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Nasrul Ilminnafik
Jurusan Teknik Mesin Fakultas Teknik Universitas Jember
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PENGEMBANGAN USAHA TEPUNG IKAN DI DESA NELAYAN PUGER WETAN Halimatus Sa’diyah; Alfian Futuhul Hadi; Nasrul Ilminnafik
Asian Journal of Innovation and Entrepreneurship Vol 1 No 01 (2016): January 2016
Publisher : UII

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ajie.vol1.iss1.art4

Abstract

Puger Wetan is the largest fisheries center in Jember. One of the fish type produced is SardinellaLemuru.  Due to its small size and prickly nature, it is rarely consumed directly. It is commonly sold as raw material for canned sardines. Canned sardines manufacture needs fresh Lemuru, because it will cause itching on the tongue if not fresh. Whereas, fishermen mostly piled the fish in the boat hatch then gave ice cubes, so that the majority of it will no longer be fresh when arrived in the mainland because its perishable nature due to its thin skin.As the result, most of fishermen’s catch is not feasible for canned sardines and become leftovers. During this time, it will be sold at a low price. Fish leftovers that are not absorbed by the market aredumped into the river, becomingleftovers. The waste pollutes the environment and harms the health and hygiene. There will be more wastes during the fishing season, as more and more lemuru leftovers are dumped. This activity aims to resolve the problem by transforming the leftovers into fish meal, using appropriate tech machines. The activities are carried out in several stages. The first stage is the counseling about the negative impact of fisheries waste and the possibility of utilizing it into fish meal, also about the business opportunity that is still potential because domestic demand is still not yet met. The explanation of the importance of business management was also given.The third stage is the practice of making fish meal with the help of tools that have been previously converted technology. The fourth stage is the evaluation of activities for the benefit of partnering groups. Lemuru leftover utilization into fish meal is one of the important components in animal feed which can increase the fishermen income, while reducing environmental pollution.
Karakteristik Termal Briket Kayu Sengon Dengan Variasi Suhu Tekan Nasrul Ilminnafik; M. Agung Fauzi
ROTOR Vol 8 No 2 (2015)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Briquette is a solid fuel that made from organic waste and mixed with other materials by pressure. In this research, the raw material used is waste of sengon sawdust and used  tapioca flour as binder. This study focused on the effect of temperature pressure variations on ignition time, burning time and the rate of combustions of briquette charcoal sengon. Pyrolisis temperature 400 ºC and variation of temperature pressure were 150ºC, 175ºC, and 200ºC. The results of research onsuppression temperature of 200 ºC, the ignition time is getting longer, because the more water out of charcoal and tapioca, it makes active adhesive particles to bind the charcoal leading to higher density briquettes. On suppression temperature of 200 ºC, the burning time is getting longer, because more and more moisture out of charcoal and tapioca, so that more particles tapioca that binds the active charcoal. On pressure of 200 ºC, the slower the rate of combustion because the evaporation of the water content of charcoal and tapioca so that the higher the water content out of the adhesive will more actively bind charcoal and increase density of briquettes. Keywords: briquettes sengon, thermal characteristics, ignition time, burning time, rate of combustion.
KARAKTERISTIK API SYNGAS PADA GASIFIKASI DOWNDRAFT DENGAN BAHAN BIOMASSA SEKAM PADI Nasrul Ilminnafik; Frenico A.O.
ROTOR Vol 9 No 1 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Telah dilakukan penelitian tentang karakteristik api pada gasifikasi dengan  reaktor tipe downdraft menggunakan biomassa  sekam padi. Penelitian ini  menggunakan variasi air fuel ratio (AFR) sebesar 1.08, 1.35, 1.62, 1.90 untuk mengetahui temperatur dan warna api. Hasil dari penelitian menunjukkan bahwa kualitas syngas yang baik ditunjukkan dengan api yang bewarna biru. Proses gasifikasi  optimal pada suplai udara sebesar  1,0 m/s yang ditunjukkan oleh cepatnya api mencapai warna biru 100 % dan temperatur api tertinggi mencapai 675°C . Semakin jauh dari nilai AFR optimal, kualitas syngas akan semakin menurun yang ditunjukkan oleh menurunnya temperatur api dan prosentase warna api biru. Temperatur dan warna api bisa digunakan sebagai parameter yang menunjukkan kualitas syngas.
KARAKTERISTIK SPRAY BAHAN BAKAR CAMPURAN MINYAK DIESEL DAN BIODIESEL CALLOPHYLLUM INOPHYLLUM Muhammad Lutfi Azis; Lukman Hakim; Nasrul Ilminnafik
ROTOR Vol 13 No 1 (2020)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (198.05 KB) | DOI: 10.19184/rotor.v13i1.19589

Abstract

The characteristic of spray largely determines of combustion quality. Before testing the fuel of diesel engine, characteristic of spray is needed to know. Biodiesel made from nyamplung seeds (callophyllum inophylum) mixed with diesel oil for spray characteristics test. The research was conducted at 1 atm ambient pressure, 15 MPa injection pressure. The fuel used Oil diesel added biodiesel variation B0, B20, B30, dan B100. The fuel mixture sprayed by nozzle tester and recorded using a 480 fps camera at 224x168 resolution to cognize spray tip penetration and spray angle. The result of research showing viscosity of fuel mixture has huge impact on spray characteristic. At high viscosity, longer spray tip penetration longer and smaller spray angle. Its affects the homogeneity of the mixture of fuel and the air. Keywords: spray characteristic, biodiesel, callophyllum inophylum
ANALISIS PENGARUH VARIASI MASSA LPG SEBAGAI REFRIGERAN TERHADAP PRESTASI KERJA DARI LEMARI ES Alfons Erick Perkasa; Nasrul Ilminnafik; Digdo Listyadi
ROTOR Vol 6 No 1 (2013)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Refrigerant is a fluid acting on a cooling machine that plays an important role in a carnot cycle cooling engine. In study was done by looking at the effect of adding refrigerant mass variation of the COP (Coefficient of Performance) by using a refrigerant-based non-Freon refrigerant that use LPG (Petrileum Liquefied Gas). In this study using the LPG mass variations 50 grams, 80 grams and 90 grams and use R-12 refrigerant. From the research conducted, the results obtained from the performance engine cooling using refrigerant 80 grams times higher than that using the mass 50 grams and 90 grams, the highest coefficient of performance that is equal to 6,30 The result of research conducted, the result that the COP of the vapor compression machine (fridge) with a variation of the mass is the mass composition 80 grams is best used to obtain the greatest COP. Keyword : carnot’s siklus, COP (Coefficient of Performance), LPG(Liquefied Petrileum Gas)
ANALISIS STRUKTUR STATIS PROVISION CRANE DENGAN SOFTWARE ANSYS 16.2 Widyaningrum Febriolita; Jatisukamto Gaguk; Ilminnafik Nasrul
ROTOR Vol 11 No 1 (2018)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (518.804 KB) | DOI: 10.19184/rotor.v11i1.9644

Abstract

Provision crane is one type of crane used for loading and unloading on ships. Material provision cranes used in this study are structural steel with a cross-section of hollow pipes. This study aims to analyze the strength and equilibrium of the structure of provision cranes. The research methodology used is the analysis of finite element analysis with Ansys 16.2 software. The results of the structural analysis show that the maximum deflection occurs at the end of the boom arm, namely aks max = 0.93843 mm; σymaks maximum yield stress = 36,233 MPa; the maximum yield strain εymaks = 0.027632%. Key Words: provision crane, finite element method, Ansys 16.2, δmaks, σy maks
PENGARUH VARIASI BEBAN PENDINGIN TERHADAP PRESTASI KERJA MESIN PENDINGIN DENGAN REFRIGERAN R12 DAN LPG Moch. Rizal A. Y.; Nasrul Ilminnafik; Digdo Listyadi
ROTOR Vol 6 No 1 (2013)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

In this research discusses the influence of the cooling load variations on job performance refrigeration includes refrigeration capacity, coefficient of performance and cooling time, the compressor, the impact of refrigeration and compression work with refrigerants R12 and LPG. This study uses a variation of the load is light 20watt, 40Watt, 60Watt, and 80watt at the time of the study for 30 minutes for each of the cooling load, the file retrieval is done use the cooling machine refrigerator sanyo type with dimensions of 90 cm x 45 cm x 45 cm. The results showed the optimum value of COP (coeficient of Performance) of the fridge that I use on the refrigerant R12 and LPG with a load of 40 watts and 30 minutes was 4.75 for R12 and 5.00 for LPG,Obtained that use LPG refrigerant temperature produced less than R12 at the same time that is 30 minutes, the temperature on LPG without cooling load is 10 oC, the load is 11 oC 20 watt, 40 watt load by 12 oC, 60 watt load of 15 oC, and for a load of 80 watts by 17 oC and R12 produced no load temperature is 12 oC, 20 watt load as big as 13 oC, 40 oC as a 15 watt, 60 watt load of 16 oC, and for a load of 80 watts of 18  oC it is seen that the use of LPG refrigerants better because it has a pretty good engine performance compared to R12 views of COP obtained from the same load. Key word: Cooling load ,COP, LPG, refrigerant
KARAKTERISTIK PEMBAKARAN PADA MESO SCALE COMBUSTOR DENGAN BAHAN BAKAR BUTAN DAN LIQUEFIED PETROLEUM GAS Ivan Bagus Sanjaya; Nasrul Ilminnafik; FX. Kristianta
ROTOR 2017: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.561 KB) | DOI: 10.19184/rotor.v0i0.7700

Abstract

Increasing energy consumption causes problems of natural resources, especially fossil energy. Micro Power Generator (MPG) is a technological breakthrough that can help save fossil energy. There are two main parts to MPG, namely micro or meso scale combustor and a converter module. For optimizing meso scale combustor, the best fuel is needed between LPG and Butane. This research was conducted to determine the combustion characteristics of meso combustor at the equivalent variation ratio of 1.15 and 1.20 at the reactant rate of 30 cm / s. The study was conducted on ignition of the combustor meso scale space with dimensions of 30 ml in length and 3.5 ml in diameter, with variations in the supply of air in fixed fuel supply. Combustion characteristics include temperature and color of fire. Butane flame temperature in the variety of equivalent ratio is higher than that of LPG fire. The fire color produced by Butana is dark blue and light blue LPG. This shows that the combustion of butane in meso combustor is better than LPG. Keyword: Butane, LPG, combustor meso scale, fire color, flame temperature
PENURUNAN KADAR CO2 PADA BIOGAS DENGAN ABSORBSI NaOH TERHADAP KECEPATAN RAMBAT API As’adi GA; Nasrul Ilminnafik; Ahmad Syuhri
ROTOR Vol 7 No 1 (2014)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.718 KB)

Abstract

Biogas is produced from the fermentation process and generate gases: CH4, CO2, H2, N2, O2, and H2S. The biogas content on there are still many impurities (inhibitors) in affecting the quality of the biogas biogas, one of which is CO2. Carbon dioxide is a molecule that can inhibit and decrease the rate of the combustion reaction, because the carbon dioxide would disrupt the chain of chemical reactions of combustion, so the chemical reaction of combustion is inhibited. This study was to determine the effect of variations in the concentration and duration of contact NaOH to the reduction of CO2 levels shown in the figure the distance between the flame propagation speed of propagation of fire and flame. Observations carried out experiments with burning stoichiometric mixture (methane and air) that has been purified in the combustion chamber Helle-Shaw Cell 1cm x 20cm x 60cm. The results showed that the concentration and contact time can reduce the levels of CO2 in the biogas yield faster flame propagation speed.   Keywords: Cepat Rambat Api, Karbon dioksida, Konsentrasi NaOH, Waktu kontak
APLIKASI REFRIGERAN CAMPURAN LPG/CO2 PADA SISTEM REFRIGERASI KOMPRESI UAP Nasrul Ilminnafik
ROTOR Vol 5 No 2 (2012)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

A new binary mixture of R744 and R290 as an alternative natural refrigerant to halocarbon was presented in this paper. Its environmental performance is friendly. It has an ODP of zero and GWP smaller than 20. This work investigates the result of an experimental study carried out to determine the performance of a refrigeration system. Experimental studies for this mixture were performed on machine installation A.C. Bench, P.A. Hilton. Ltd.. Serial No. A573/41154. LPG-CO2 mixing ratio used was 90:10; 85:15; 80:20% by mass, with the total mass of the mixture of 300 grams. The results showed that the increase of air velocity at the evaporator with CO2 concentrations is constant, which is causing the increase on refrigeration capacity. While the addition of CO2 concentration mixed refrigerant causing decrease on refrigeration capacity. This is due to the increasing CO2 concentration causes a decrease in enthalpy of the mixture, which causes the refrigeration capacity is also decreased. Increased of air flow velocity at the evaporator at a concentration of CO2 remains causing compressor work resulting decrease. This is due to an increase in air velocity causing an increase in temperature of the evaporator so that the required compressor work is decrease. Increase of concentration of CO2 in the mixture causes the compressor work increases because CO2 has a high-pressure work so that the compression load is increasing and the compressor were employment given compressor is also increasing. Increase of air flow rate causes the coefficient of performance of refrigeration systems is getting increased. While the increase in CO2 concentrations has led to the decrease of performance coefficient Keywords: Hydrocarbon refrigerant, LPG, CO2, coeffisient of performance.
Co-Authors Achmad Aminudin Achmad Rifqi In'Amullah Adhe Reza Firmansyah Adhika Widyaparaga Agus Triono Ahmad Adib Rosadi Ahmad Adib Rosyadi Ahmad Iqbal Fawaid Ahmad Syuhri Ahmad Zainuri Alfariz, Mohammad Rifqy Alfian Futuhul Hadi Alfons Erick Perkasa Alfons Erick Perkasa, Alfons Erick Alief Muhammad Aliyansyah, Berly Amirul Yahya Andi Sanata Andi Sanata Apip Amrullah Arifin, Moch Miftahul Aris Zainul Muttaqin As’adi GA, As’adi Asyhar, Muhammad Maulana As’adi GA Atlanta Iwananda Audiananti Meganandi Kartini Cahya Alief Prasetyo Cahyani, Elisna Tirta Danang Yudistiro Danang, Yudistiro Dani Hari Tunggal Prasetiyo Dedi Dwilaksana Deny Tomy Andrianto Deny tomy andrianto Digdo Listyadi, Digdo Dimas Endrawan, Putra Djoko Wahyudi Dony Perdana Dwi Djumhariyanto Faiz Firdausi Fiqih Muhammad Firdausah, Risco Eka Firdiansyah, Alfian Freitas, Domingos de Sousa Frenico A.O. Fx. Kristianta Gaguk Jatisukamto GAMMA ADITYA RAHARDI Haidzar Nurdiansyah Halimatus Sa'diyah Halimatus Sa’diyah Hari Arbiantara Hari Arbiantara Basuki Hari Tunggal Prasetiyo, Dani Hary Sutjahjono Hendry Y. Nanlohy Ibnu, Muhammad Khadafi Imam Rudi Sugara Imam Sholahuddin Indro Pranoto Intan Hardiatama Ivan Bagus Sanjaya Junus, Sallahudin Kristianta, Franciscus Xaverius Kristianta, Fransiscus Xaverius Kurniawan, Eva Kustanto Muh. Nurkoyim Kustanto, Muh. Nurkoyim Luh Putu Ratna Sundari Lukman Hakim Lukman Hakim M Fahrur Rozy, Hentihu M Katibi Vanhas M. Agung Fauzi M. Agung Fauzi, M. Agung M. Fahrur Rozy Hentihu M. Fathuddin Noor, M. Fathuddin M. Katibi Vanhas Mahros Darsin Masruri Wardhana Meganandi Kartini, Audiananti Misto Misto Moch. Rizal A. Y. Moch. Rizal A. Y., Moch. Mochamad Asrofi Mochamad Edoward Ramadhan Moh. Nurkoyim Moh. Nurkoyim Kustanto Mubiyn, Shidqi Nur Muh Nurkoyim Kustanto Muh Nurkoyim Kustanto Muh. Nurkoyim Kustanto Muh. Nurkoyim, Kustanto Muhammad Dimyati Nashrullah Muhammad Lutfi Azis Muhammad Trifiananto Nasrullah, Muhammad Nur Cahyo Hidayat Nofal Kharis Nofal Kharis Kharis Nugraha, Raafi Aditya Nur Cahyo Hidayat Nasrullah, Muhammad Nur Widodo Nurkoyim Kustanto, Muh Puji Kristianto Putra Dimas Endrawan Putra, Dimas Endrawan Qoyinul Amin Reynaldi Akbar Ali Rika Dwi Hidayatul Qoryah Rima Zidni Karimatan Nisa Rizal Mahmud Rizal Mahmud Robertoes Koekoeh K.W. Salahuddin Junus Santoso Mulyadi Setyo Pambudi Setyo Pambudi Solahuddin, Imam Sumarji Syahriza, Mochamad Rifki Syuhri, Skriptyan N.H. Syuhri, Skriptyan Noor Hidayatullah Tanu Alifuddin D. S Taqdissillah, Doohan Wibowo, Robertoes Koekoeh Koentjoro Widyaningrum Febriolita wigo ardi winarko Wisnu Kuncoro yudan priyo anggono Yuni Hermawan