Borobudur Engineering Review最新文献

{"title":"Real-Time Monitoring of a PV-Based Solar Power System in a South-Western Nigerian City using LABVIEW","authors":"M. Lawal, O. Olaniran, Babatunde Zaccheus Olaniyi","doi":"10.31603/benr.8422","DOIUrl":"https://doi.org/10.31603/benr.8422","url":null,"abstract":"Understanding what is obtainable from a PV-based solar power system is key to proper sizing of the system. The parameters that are important are the time range available for energy delivery from the panel, time at maximum charging current and the available charging current. To determine these parameters, this work sets up a complete PV-based solar system that was interfaced with National Instrument myDAQ (NI myDAQ) and LABVIEW program for data collection for a specific period of time.  The collection periods were nineteen (19) days which cuts across days in September to November. The data collected are the time stamps, charging current and battery voltage. The study outcome reveals that the average time range for the delivery of energy from the solar module for those periods are 7:24 am to 5:31 pm. The average time at maximum charging current is 12:32 pm. The maximum charging current recorded is 0.509 A, which is 89.3 percent of the panel’s current at maximum power.","PeriodicalId":330295,"journal":{"name":"Borobudur Engineering Review","volume":"98 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139356513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved Engine Performance Using Ozone Generator","authors":"Herlang Anantama, Erika Achmad Fuad, Budi Waluyo, S. Saifudin","doi":"10.31603/benr.9083","DOIUrl":"https://doi.org/10.31603/benr.9083","url":null,"abstract":"An increase in the number of vehicles today will result in an increase in fuel oil consumption and emission pollution. Therefore, it is necessary to optimize for fuel oil economy and emission reduction by improving engine performance. Improving engine performance can be done through several factors, including; with compression ratio, volumetric efficiency and fuel quality. The purpose of this study is to prove that with the addition of ozone (O3) the combustion process will be more reactive than oxygen (O2) so that it can produce faster and more complete combustion, This study will convert oxygen (O2) into more reactive ozone (O3) by using a 15 g/h plasma plasma generator ozone installed on an air filter. Engine performance testing includes engine power and torque using a 50L super dyno type dynamometer chassis. The test results showed, with ozone generator engine torque increased from 0 – 0.5 Nm and increased engine power from 0 – 0.4 KW compared to without using an ozone generator. Nevertheless, the use of ozone (O3) at a high equivalent ratio can lead to knocking","PeriodicalId":330295,"journal":{"name":"Borobudur Engineering Review","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139356577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Pemilihan Supplier Bahan Baku Kertas dengan Metode Analytical Hierarchy Process Menuju E-Supply Chain Management di PT Papertech Indonesia Unit II","authors":"Moehamad Aman, Yuliyani Yuliyani, Yun Arifatul Fatimah","doi":"10.31603/benr.9084","DOIUrl":"https://doi.org/10.31603/benr.9084","url":null,"abstract":"Papertech Indonesia merupakan pabrik kertas daur ulang (recycled paper) dengan memproduksi beberapa jenis kertas seperti Chip Board, Super Chipboard, Core A dan Core B. Bahan baku utama dalam produksi adalah Old Corugated Container (OCC) dan Mix Waste (MW). Dalam memenuhi kebutuhan produksi, selama 12 hari perusahaan harus menyediakan bahan baku utama sebanyak 360.000 kg yang dipenuhi oleh empat supplier. Dalam pengelolaanya timbul permasalahan berkaitan dengan belum optimalnya performa supplier yang mengakibatkan ketidaktepatan jumlah bahan baku yang dipasok ke perusahaan dan sering terjadi keterlambatan pengiriman bahan baku. Permasalahan yang lain adalah belum adanya standar kriteria kualitas bahan baku dan standar harga yang ditetapkan oleh perusahaan sehingga kualitas bahan baku tidak terjamin. Penelitian ini bertujuan untuk memilih supplier bahan baku kertas terbaik dengan menggunakan model kriteria quality, cost, delivery, flexibility, resposiveness dan membuat model e-supply chain management untuk mempermudah pemilihan supplier secara otomatis. Hasil studi pustaka dan brainstorming dengan perusahaan menghasilkan lima kriteria dan dua belas subkriteria yang dipertimbangkan dalam menentukan supplier terbaik di PT Papertech Indonesia. Metode yang digunakan dalam penelitian ini adalah Analytical Hierarchy Process (AHP) untuk menghitung skala rasio dan bobot masing-masing kriteria dan subkriteria dari supplier. Hasil analisis menunjukkan bahwa supplier Sawah Besar menjadi prioritas pertama dalam pemilihan supplier dengan bobot 0.4483, disusul supplier UD Sregep dengan bobot 0.2123, kemudian supplier Cahyo Kertas dengan bobot 0.2084 dan yang terakhir adalah supplier Fada Indonesia dengan bobot 0.1320. Hasil pembobotan AHP digunakan untuk mendesain model e-supply management. Dengan model pengembangan E-SCM dapat memudahkan bagian purchasing dalam pembelian bahan baku.","PeriodicalId":330295,"journal":{"name":"Borobudur Engineering Review","volume":"25 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123658845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kajian Ergonomi Sikap Kerja Pengrajin Gerabah di Sentra Gerabah, Klipoh, Borobudur","authors":"Oesman Raliby Almanan, Faisa Nisa Ulinuha","doi":"10.31603/benr.9087","DOIUrl":"https://doi.org/10.31603/benr.9087","url":null,"abstract":"Usaha  pembuatan gerabah di Dusun Klipoh, Desa Karanganyar, Borobudur, Magelang terus dipertahankan bukan semata mata dari sisi ekonominya, akan tetapi lebih dari sisi tradisi, budaya, dan edukasi.  Namun demikian pengerjaan yang dilakukan dengan cara-cara yang sangat tradisional dengan menggunakan peralatan ala kadarnya tentu berpotensi terhadap resiko Kesehatan mereka, meskipun cara-cara tersebut lebih mengedapankan cara-cara orisinalitas para pendahulunya. Kajian ini bertujuan untuk menganalisis tingkat kenyamana pekerja yang umumnya dilakukan oleh pekerja wanita dengan usia yang sudah rentan. Metode yang digunakan pada kajian ini menggunakan pendekatan Nordic Body Mapping untk mengetahui tingkat severity dan frekwensinya serta menggunakan pendekan QEC maupun OWAS untuk mengukur sikap kerja mereka terkait dengan potensi WMSDs, serta menggunakan %CLV untuk menilai tingkat berat ringannya beban pekerjaan. Hasil yang diperoleh dalam kajian ini menunjukkan bahwa peta keluhan dengan menggunakan NBM tersrbar pada bagian Leher, Bahu, punggung dan kaki. Sedang untuk penilaian sikap kerjanya. Berdasarkan jenis pekerjaan yang mereka lakukan, terdapat10 postur kerja yang dianalisis dengan OWAS, ditemukan  (10%) postur kerja yang termasuk level 1, (50%) postur kerja yang termasuk level 2 dan  (30%) postur kerja yang termasuk level 3. Postur kerja yang termasuk kategori level 3 terjadi pada proses 1 tahapan proses 2 dan proses 3 tahapan proses 1 dan 2. Berdasarkan kuisioner QEC terdapat  (10%) termasuk kategori level 1, (80%) termasuk kategori level 3 dan  (10%) termasuk kategori level 4. Sedangkan hasil perhitungan %CVL menunjukkan bahwa tidak terjadi kelelahan pada para pekerja karena nilai dibawah 30%, sehingga tidak memerlukan tindakana apa-apa. Berdasarkan hasil penelitian yang dilakukan, dapat disimpulkan bahwa metode kerja para perajin memerlukan perhatian dan tidakan perbaikan segera. Namun demikian dilihat dari beban kerja yang dilakukan tidak menunjukkan tingkat beban kerja yang berat.","PeriodicalId":330295,"journal":{"name":"Borobudur Engineering Review","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130806272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solar-powered seawater desalination: A contribution to provide energy-efficient clean water","authors":"W. Widjonarko, Gamma Aditya Rahardi, Bayu Rudiyanto, Ahmad Ishamul Ayady Akma, Abdelrahim Ahmed Mohammed Ate","doi":"10.31603/benr.9042","DOIUrl":"https://doi.org/10.31603/benr.9042","url":null,"abstract":"This study focuses on developing a prototype for a seawater desalination system powered by solarpanel. The desalination process is heated by a solar collector and 150 WP solar panel. The primaryobjective is to design, develop, and evaluate the prototype's efficacy, affordability, and scalability.The efficiency was measured by the quantity of freshwater produced per unit of solar energy. Ofthe three distillation tests, it was determined that the addition of a heater enhanced theperformance of the system. However, the overall efficiency was limited due to the solar panel andcollector's low heat output. A positive correlation was observed between irradiance andtemperature, but incomplete evaporation indicated the need for additional research to optimizethe process. The system consisted of a solar collector, a heater, and a distillation apparatus. Threedistillation tests revealed that the addition of a heater improved the system's performance,resulting in a maximum achievable efficiency of 0.99% and the production of 16 ml of fresh water.This study demonstrates the potential for renewable energy sources to power seawaterdesalination and lays the groundwork for future sustainable desalination technologies despite itslimitations.","PeriodicalId":330295,"journal":{"name":"Borobudur Engineering Review","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114571193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Heat Loss on the Working Index of Electric Arc Furnace (EAF)","authors":"I. Okediran, O. Adetunji, B. Adeboye, A. Adefajo","doi":"10.31603/benr.7857","DOIUrl":"https://doi.org/10.31603/benr.7857","url":null,"abstract":"Day in day out of human life the use of metal is inevitable, metals are needed for different purposes such as  in construction of bridges houses, roads etc. but despite the availability of huge amount of metal, it does not meet the global demand thus this paper investigate the effect of reduction of power of heat loss on the cost of production of electric arc furnace. In order to achieve maximum precision during production, getting product at relatively reduced price has remained a major challenge to the scientists. The experiment was conducted at industrial scale whereby power of heat loss was varied from 7.707- 4.624 MW while energy consumption fell from 0.5463 to 0.5317 MW-Hour per ton and productivity q tremendously increased from 253.0 ton to 254.0 ton per hour . Data used were collected from active furnace in Zerepaves Metallurgical plant, Russia and further analyzed with software package for accuracy","PeriodicalId":330295,"journal":{"name":"Borobudur Engineering Review","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134639238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Komparasi Kinerja AC Kendaraan dengan Menggunakan Refrigeran R-134a, dan R-290","authors":"Dimas Bayu Hindratmo, Bagiyo Condro Purnomo, Akbar Satrio Wicaksono, Ilham Habibi","doi":"10.31603/benr.8898","DOIUrl":"https://doi.org/10.31603/benr.8898","url":null,"abstract":"The development of vapor compression refrigeration systems currently depends on the issue of environmental problems related to ozone layer depletion (ODP) and global warming potential (GWP). In addition to environmental issues, low energy use is also in the spotlight of researchers. To solve the problem of refrigeration development, natural refrigeration, especially hydrocarbons, is the focus of attention. Hydrocarbons are refrigerants that have excellent properties to be natural refrigerants. This study aims to compare the performance of refrigerant R-134a with R-290. The research used a standard vapor compression refrigeration system with a TEV-type expansion valve. The system performance is seen through compression, refrigeration effect, and COP with variations in compressor rotational speed of 1000 rpm, 1500 rpm, and 2000 rpm. The results showed that the compression work, refrigeration effect, and coefficient of performance (COP) of R-290 had a more excellent value. R-290 produces the highest compression work at a 2000 rpm compressor speed of 33.34 kJ/kg for the refrigeration effect at 1000 rpm of 353.33 kJ/kg and COP at 1500 rpm 12.32.","PeriodicalId":330295,"journal":{"name":"Borobudur Engineering Review","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128210349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kebijakan Perawatan Pompa Sentrifugal Di Instalasi Sumber Mata Air Kanoman I PDAM Kota Magelang","authors":"Eko Muh Widodo, Afan Rifa'i, D. Prastiawan","doi":"10.31603/benr.7232","DOIUrl":"https://doi.org/10.31603/benr.7232","url":null,"abstract":"Perusahaan Umum Daerah  Air Minum  (PDAM) Kota Magelang merupakan salah satu unit usaha milik Pemerintah Daerah Kota Magelang yang bergerak dalam jasa mendistribusikan air bersih bagi masyarakat Kota Magelang .  Dalam  usahanya untuk memenuhi kebutuhan air bersih pelanggannya, PDAM menggunakan 5 mata air yang salah satunya adalah mata air kanoman di Sudimoro, Candimulyo, Kabupaten  Magelang . \u0000Secara geografis letak mata air tersebut ketinggiannya berada dibawah  kota Magelang, maka pendistribusian air bersih dari mata air kanoman kepada pelanggan menggunakan sistem pompa sentrifugal. Untuk menjamin  fungsi pompa beroperasi secara optimal maka perlu kebijakan perawatan  agar  fungsi sistem tersedia. Metode Failure Mode Effect Analysis (FMEA), Logic Tree Analysis (LTA) dan Maintenance Task digunakan untuk menganalisis komponen agar fungsi sistem dapat dijamin ketersediaannya. Berdasarkan analisis dapat diputuskan kebijakan breakdown maintenance dan tindakan perawatan dengan metode yang lain.","PeriodicalId":330295,"journal":{"name":"Borobudur Engineering Review","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115580535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pencegahan Keluhan Musculoskeletal Disorders Pada Pekerja Dengan Metode Rula Untuk Peningkatan Produktivitas Kerja (Literature Review )","authors":"Puput Dwi Cahyanti, M. Imron Rosyidi","doi":"10.31603/benr.6295","DOIUrl":"https://doi.org/10.31603/benr.6295","url":null,"abstract":"Musculoskeletal disorders (MSD’s) adalah keluhan pada bagian-bagian otot skeletal yang dirasakan oleh seseorang mulai dari keluhan sangat ringan sampai sangat sakit. Apabila otot menerima beban statis secara repetitif dan dalam waktu yang lama, akan dapat menyebabkan keluhan berupa kerusakan pada sendi, ligamen, dan tendon (Novianti & Tanjung, 2016). Musculoskeletal Disorder’S (MSD’s) merupakan penyakit akibat kerja yang paling banyak terjadi dan diperkirakan mencapai 60% dari semua penyakit akibat kerja. Kontribusi manusia sebagai sumber tenaga kerja manual masih dominan dalam dunia industri di Indonesia. Istilah yang digunakan untuk menggambarkan kegiatan tersebut adalah aktivitas Manual Material Handling (MMH). Aktivitas MMH dan postur kerja yang tidak baik dapat mengakibatkan keluhan sakit pada anggota tubuh pekerja. Cedera yang diakibatkan oleh aktivitas manual handling jarang sekali bersifat fatal, akan tetapi masih banyak kecelakaan kerja seperti terkilir, ketegangan otot terutama pada bagian punggung dan pinggang yang disebabkan karena pengaplikasian pekerjaan yang tidak benar atau pekerjaan dalam waktu yang lama dan berulang. Tujuan dari penelitian ini yaitu untuk mengetahui postur kerja dan aktivitas MMH pada pekerja berdasarkan metode Rapid Upper Limb Assessment (RULA) untuk peningkatan produktivitas kerja. Penelitian ini menggunakan metode literature review dengan mencari artikel melalui portal google scholar. Kata-kata kunci yang digunakan untuk pencarian yaitu “postur kerja, ergonomi, metode Rula, produktivitas”. Keluhan yang paling banyak dirasakan oleh pekerja yaitu pada punggung, leher, bahu, pergelangan tangan. Berdasarkan hail perhitungan RULA dapat disimpulkan bahwa semua aktivitas pekerja mendapatkan skor RULA diatas 3 artinya perlu dilakukan investigasi dan perubahan postur kerja segera. Aktivitas MMH memiliki pengaruh yang signifikan terhadap meningkatnya keluhan pada pekerja serta peningkatan produktivitas kerja. Saran pada penilitian ini bagi perusahaan yang melakukan aktivita MMH perlu melakukan pengukuran postur kerja dan perbaikan fasilitas kerja","PeriodicalId":330295,"journal":{"name":"Borobudur Engineering Review","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122281464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling of The Effect of Waste Management in Ikeja Area of Lags State Nigeria","authors":"Taiwo S. Amosun, W. Adedeji","doi":"10.31603/benr.7143","DOIUrl":"https://doi.org/10.31603/benr.7143","url":null,"abstract":"There is no doubt that waste in all ramifications disturbs the balance of nature. As a result of this, it will be of great importance to mankind if a way is devised to foretell how the effectiveness or otherwise of waste management can affect the lives of those living in an area. This work considers waste management in a holistic view and attempts to develop a model for the relationship between waste management/disposal method and its effect on the people living within a defined geographical location. Lagos which has a relatively high daily per capital domestic waste generation rate in Nigeria has not yet established a comprehensive waste management system. A municipal solid waste management is designed based on Nigerian situations at the end of which a model y=-0.6228x + 56.31 was obtained. This predicts that as waste disposal method becomes appropriate and adequate, the occurrence of different types of diseases decreases rapidly. This may be a very useful tool of waste management for the Government and an easier means of ensuring a healthier living environment for the masses.","PeriodicalId":330295,"journal":{"name":"Borobudur Engineering Review","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115886305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}