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All Journal Rekayasa Mesin Jurnal Teknik Pengairan: Journal of Water Resources Engineering ROTOR: JURNAL ILMIAH TEKNIK MESIN
Denny Widhiyanuriyawan
Jurusan Teknik Mesin Fakultas Teknik Universitas Brawijaya
Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Ukuran Butir Pasir Besi dan Volume Air Laut pada Absorber Type Fins Solar Destilation terhadap Produktifitas Air Tawar Anggara, Mietra; Widhiyanuriyawan, Denny; Sasongko, Mega Nur
Jurnal Rekayasa Mesin Vol 7, No 3 (2016)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.26 KB) | DOI: 10.21776/ub.jrm.2016.007.03.5

Abstract

The needs of clean water is especially increased for the living in coastal. Because of that, a simple equipment and low cost operation is needed. Distillation is a method to convert sea water to fresh water by using solar energy. Various research on absorbent plate solar still has been done to increase productivity and efficiency of distillation. In the study, fins absorbent plate was tested with iron ore grain size variation of 0,125 cm, 0,250 cm and flat absorbent plate with iron ore grain size variation of 0,125 cm. The volume of salt water in the basin is also varied of 1, 2, and 4 liters. The results shown that the fin absorbent plate with iron ore size of 0.125 cm and the volume of 1 liter have the highest freshwater productivity and efficiency of 3,7 l/m day and53,55%, respectively. The daily sun radiation of 16,071 MJ/m .day. The quality of resulted fresh water has fulfilled the standard for drinking water, hence it is consumable.
Peningkatan Kualitas Bahan Bakar Biogas Melalui Proses Pemurnian Dengan Zeolit Alam Hamidi, Nurkholis; Gede Wardana, I Nyoman; Widhiyanuriyawan, Denny
Jurnal Rekayasa Mesin Vol 2, No 3 (2011)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Biogas from digester consists primarily of methan (CH4) and carbondioxyde (CO2). Trace components that are often present in biogas are water vapor (H2O) , hydrogen sulfide (H2S),hydrocarbons (HC), ammonia (NH3, oxygen (O2), carbon monoxide (CO) and nitrogen (N2). In order to improve the quality of biogas, a cleaning process to remove the trace components and an upgrading process to adjust the calorific value are needed. A number of techniques have been developed to remove the trace components from biogas. In this experiment, however, chemical absorption of CO2 and H2S by solid zeolite in a plastic bag was experimentally investigated. The solid zeolite was activated by heat treatment and KOH. Absorption characteristics were examined. Test results revealed that the solid zeolite used were effective in adsorbed CO2 and H2S in biogas, creating CH4 enriched fuel. Absorption capability was transient in nature. With regular replacement or regeneration of used solid zeolite, upgraded biogas can be maintained. This technique proved to be promising in upgrading biogasquality.Keywords: KOH compound, calorific value of biogas, zeolite.
Optimalisasi Destilasi Nilam Kering melalui Pembekuan Pra Destilasi Sugiarto, Sugiarto; Sonief, A. As’ad; Sutikno, Djoko; Widhiyanuriyawan, Denny
Rekayasa Mesin Vol 5, No 1 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

The process of extracting oil from the leaves or stems cells by damaging the cell which usually done before or during distillation process. Damaging the cell can be done by mechanical process or freezing process. Chopping the leaves was done to damage the cells through the mechanical process, however the damage have not been able to destroy up to the celular level. While the freezing process could be expected to damage the tissue at the cellular level. Pure research on laboratory scale was used as the experiment method in this study. Freezing temperature pasca-distillation was variated on -13,4 ºC, -19,6 ºC and -24,8 ºC and without freezing process. While distillation process was varied on 95 ºC, 105 ºC dan 115 ºC. In this study, patchouli was distilled on wet and dry condition. LPG was used with automatically combustion control system of for keeping the temperature stability, increasing the capacity and quality of patchouli oil and reducing the production cost and the distillation time to less than 6 hours The stable distillation temperature was able to raise the volume of oil per kilogram of dry weight raw material and decrease the distillation time to less than 5 hours. Patchouli oil volume produced per kilogram of dry raw materials post freeze predistillation increased with increasing the distillation temperature. The low freezing temperature of the pre-distillation produced the high volume of patchouli oil per kilogram of raw material. Pre-distillation on the freezing process of dried patchouli was able to shorten the time of maximum distillation only in 3 hours. The range of distillation temperature on 95 ⁰C, 105 ⁰C and 115 ⁰C produced the different colors of patchouli oil from light brown to dark brown color.Keywords : optimalisation, distillation, dry patchouli, freeze pre-distillation
Pengaruh Variasi Sudut Input Sudu Mangkok Terhadap Kinerja Turbin Kinetik Anam, Asroful; Soenoko, Rudy; Widhiyanuriyawan, Denny
Rekayasa Mesin Vol 4, No 3 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

The most of renewable energy in Indonesia is hydro which all potential is for about 75000- 76000 MW. But the use of that potential is 3,783 MW of large-scale and 220 MW of small-scale only. The use of small-scale hydro energy is river flows which has speed with ranges 0.01 - 2.8 m/s and used for a source of electrical energy by kinetic turbines. Kinetic turbine is one of water turbines but it uses speed of river flows for changing the water’s kinetic energy into mechanic one. The performances of the kinetic turbines depends on many factors and one of them is the using of blades on the runner. Turbine with a cup blade, river flows mashes the blade and changes momentum that can provide the runner rotating. On that process, there is energy change, here is kinetic energy of river flows into mechanical one and produces electricity energy by a generator. So the purpose of this study is to determine the effect of kinetic turbine performance with a cup blade input corner variations. The results of this study indicates that the kinetic turbine with a cup blade input corner 10 o is the highest or maximum performance than 15 o and 20 o , because the cup blade input corner 10 o has much mass flows mashing and striking the blade and the kinetic turbine with cup blade input corner 20 o is the minimum performance.Keywords: Kinetic turbine, Turbine performance, bowl blade, input corner.
Purifikasi Biogas Sistem Kontinyu Menggunakan Zeolit Sugiarto, Sugiarto; Oerbandono, Tjuk; Widhiyanuriyawan, Denny; Permana Putra, Faruq Syah
Jurnal Rekayasa Mesin Vol 4, No 1 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

The continued development of the technology industry and the rapid depletion of petroleum energy the need for alternative sources of renewable energy to be a very important consideration. Biogas is a renewable energy that has great potential as an alternative energy. The content consists of CH4 biogas as fuel around 50-80% and CO2 as an impurity around 27-45%. With the CO2 gas can affect the purity of CH4 in biogas womb. Therefore, to get the maximum quality of biogas purification necessary. The research was done by making purification equipment (purifier) with zeolite granular solid filler mounted on a biogas digester system continue. Purification processes varying on zeolite layer that fills the purifier is 1, 2, 3, 4, and 5 layer. All walks take a purification process for 60 minutes and observed every 15 minutes. The results showed that the increasing time between biogas purification with zeolite, the CO2 levels tend to decline with the lowest percentage of 21.3% and CH4 levels increase with the highest percentage of 74.7%. This is due to the increasing time of purification, CO2 absorbed in the zeolite structure more and more. So with the absorption of CO2 by the zeolite, the resulting levels of CH4 has increased. In addition to the greater number of zeolite layers become increasingly declining CO2 and CH4 levels increase. This is because the more the number of layers of filler, wide contact area between the biogas by zeolite increasingly large that CO2 is absorbed by the zeolite increased.Keywords: Zeolite, CO2, CH4, purification, biogas continuous system
Purifikasi Biogas dengan Variasi Ukuran dan Massa Zeolit terhadap Kandungan CH4 dan CO2 Widhiyanuriyawan, Denny; Hamidi, Nurkholis; Trimandoko, Candra
Jurnal Rekayasa Mesin Vol 6, No 1 (2015)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (515.64 KB) | DOI: 10.21776/ub.jrm.2015.006.01.4

Abstract

Nowadays, the development of the renewable energy very rapidly. It is driven by the nature of the renewable energy that has been proven to be cleaner than conventional energy, so an increase in the use of renewable energy continues to rise. Biogas is produced from biological processes (anaerobic digester) is capable of producing gas such as CH 4 , CO 2 , H 2 S, and other gases. Therefore it is very important to make the process of refining the biogas. In this research, using the biogas purification process purification method stratified, with a solution of sodium hydroxide with zeolite is purified again and again purified with activated charcoal, hence the storied purification. In this study focused on the observation of zeolite as an adsorbent, the size of the fine and coarse zeolite, and zeolite are varied mass of 50 grams, 100 grams and 150 grams. In 60 minutes, the best result obtained on zeolites fine size with a mass of 150 grams of CO 2 obtained down to 4.07%, but the pressure dropped to 0.65 kPa. With the size of the coarse zeolite at 4.26% CO 2 , with a pressure drop of 0.84 kPa. After the purification process, zeolite proved to be hidrofill with the content of the zeolite fine biggest water with 5.4%.
Karakteristik Pembakaran CH4 Dengan Penambahan Co2 Pada Model Helle- Shaw Cell Pada Penyalaan Bawah Uwar, Nur Aini; Wardana, ING; Widhiyanuriyawan, Denny
Jurnal Rekayasa Mesin Vol 3, No 1 (2012)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Along with the development of industrial technologies is rapidly increasing the demand for renewable energy sources becomes a very important consideration. One of the alternative energy is now being developed is the energy derived from organic materials, this is because the organic compounds are classified as renewable energy. One energy technology in accordance with the requirements of the biogas technology. If biogas is purified or cleaned of impurities in this case CO2 is good, he would have the same characteristics as natural gas. How big is the influence of CO2 on heating value (heat) in the combustion process it is necessary to an investigation. one by looking at the characteristics of combustion, both the pattern and pace of rambatnya. Combustor used in this study is a model of Helle-shaw cell measuring 50 x 20 x 1 cm. Variation of the mixture used is the ratio 7,5:1 to 10: 1 with the addition of 10% 20%, 30% CO2. Performed on the ignition of ignition. Observation of the shape and rate of flame propagation is done using a high speed camera. The results showed that the ratio of 7,5:1 to 10: 1 blue color of the flame and the flame propagation speed greater penembahan but with 10% CO2 20%, 30% color changing flame reddish yellow which indicates incomplete combustion occurs, and the smaller the rate of flame propagation. This is influenced by the presence of buoyancy forces generated by the combustion.Keywords: energy, gas methane (CH4), CO2, the rate of propagation of flame
Pengaruh Variasi Diameter Lubang dan Bentuk Profil Elektroda serta Jumlah Pelat Netral terhadap Produksi Brown Gas de Fretes, Henry Valentino; Soeparman, Sudjito; Widhiyanuriyawan, Denny
Rekayasa Mesin Vol 10, No 2 (2019)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2019.010.02.7

Abstract

Electrolysis is a process of decomposing water molecules (H2O) into hydrogen (H2) and oxygen (O2) with the help of electrical energy as a trigger for the process. In the electrode process, it takes two electrodes to be placed in water. Electrolysis reaction is a redox reaction, in which the reduction reaction occurs at the cathode forming hydrogen and oxidation occurs at the anode and forms oxygen. The purpose of this study was to determine the effect of variations in the diameter of the electrode hole, the shape of the electrode and the number of neutral plates on the production of Brown Gas by using NaOH as a catalyst. The electrodes used are plain, square, circle and cross shape, and the diameter of the electrode hole is 5 mm, 8 mm, 10 mm and 12 mm. besides that the number of neutral plates varied 4 pieces, 6 pieces, and 8 pieces. NaOH dissolved in water has a percentage of 1.77%. From the results of the study, it is shown that the rate of production increased as the number of neutral plates increased and the power needed by the generator also increased, but the efficiency of the generator was smaller. The diameter of the electrode hole and the shape of the electrode also affect Brown gas production, this is because the electrode cross-sectional area in contact with the electrolyte also has different values. The highest productivity value on cross shape electrode, 10 mm electrode hole diameter and the number of neutral plate 8 pieces, and the lowest in the form of the plain electrode, 5 mm hole diameter and 4 neutral plates. The lowest generator efficiency in the electrode variation is a circular shape, the diameter of the electrode hole is 12 mm and the use of 8 neutral plates and the largest in the square electrode, 12 mm electrode hole diameter and 4 neutral plates.
Optimasi Hardening Baja Karbon Sedang dengan Fluida Getah Pohon Pisang Menggunakan Metode Taguchi Dimu, Roymons Jimmy; Widhiyanuriyawan, Denny; Sugiono, Sugiono
Jurnal Rekayasa Mesin Vol 5, No 2 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

The aim of this research is to increase the hardness of the material with hardening process. Factors that influence the hardening process are the raw material, the heating temperature, holding time and cooling medium. To obtain the optimum combination of factors hardening process, this research adopted the Taguchi experimental design method. The type used were orthogonal array L9 (34) which generates a combination of 4 factors with each factor has 3 levels.Raw materials used were retrieved from the leaf springs trucks, jeeps and minibuses which are medium carbon steels with different chemical compositions. Based on the heating temperature recommended for medium carbon steel hardening process is between 723 - 900ºC then the heating temperature used 723ºC, 800ºC, 850ºC. Whereas for the holding time that carbon steel is recommended for 5-10 minutes, then the holding time used were 5, 7.5, 10 min. For the cooling medium used in this research are banana tree sap fluid and also water and oil as a comparison. In this research presented the results of hardness test hardening process with a combination of treatments truck spring steel material, temperature 850ºC, 10 min holding time and cooling medium with banana tree sap fluid in order to get the highest hardness worth HRC 63.03. Based on the analysis of Taguchi method can be seen that the four factors the most influence on hardness of material is temperature, holding time, cooling medium, and the smallest is the material.Keywords: Hardening, Banana Tree Sap Fluid, Taguchi
PENGUATAN WILAYAH BINAAN MANDIRI ENERGI MELALUI PENINGKATAN KAPASITAS MIKROHIDRO DI DAERAH TERPENCIL Asmaranto, Runi; Sugiarto, Sugiarto; Widhiyanuriyawan, Denny; Purnomo, Mangku
Jurnal Teknik Pengairan Vol 11, No 1 (2020)
Publisher : Jurusan Teknik Pengairan, Fakultas Teknik, Universitas Brawijaya

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Abstract

Tanah Merah is an isolated hamlet in the village of Batur that has not been reached by PLN electricity because its geographical is on the slopes of Mount Argopuro and far from the village center. To achieve this just by walking or riding a motorcycle as far as 3 km. In Tanah Merah, micro hydro has been developed from the Kedung Sumur River discharge, but it is not yet optimal. A collaboration was held by BPPM FT UB with CSR of PT PGN (Persero) in 2016, but has not been able to resolve the limited power generated for 500 families. Another potential community is farmers and breeders. Most livestock activities carried out by the community are 267 head of beef cattle with the distribution of cattle farmers in RT 8 totaling 107 households, RT 9 totaling 95 households and RT 10 totaling 62 households averaging 2 cows. With such a large number of cattle, it is of course also produced a large amount of livestock waste. Based on these problems, the UB Community Service Team through the Serving Doctoral Program wants to help partner communities solve existing problems in order to improve their welfare. Efforts are being made to empower community groups of micro-hydro (PLTMH) through the use of renewable energy, namely increasing micro-hydro electricity capacity and empowering micro-hydro-based economies.
Co-Authors Aji, Supa Kusuma ARDIANSYAH ARDIANSYAH Asroful Anam Candra Trimandoko, Candra de Fretes, Henry Valentino Dida, Hero P Djoko Sutikno Dody Candra Kumara, Dody Candra Faruq Syah Permana Putra I Nyoman Gede Wardana Ikhwanul Qiram ING Wardana ING. Wardana, ING. Lilis Yuliati M. Ruslin Anwar Mangku Purnomo Mariki, I Wayan Wawan Mega Nur Sasongko Mietra Anggara Nur Aini Uwar Nurkholis Hamidi Purnami Purnami Roymons Jimmy Dimu Rudy Soenoko Runi Asmaranto Slamet Wahyudi Sonief, A. As’ad Sudjito Soeparman Sugiarto S Sugiono Sugiono Syamsul Bahri La Muhaya, Syamsul Bahri Tjuk Oerbandono Wicaksono, Hangga Widya Wijayanti Wijono Wijono Zulkifli Kurniawan