710 results
Showing 141–160 · 0.27 seconds · RSS
-
Journal Article
PENGARUH LOAD CAPACITY LISTRIK TERHADAP EFFISIENSI TURBIN UAP MODEL C6-R8-ER : STUDY KASUS PADA PT. SURYA BORNEO INDUSTRI
Steam turbines are widely used at many industrial. The purpose of this research was to study the effect of load capacity on steam flow mass rate. Load Capacity is directly proportional to the steam flow mass rate to increase Steam turbine power. While the effect of load capacity on steam turbine…
-
Journal Article
KARAKTERISTIK MEKANIK DAN BALISTIK KOMPOSIT Al-8Zn-4Mg-20 VOL.% SiC HASIL PROSES SQUEEZE CASTING DAN PERLAKUAN PENUAAN
Armoured Personnel Carrier (APC) as a means to support the mobility of TNI must have high toughness so that they are not easily penetrated by bullets. The APCs are commonly made of steel due to their excellent toughness and ballistic properties, however, it has a high density that reduces their…
-
Journal Article
DURASI PERAWATAN OPTIMUM UNTUK FASILITAS PRODUKSI MINYAK DAN GAS DI KILANG TUBAN EAST JAVA
Electric Submersible Pump (ESP) is one of the most critical oil & gas equipment in Tuban East Java (TEJ) field. This research applies Reliability Centered Maintenance (RCM) to oil & gas to optimize maintenance methods for ESP at the TEJ field. The RCM was applied based on the historical failure…
-
Journal Article
ANALISIS MODIFIKASI DESAIN REAKTOR PADA RANCANG BANGUN ALAT PIROLISIS DAN PENGUJIAN NILAI KALOR UNTUK PLASTIK PP DAN ABS
The increasing use of plastic results in a rise in the volume of waste each year and has an impact on the environment. Pyrolysis is a method for recycling plastic waste into fuel oil. Improvements in pyrolysis design and techniques continue to be made to obtain better performance and optimal…
-
Journal Article
STRENGTH CONSIDERATION ON CAR BODY MODIFICATION FOR PANORAMIC TRAIN
Modifying the car body structure from the existing train to another car body type requires an analysis of several factors. The strength of the design due to overload and the durability of the structures due to operational loads need to be re-evaluated. Furthermore, stiffness analysis also needs to…
-
Journal Article
ANALISIS KARAKTERISTIK SUDUT PENYEMPROTAN BIODIESEL PALM OIL MELALUI PENAMBAHAN VARIASI KONSENTRASI METANOL
This study aims to determine the effect of adding methanol as an additive to biodiesel to the spray angle on the diesel fuel injector. The material used in this study was palm oil biodiesel and added methanol with a concentration variation of 5%; 10%; 15%; 20% and 25% of the volume of the mixture…
-
Journal Article
PENGARUH KADAR AIR DI DALAM BRAKE FLUID TERHADAP KARAKTERISTIK GELEMBUNG PADA PROSES PEMANASAN BRAKE FLUID
The present study aimed to determine the effect of the percentage of water in brake fluid on the boiling point and the characteristics of bubble formation (the beginning of vapor lock) during the brake fluid heating process. DOT 3 Brake Fluid and water were used as the working fluid in the present…
-
Journal Article
DESIGN OF NATURAL FIBER POWDER MACHINE
Natural fiber processing is the type of fiber as raw materials for textile or other industries that can be obtained directly from nature. In the Indonesian automotive industry, the manufacture of parts in vehicles is Polypropylene high impact (PPHI). An example of an existing part is a CVT slide…
-
Journal Article
CARBON SIZE AND TEMPERATURE EFFECTS TO JIS S45C CARBURIZED STEEL
Wear on a metal can be naturally found in components that operate in a friction environment, such as in a transmission system. However, it can be a substantial problem when the wear rate is not within the permitted limit. Surface hardening is a popular way to improve surface wear resistance for…
-
Journal Article
EVALUASI KINERJA DIRECT EXPANSION SOLAR-ASSISTED HEAT PUMP WATER HEATER KAPASITAS 30 LITER DENGAN MENGGUNAKAN REFRIGERAN R134A
Experiments were carried out to determine the performance of a direct expansion solar assisted heat pump water heater (DX-SAHPWH) which mainly consists of an evaporator panel with a surface area of 0.23 m2, a rotary compressor with an input power of 122.5 W, an insulated water tank that has been…
-
Journal Article
PENINGKATAN KINERJA MESIN 2 SILINDER DENGAN PENAMBAHAN OCTANE BOOSTER PADA RON 90
Octane number value in fuel plays an important role in the performance of a 2 cylinder gasoline motor. This study aims to increase the octane number value by using octane booster. The method used by mixing RON 90 with octane booster to get engine performance consisting of torque, power, specific…
-
Journal Article
PENGARUH JUMLAH SUDU TERHADAP KINERJA TURBIN SAVONIUS TIPE DRAG PADA ALIRAN AIR DALAM PIPA
The concept of clean and renewable energy is currently a focus developed continuously. One of the abundant sources of clean and renewable energy is water. A water turbine is a mechanism to generate electrical energy by utilizing the water flow. Pico or nano hydro turbines produce electrical energy…
-
Journal Article
PENGARUH PENAMBAHAN ADJUSTER PADA KOMPOR BRIKET TERHADAP JARAK PEMBAKARAN DAN LAJU PERPINDAHAN PANAS KONDUKSI
The effective and efficient use of biomass briquettes is strongly influenced by the type of stove used and the way it is used. This study aims to design a briquette stove by adding an adjuster: the test fuel used honeycomb briquettes and forest fern charcoal. The heat transfer from burning…
-
Journal Article
PENGARUH VARIASI SUDUT DAN JARAK PENEMBAKAN SANDBLASTING PADA PROSES PRETREATMENT TERHADAP KUALITAS PELAPISAN CAT DAN SIFAT KOROSI PADA BAJA KARBON RENDAH
The purpose of this study was to determine the effect of variations in the angle and distance of sandblasting on paint coating quality and corrosion properties of low carbon steel. The success of a coating is highly dependent on surface roughness, so sandblasting is needed to clean and create a…
-
Journal Article
PENGARUH PENGUJIAN KEKERASAN DAN PENGUJIAN TEKAN TERHADAP KARAKTERISTIK GAYA TUMBUKAN PADA CANGKANG KENARI (CANARIUM INDICUM L)
Kenari (Canarium indicum L) belongs to the Burseraceae family and is one of the endemic fruits in Indonesia, especially Maluku. Walnuts have a tough shell that encloses the flesh, to get the flesh without damaging it careful effort is needed. This study investigated the strength of walnut shells…
-
Journal Article
ANALYSIS THE EFFECTS OF YTTERBIUM RARE EARTH ON THE CORROSION RATE OF SACRIFICIAL ANODE ALUMINIUM IN SEAWATER ENVIRONMENT AT ROOM TEMPERATURE
Corrosion is a degradation process on metal that happen naturally. Corrosion is one of the most common problems in the industry, resulting the corrosion prevention much needed to increase the lifetime of a material. One of the methods of corrosion prevention is cathodic protection using a…
-
Journal Article
ANALISIS KINERJA MESIN PEMARUT SAGU
Sago plantations are spread in almost all regions in Indonesia, such as Sulawesi, Kalimantan, Sumatra, Papua and Maluku with a land area of approximately 1,128 million Ha, which means that 51.3% of the world's sago is in Indonesia. Papua, including Merauke, is a district at the eastern tip of…
-
Journal Article
ANALYSIS OF COGGING TORQUE REDUCTION FROM DESIGN COMPUTATIONAL PERMANENT MAGNET SYNCHRONOUS MOTOR WITH TAGUCHI METHOD
Permanent Magnet Synchronous Motor (PMSM) applications include electric vehicles, industrial pumps, wind turbines, aerospace technology, and many others. In this study, cogging torque is the central aspect of the discussion, which is the motor model, the thickness of the permanent magnet rotor, and…
-
Journal Article
PYROMETALLURGICAL PROCESS FOR ZINC ANALYSIS IN SPHALERITE APPLYING XRD AND XRF
This paper has analyzed dominant zinc element in sphalerite naturally found together with galena in mineral ore. Since pyrometallurgical route related to roasting process is very common to mineral dressing, therefore, this investigation has studied the effect of varied roasting time (30 min, 60…
-
Journal Article
PENGARUH KOMPOSISI LAPISAN NI-CR PADA BAJA ASME SA 210 C TERHADAP LAJU EROSI SUHU TINGGI
The purpose of this study was to determine the high temperature erosion rate of the NiCr coating on ASME SA 210 C steel using the combustion oxy fuel thermal spray method. In Circulating Fluidized Bed (CFB) boiler, there is circulation of fly ash, silica sand and air in a high temperature…