710 hasil
Menampilkan 441–460 · 0,83 detik · RSS
-
Artikel Jurnal
PENGARUH GEOMETRI SUDU INLET BAGIAN TIP DAN HUB TURBIN PROPELLER PADA UNJUK KERJA ALIRAN HORISONTAL
Potential of Indonesian hydropower which has only been utilized 9% has been concern of many researchers. Hydro power, especially on streams with Ultra Low Head (ULH), has become a trend of current research as renewable energy in reducing the energy crisis as a pico scale power plant. ULH which is…
-
Artikel Jurnal
PENGARUH KETINGGIAN DAN SUDUT KEMIRINGAN SALURAN AIR TERBUKA TERHADAP PARAMETER ALIRAN DAN PUTARAN TURBIN VORTEX
The stream parameter was affected by the height of falling, water debit and head losses. The stream that had straight flow could be converted to vortex stream using shapping drain. The movement of the vortex stream could be converted to mechanical energy using vortex wheel. The aim of this study…
-
Artikel Jurnal
ANALISIS PENGARUH KONDUKTIVITAS IONIK MATERIAL ELEKTROLIT PADA KINERJA SOLID OXIDE FUEL CELL
SOFC electrolytes are known for their ohmic resistance aspect, which is dependent on temperature. Using COMSOL Multiphysics numerical simulation, analysis of SOFC power performance with yttria-stabilized zirconia (YSZ) and lithium sodium carbonate – gadolinium-doped ceria ((LiNa)2CO3-GDC)…
-
Artikel Jurnal
KONVERSI MINYAK BIJI KAPUK MENJADI BIODIESEL MENGGUNAKAN KATALIS CaO/HTC
This research focuses on producing biodiesel through the transesterification process of Ceiba pentandra triglyceride acid using a CaO/Hydrotalcite (CaO/HTC) catalyst. This study aimed to determine the effect of adding catalyst mass, the mole ratio of oil: methanol to biodiesel yield, and knowing…
-
Artikel Jurnal
ANALISIS TEGANGAN PISAU PENCACAH LIMBAH KAKAO DENGAN METODE BEDA HINGGA
One of the vital components of a crushing machine is a crushing blade. Where the crusher blade works and is in direct contact with the cocoa waste to be crushed. Many crushing blades wear out quickly after being used for a short time because the blade material has low strength.The aim of this study…
-
Artikel Jurnal
EFFECTS OF CROSSWIND ON THE DRAG OF MEDIUM SPEED TRAINS
Aerodynamic research on medium-speed trains is trying to map the flow of fluid around trains. The train model testing is conducted to study Cd values experimentally using a closed-loop wind tunnel at the Balai Besar Teknologi Aerodinamika, Aeroelastika, dan Aeroakustika. In addition to the…
-
Artikel Jurnal
ANALISIS SISTEM PENDINGIN MENGGUNAKAN THERMOSTAT DAN TANPA THERMOSTAT DALAM PENCAPAIAN PANAS MESIN PADA ALAT UJI PRESTASI
The ideal working temperature of the engine is about 82 - 93 ⁰C. The engine cooling system is needed to reach and maintain the ideal working temperature of the engine. The engine cooling system is equipped with a thermostat to regulate the flow of cooling water to reach and maintain the…
-
Artikel Jurnal
TEMPERATURE EXHAUST GAS ANALYSIS ON THE SHIP ENGINE
Dual-fuel diesel engine is an engine with the use of two fuels in the combustion process to get labor on the engine. The types of fuels used include methane gas and marine gas oil fuels. Methane is produced from vapor cargo tank liquified natural gas. The purpose of this study was to determine what…
-
Artikel Jurnal
ANALISA STRUKTUR DAN PERFORMA IMPELLER POMPA SENTRIFUGAL DENGAN MENGGUNAKAN COMPUTATIONAL FLUID DYNAMIC AND FINITE ELEMENT METHOD
Centrifugal pumps are divided into two main components, namely the impeller and the volute. The impeller is a rotating pump component, while the volute is a stationary pump component. The current problem in the industrial world is that the pump capacity that operates is not in accordance with the…
-
Artikel Jurnal
ALAT BANTU UNTUK PEMBUATAN ULIR LUAR DAN ULIR DALAM
The machining process is the process in which different products are made especially from metal and it is often used in both small and large industries. One of the products of the machining process is threaded products and there is an ongoing increase in the use of these products because of their…
-
Artikel Jurnal
PRODUCTION OF BIODIESEL FROM CORN AND COCONUT OIL WITH LOCALLY JEMBER INDONESIA VEGETABLE OIL
In this study, experimental trials will be carried out to find out the optimal recipe for processing corn oil and biodiesel oil produced by UMKM in Jember Regency (Indonesia) into biodiesel known as biosolar. Experimental conditions will be optimized to obtain partial transesterification of coconut…
-
Artikel Jurnal
THE LAYER HEIGHT VARIATIONS EFFECT ON TENSILE STRENGTH OF 3D PRINTING PRODUCT PLA MATERIAL BASED
3D Printing products are produced and used for many purposes like biomedical equipment, mechanical part, and so on. Therefore, mechanical properties are important for 3D Printing products. Layer height as one of the 3D Printing process parameters will be observed to know the effect on product…
-
Artikel Jurnal
PENGARUH TEKANAN PEMOTONGAN TERHADAP LAJU KOROSI STAINLESS STEEL 316L DENGAN PROSES ABRASIVE WATER JET CUTTING (AWJ)
The waterjet pressure on the Abrasive Water Jet cutting processes affects all the related to the phenomenon of the material. In this study, the effect of water pressure on the AWJ process on the surface quality and corrosion properties of 316L Stainless steel was investigated. The cutting process…
-
Artikel Jurnal
PERANCANGAN SISTEM DIAGNOSIS GETARAN MOTOR MENGGUNAKAN JARINGAN SARAF TIRUAN PROPAGASI MUNDUR
Expert system design is an effective and sophisticated way of diagnosing a fault in a 12 kW DC Motor. This study aims to design an ANN system to determine damage to the motor. The research method uses spectrum data from the vibration analyzer which is collected based on different types of damage…
-
Artikel Jurnal
Pengaruh Variasi Media Pendingin dan Variasi Holding Time pada Proses Perlakuan Panas terhadap Sifat Mekanik dan Struktur Mikro pada Baja Mangan Fe-10.5Mn-1.3Mo-2.5Ni
The characteristics of the Fe-10.5Mn-1.3Mo-2.5Ni steel alloy results of casting were further investigated after a heat treatment process was carried out through 2 stages, namely heating from room temperature to 700 ° C with a holding time of 3 hours, then raising it again to a temperature of 1000 °…
-
Artikel Jurnal
PENGARUH TEGANGAN PERMUKAAN PADA TEBAL FILM CAIRAN DAN KARAKTERISTIK GELOMBANG ANTARMUKA ALIRAN DUA FASE STRATIFIED HORIZONTAL
This experimental study aims to examine the effect of the surface tension on the characteristics of unidirectional air-liquid interface waves on a horizontal pipe. The pipe used is an acrylic pipe with a diameter of 26 mm. To vary the surface tension, the working fluid consisted of 100% water and…
-
Artikel Jurnal
DESAIN DAN PENGEMBANGAN MESIN MICRO-PRESS PEMBENTUK KOMPONEN MIKRO
The increasing application of micro electro mechanical systems technology on daily life devices increases the need for micro components. Furthermore, it must be supported by reliable fabrication technology to produce micro-sized products. One of these technologies is micro-sheet metal forming…
-
Artikel Jurnal
DESIGN AND EVALUATION OF CARABINER USING FINITE ELEMENT ANALYSIS
A carabiner is a fall protection safety tool that is used in various outdoor and indoor activities, most known usage is at climbing and high-risk work related to elevation. A standard carabiner is capable to withstand at least 7 kN of static load. In this study, we only observe how carabiners…
-
Artikel Jurnal
COMPARATIVE CALORIFIC ANALYZES OF COCONUT SHELL AND DURIAN FRUIT PEEL BY USING DIFFERENTIAL SCANNING CALORIMETRY
The production of coconut and durian means that it will produce a lot of waste from its shell. Indonesia is a country that produces a lot of them. The coconut shell (CS) and durian fruit peel (DFP) can be converted to briquette as new fuel from biomass. The objective of this research is to obtain…
-
Artikel Jurnal
PERANCANGAN TEKANAN UDARA POSITIF PADA KABIN MOBIL MSSC (MOBILE SWAB SAMPLING CHAMBER)
MSSC (Mobile Swab Sampling Chamber) car should have a fulfilling requirement as a protective isolation room or positive pressure room. A positive pressure room is needed so the virus or bacteria that is carried by the patient outside the car could not enter and contaminate the medical officer…