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All Journal Jurnal Energi Dan Manufaktur BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks Jurnal Ilmiah Teknik Mesin Poros Teknologika Mestro Prosiding SNTTM
Hery Sonawan
Universitas Pasundan Bandung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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Studi Aliran Fluida di dalam Model Nosel Stasioner dengan Menggunakan Simulasi CFD Hery Sonawan
Jurnal Energi Dan Manufaktur Vol 6 No 1 (2013): April 2013
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.395 KB)

Abstract

Penelitian tentang studi aliran di dalam model nosel stasioner dengan menggunakan simulasi CFD telahdilakukan. Penelitian ini adalah penelitian awal dari rangkaian penelitian untuk memperoleh modeldesalinasi dengan mengaplikasikan nosel berputar didalamnya. Sebelum melakukannya pada model noselberputar, dalam penelitian ini simulasi dilakukan terlebih dahulu pada model nosel stasioner. Untukmendapatkan karakteristik dari sebuah model nosel stasioner, dapat diperoleh dengan melakukan simulasiterhadap beberapa model nosel yang dikembangkan. Model nosel stasioner dianalisis melalui simulasi CFDdengan dibantu metode desain parametrik yaitu factorial design dan response surface methodology. Dalamfactorial design, variabel-variabel input awal yang diuji antara lain jumlah lubang orifice (dua dan tigalubang), lokasi lubang orifice (lubang di depan dan di samping), diameter lubang orifice (1 mm dan 2 mm),diameter nosel (2,5 mm dan 3 mm) dan bentuk nosel “flat nose”, sedangkan sebagai variabel output adalahsudut semburan air yang keluar dari nosel. Sudut semburan diasumsikan mewakili kehalusan ukuranbutiran air keluar nosel. Semakin besar sudut semburan maka semakin halus ukuran butiran yangdihasilkan. Simulasi CFD dengan Fluent menggunakan model viskos k-? standard yang dikombinasikandengan discrete phase model dengan pendekatan perhitungan aliran steady state. Fluida yangdisimulasikan di dalam nosel adalah air subdingin pada temperatur 250C mengalir dengan laju massakonstan. Dari dua model nosel stasioner yang disimulasikan, model nosel “flat nose” yang memiliki dualubang orifice berdiameter 1 mm dengan posisi lubang orifice eksentrik tangensial dan lubang noselberdiameter 3,35 mm menghasilkan sudut semburan terbesar. Semburan air ini tersebar dengan sudut 780dan menghasilkan pola aliran berputar (swirling). Model nosel stasioner ini selanjutnya akan dimodifikasiuntuk kebutuhan analisis pada model nosel berputar.
KAJI EKSPERIMENTAL PENGARUH KECEPATAN PUTAR SPINDEL DAN SUDUT POTONG UTAMA TERHADAP UMUR PAHAT PADA PROSES PEMBUBUTAN BAJA St-41 Dr. Ir. Hery Sonawan, M.T; Ir. Gatot Santoso; Wawan
Jurnal Teknologika Vol 9 No 2 (2019): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

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Abstract

Umur pahat merupakan suatu data pemesinan yang sangat penting dalam perancangan proses produksi pemesinan. Dalam penelitian ini, dilakukan proses pembubutan baja St-41 untuk menentukan umur pahat HSS. Rancangan percobaan memvariasikan tiga variabel bebas yaitu, kecepatan putar spindle 280 rpm dan 360 rpm, sudut potong utama pada pengujian tahap pertama 70o dan 90o, pada pengujian tahap kedua 50odan 60o,sedangkan merk pahat yaitu HSS Bohler MO Rapid Ekstra 1200 dan HSS ASSAB 17 Sweden. Berdasarkan hasil pengujian, maka dapat disimpulkan bahwa kecepatan putar spindel dan sudut potong utama berpengaruh terhadap umur pahat. Merk pahat HSS ASSAB 17 Sweden memiliki umur lebih unggul 5,72 menit, dibandingkan merk pahat HSS Bohler MO Rapid Ekstra 1200. Hasil pengujian diperoleh persamaan umur pahat Taylor, untuk pahat HSS Bohler MO Rapid Ekstra 1200 yaitu VT0,474 = 37,6 dan untuk pahat HSS ASSAB 17 Sweden yaitu VT0,226 = 32. Umur pahat terbesar berada pada range kecepatan putar spindel 285 rpm, dan sudut potong utama 50o, dengan nilai umur pahat sebesar 160 menit. Umur pahat optimum tidak dapat ditemukan, karena semakin kecil sudut potong utama dan semakin rendah kecepatan putar spindel, maka umur pahat semakin besar.
Decreasing In Freshwater Production Due To Vacuum Pressure Decreasing On Multi Effect Distillation Installation Hery Sonawan; Muhamad Deary; Auliansyah Afrianthoni
Mestro Vol 3 No 02 (2021): Edisi Desember
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v3i02.368

Abstract

A case study in a steam power plant has been conducted and reported. There was a case of decrease in the freshwater production rate in multi effect distillation installations that may disrupt the operation of the power plant. The cause was suspected by the drop in vacuum pressure in the evaporation chamber. The study was conducted by studying the MED installation process diagram and performing the theoretical calculations of energy and mass equilibrium in each chamber. To make it easier to find the properties of water in the energy calculation then add ins water_97 in Microsoft Excel is added.Calculations were undertaken in two modes, commissioning period and 2016 operation mode. The difference of the two modes was vacuum pressure level in each chamber. Vacuum pressure level in 2016 operation mode was lower than commissioning mode. The calculation at commissioning mode resulted in a production rate of 133.56 ton/h, while the actual condition at that time was 127 ton/h. Calculations in 2016 operation mode produced a theoretical fresh water production rate of 101.37 ton/h.
Pembangunan Jaringan Distribusi Air Bersih bagi Masyarakat Desa Sonawan, Hery; Hermawan, M. Reza; Sofia, R. Evi; Rohadin, Rohadin; Prihastuty, Endang; Yudisworo, W. Djoko; Subiyanta, Erfan; Siswanto, Agus; Tohasan, Achmad; Wasiran, Wasiran; Heri, Junial
Berdikari: Jurnal Inovasi dan Penerapan Ipteks Vol 12, No 1: February 2024
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/berdikari.v12i1.20276

Abstract

The community service activities in Kaduela Village, which were part of a matching fund program for the year 2023, were executed from July–December 2023 in accordance with the proposed activity plan. The objective of this initiative was to establish a comprehensive water pipeline infrastructure to provide clean water to the inhabitants of Bina Loka and Bina Bakti Hamlet, who lacked access to the numerous springs located in Kaduela Village. Proper and comprehensive piping planning was necessary to provide equitable distribution of water among community members in the two elevated hamlets relative to the water source. The process of addressing issues in Kaduela Village involved several sequential steps. These steps encompassed the collection of primary and secondary data, the depiction of the new piping network on a map of Kaduela Village, the simulation of the new piping network using Epanet software, the construction of the new piping network, and the subsequent commissioning of the system. The chosen pipe network configuration is a dead-end system, which was deemed appropriate for implementation in the Bina Loka and Bina Bakti hamlets, with the aim of providing water services to a total of 58 households in Bina Loka and 15 households in Bina Bakti. The process of pipeline network designing was conducted by Mechanical Engineering students from Universitas Pasundan and Universitas 17 Agustus 1945 Cirebon, under the supervision of their respective supervisors, utilizing the Epanet software. In addition to receiving funding under the 2023 matching fund program, this initiative also garnered comprehensive support from the BUMDES Arya Kamuning as the primary collaborator
Karakterisasi Material Hanger Panjat Tebing Kwintarini, Widiyanti; Sonawan, Hery; Alqurin, Wais
POROS Vol. 19 No. 1 (2023): Jurnal Ilmiah Teknik Mesin POROS
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/poros.v19i1.26654

Abstract

The Rock climbing hangers function as anchors for safety when climbing and are usually used for cliff surfaces that have few natural anchors. The tests that will be carried out in this research are chemical composition testing, hardness testing and metallographic testing. Testing the chemical composition of materials aims to find out what alloys are in imported and local rock climbing hangers. In the material composition test results, the imported rock climbing hangers are Austenitic Stainless Steel 304, because they contain 18.49% Chromium (Cr) and 7.92% Nickel. The local rock climbing hangers are low carbon steel, because they contain 0.056% Carbon © elements. The hardness value of imported rock climbing hangers is greater, namely 292 HVN, compared to local rock climbing hangers which have a hardness value of 136 HVN. Local rock climbing hangers are low carbon steel so they are dominated by the ferrite phase and there is a small amount of pearlite phase. Meanwhile, the imported rock climbing hangers are Austenitic Stainless Steel 304 which have undergone a cold rolling process. The tensile test results show that the imported hanger has a stress value of 7655 N or 729 MPa, higher than the local hanger with a stress value of 2826 N or 259 MPa
Performance Testing of Cross Wind Turbine Model with Capacity of 10 W Achdi, Endang; Sonawan, Hery; Setiadi, Yudi
Mestro: Jurnal Teknik Mesin dan Elektro Vol 6 No 01 (2024): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v6i01.527

Abstract

Wind is a significant potential renewable energy source for electricity generation. Currently, there are two commonly used types of wind turbines: horizontal-axis and vertical-axis wind turbines. Both types are designed to harness the energy from horizontally moving wind. However, in reality, wind often moves erratically, especially in urban areas with tall buildings. To address this, a cross-axis wind turbine model has been developed to capture energy from randomly moving wind. This turbine model has 10 horizontal blades and 5 vertical blades. Previously, performance testing of this wind turbine model used a 60 W capacity dynamometer generator, but the wind turbine's output power didn't reach the required high torque and rotational speed. In this research, a 40 W capacity generator was used to resolve the previous issues. The parameters measured in this testing include wind speed, turbine rotational speed, voltage, and current. The testing was conducted at wind speeds of 5.3 m/s, 5.8 m/s, 6.3 m/s, and 6.8 m/s, with variations in the blade pitch angles set at 20°, 25°, and 30°. The results of the testing and analysis showed that the maximum performance coefficient of this wind turbine was 7.54%, achieved at a wind speed of 6.3 m/s with a blade pitch angle of 25° and a tip speed ratio of 1,08. The higher the wind speed, the shorter the time required to reach a constant rotational speed. At a wind speed of 6.3 m/s with a blade pitch angle of 25°, it took 30 seconds to reach a constant rotational speed.
Performance Test of Commercial Air Coolers with Cooling Pads Made from Banana Midrib Fiber and Honeycomb Sonawan, Hery; Sofia, R Evi
Mestro: Jurnal Teknik Mesin dan Elektro Vol 6 No 01 (2024): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v6i01.530

Abstract

The use of air conditioning equipment in dry season is very necessary. Several users have used Air Conditioner (AC) as air conditioning, although there are users who apply air coolers which are considered more environmentally friendly air conditioning. An air cooler is a tool that cool the air while increasing the humidity. This tool uses the principle of the water evaporation process to cool the air or is called an evaporative cooler. In this paper, the performance of a commercial air cooler that uses a built-in cooling pad in the form of honeycomb is reported and its performance is compared with a cooling pad made from banana midrib fiber material.By implementing experiments on commercial air coolers, experiments were carried out by measuring the airflow in the air cooler using Arduino-based data acquisition. From the experiments, the built-in cooling pad has better performance than banana midrib fiber. The decrease in airflow temperature when using a honeycomb cooling pad reaches 0.8 ℃, slightly higher than banana midrib fiber which reaches 0.6 ℃. Honeycomb saturation efficiency is also higher, reaching 50 – 85% compared to 40 – 70% for banana midrib fiber. Likewise, the EER value of honeycomb is higher than banana midrib fiber. However, banana midrib fiber has great potential if it is used as a cooling pad material, it can be used as an alternative material for evaporative coolers.
Fabrication of a working fluid filler for cooling photovoltaic module Supriyono, Toto; Omar, Ghazali; Tamaldin, Noreffendy; Sonawan, Hery; Novahardi, Mi’raj; Sidik, Fachrul; Sumartono, M. R.; Kasim, M. S.
Prosiding SNTTM Vol 21 No 1 (2023): SNTTM XXI Oktober 2023
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/590MAN

Abstract

This paper discusses manufacturing a special tool (Filler) to fill the working fluid of a photovoltaic module (PVM) cooler. PVM needs to be cooled because its performance is susceptible to temperature changes. An increase in PVM temperature can reduce its performance. Due to their low thermal resistance, heat pipes can be used as PVM coolers. The greatest heat release occurs through the evaporation process of the working fluid within the heat pipe. The filling of the working fluid into the heat pipe is carried out under vacuum pressure, so a special tool or a special filler is required so that the filling of the working fluid corresponds to the specified amount. The filler consists of a liquid reservoir (water tank and support), an isolation valve, a check valve, and a liquid transfer pipe. The manufacture of the filler has been performed in several stages, from material selection to fabrication and assembly of parts. The assembly of the parts of the copper material was performed using the brazing joint method, while for the thread parts, a seal tape was added, combining the top and bottom of the tank using epoxy glue. The water tank support and tables were fabricated using 3D printing. Copper pipes 12.7 mm (1/2 inch) were cut to obtain a length of 50 mm, as many as six pieces, for the acrylic pipe cut along 48 mm. The acrylic sheets were cut in a circle with a diameter of 60 mm, as many as two pieces, and holes and grooves in the middle, in sizes M6 and M16. After the cutting process is complete, assemble the filler parts by connecting the brazing, threading, and gluing processes. The support table has dimensions of 150 mm x 150 mm and a height of 125 mm made using a 3D printing process. The results of the filler function test show that the filler that has been made can be used to vacuum the heat pipe or PVM coolant and fill the working fluid according to the specified amount.
Co-Authors Achdi, Endang Agus Siswanto Alqurin, Wais Auliansyah Afrianthoni Endang Prihastuty, Endang Erfan Subiyanta, Erfan Evi Sofia Hermawan, M. Reza Ir. Gatot Santoso Junial Heri Kasim, M. S. Kwintarini, Widiyanti Muhamad Deary Novahardi, Mi’raj Omar, Ghazali rohadin, rohadin Sidik, Fachrul Sumartono, M. R. Tamaldin, Noreffendy Tohasan, Achmad Toto Supriyono, Toto W. Djoko Yudisworo Wasiran, Wasiran Wawan Yudi Setiadi