi dengan beban 700 watt biaya yang dihabiskan sebesar Rp. 6.645,- dan mesin genset dapat beroperasi selama 1,3 jam. Kata Kunci : Mesin genset, zat aditif sintetik, zat aditif alami, konsumsi bahan bakar, emisi gas buang, biaya bahan bakar.
PENGARUH PENAMBAHAN ZAT ADITIF ALAMI PADA BENSIN TERHADAP PRESTASI SEPEDA MOTOR 4-LANGKAH Wahyu Eko Saputra; Harmen Burhanuddin; M.Dyan Susila
Jurnal Ilmiah Teknik Mesin Vol 1, No 1 (2013)
Publisher : Jurnal Ilmiah Teknik Mesin

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Abstract

The quality fuel affects combustion because the fuel quality will get better combustion. Therefore, it is necessary to improve the quality of the fuel to produce combustion. Such an increase in the octane rating of the fuel can result in increased good quality of the fuel. One method used is the addition of natural additives in the fuel. Tests were performed using a motorcycle test engine 100 cc 4-stroke is running test (road test and acceleration), and stationary testing. The test road test conducted by a distance of 10 km with an average speed of 50 km / h test aims to get the value of fuel consumption. Furthermore, using the acceleration test speed 0-80 km / h and 40-80 km / h which aims to get the fastest acceleration time. Then the stationary testing done on rotation 1.000 rpm and 3.000 rpm with a 5-minute aims to get the value of fuel consumption at rest. This test uses a natural variation in the dose of the gasoline additive used is 1:4, 1:6, 1:8, and 1:10. On testing fuel consumption with the distance 10 km can be seen that the concentration of 1:6 is the best concentration that can reduce fuel consumption by 23,31% (136 ml), compared with natural gasoline without additives (177,333 ml). Average time acceleration 0-80 km / h resulted in the concentration of the best natural additives 1:4 that is with an average acceleration of 10,847 seconds (20,69%). In testing acceleration 40-80 km / h obtained for the concentration of 1:8 with an average acceleration of 6,993 seconds (21,83%). Tests of stationary fuel consumption at 1,000 rpm for 5 minutes in to the best performance at a concentration of 1:8 that is 33,91% (12,667 ml) whereas at 3.000 rpm stationary best performance is obtained at a concentration of 1:10 30,71% (14,334 ml).Keywords : fuel, natural additives, engine performance.
POTENSI PRODUKSI MINYAK ATSIRI DARI LIMBAH KULIT KAYU MANIS PASCA PANEN Neni Susanti; Indra Mamad Gandidi; M.Dyan Susila ES
Jurnal Ilmiah Teknik Mesin Vol 1, No 2 (2013): Jurnal FEMA Vo.1 No.2 Tanggal 10 April 2013
Publisher : Jurnal Ilmiah Teknik Mesin

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Kayu manis (Cinnamomum burmanii BL) is known and cultivated for its aromatic content. In the previous experiment the powder of kayu manis leather can be extracted to be atsiri oil. And the rubbish like; leaf, scrap, the powder from cutting tree, trank are the parts of wood leather that haven’t been used yet, so it will be appear as a problem for the environment. If the rubbish are extacted by steam and water destilation it will produce atsiri oil with good quality and good cost, as a mix ingredient of medicine beverages, food, and parfume. The experiment goal is to filter by using arrange destilation tool to get output the process is an optimal rendeman atsiri oil. An the extract metode used is steam and water destilation. To get a good filter output should be treated by parameter variety suitable with test tool performance they are; pressure variety (1 atm; 1,65 atm; 1.85 atm), temperatur (99oC; 114oC; 119oC) and resident time (1 hour; 2 hour; 3hour). The result of the testing is an output of the most atsiri oil, it is at pressure 1,85atm, the ingredient weigh is 750 gram, and the resident time 3 hour. Where, the maximum percentage rendeman from the leaf, powder, and scrap until 1,63 %; 1,49%; and 1,42%. Atsiri oil has not reached optimum point, because the pressure has not been optimal and the capacity of the tank is limited. The percentage rendeman up to 1% can give chance for the rubbish of kayu manis to be processed become atsiri oil. So that, this research can be continue by project for study of home industry.Keywords : Destilation process, atsiri oil, kayu manis, the rubbish of kayu manis leather.
KAJI EKSPERIMENTAL SISTEM PENYIMPANAN BIOGAS DENGAN METODEPENGKOMPRESIAN DAN PENDINGINAN PADA TABUNG GAS SEBAGAI BAHAN BAKAR PENGGANTI GAS LPG Dian Fadli; Muhammad Irsyad; M.Dyan Susila
Jurnal Ilmiah Teknik Mesin Vol 1, No 4 (2013)
Publisher : Jurnal Ilmiah Teknik Mesin

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Abstract

The potential of biogas from cattle dung in Lampung province is big enough that 227 792 kg / day based on the number of cattle and buffalo tails as much as 742.8. During this shelter biogas only placed in plain tubes which are then piped into the pipeline for use as lighting and gas stove. This study intends to outline the principles of storage technology in LPG cylinder biogas, biogas and testing by cooling and compressing. Based on the results of testing at constant pressure 6 bar with the lowest temperature variation 7 ° C the amount of mass is 36.4 grams stored while based on calculations using the ideal gas law mass quantities stored at a temperature of 7 ° C is 36.7 grams. And the highest temperature of 10 ° C the amount of stored mass of 34 grams, while based on the calculation of the amount of mass stored at a temperature of 10 ° C for 36 grams. This is an effective way to increase the density of the biogas. And a beginning reference for researchers who want to conduct research on biogas biogas ÙÎ÷Sõanging to a liquid phase. Keywords: Biogas, storage systems, compressing and cooling, Ideal Gas
Co-Authors . Harmen . Harmen . Maindra . Maindra, . A. Yudi Eka Rosano A.Yudi Eka Risano Achmad Y T Panuju Achmad Yahya Teguh Panuju Agus Sugiri, Agus Ahmad Rapa'i Amrizal Amrizal Bagus Rachmad Akbar Bagus Rachmad Akbar, Bagus Rachmad Dian Fadli Dian Fadli, Dian Endro Prasetyo Wahono Gusri Akhyar Ibrahim Harmen Burhanuddin Harmen Burhanuddin, Harmen Herry Wardono Husein Manalu Indra Mamad Gandidi Jorfri B Sinaga Jorfri B Sinaga, Jorfri B Jorfri Boike Sinaga Junaidi Supratman Junaidi Supratman, Junaidi M. Haviz Mei Hartanto Muhammad Irsyad Muhammad Irsyad Muhammad Irsyad Natal Andreas H L Tobing Neni Susanti Neni Susanti, Neni Rapa'i, Ahmad Renardy, B Niko Sri Ratna Sulistiyanti Sulistiyanti, Sri R Wahyu Eko Saputra Wahyu Eko Saputra, Wahyu Eko Yoga Pratama Yudi Risano Yulian, Aji Muhammad