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All Journal Jurnal Energi Dan Manufaktur Jurnal Rekayasa Mesin Mechanical Engineering for Society and Industry Abdimas Altruis: Jurnal Pengabdian Kepada Masyarakat Widya Teknik
I Gusti Ketut Puja
Universitas Sanata Dharma
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation Other

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Unjuk Kerja Destilasi Air Energi Surya I Gusti Ketut Puja; FA. Rusdi Rusdi Sambada
Jurnal Energi Dan Manufaktur Vol 5 No 1 (2012): Oktober 2012
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.737 KB)

Abstract

Clean water is daily needs for society, especially for drinking and cooking. Existing water sources oftenalready contaminated with dirt, salt (sea water), heavy metals, bacteria or other harmful materials. Thewater in this condition can be detrimental to health if used for drinking or cooking, hence the water has tobe rarefied first. There are many ways to purify contaminated water, one way is by distillation. Distillationprocess requires heat to evaporate the contaminated water before condensed and produce clean water.Thermal energy for distillation process can come from many sources, one of which is solar energy. Thepurpose of this study is to investigate the performance difference between solar powered water distillationthat uses parabolic collector and reflector with solar powered water distillation without the use of paraboliccollector and reflector (basic form). Distillated water will be tested in the laboratory to determine whetherthe water quality qualifies as drinking water or not after distillation process. Equipment which used in thisstudy consisted of contaminated water tanks, distillation apparatus and distillated water storage. Distillationapparatus has a length of 1 meter and 0.5 meters wide. There are three variations on the distillationapparatus used i.e. distillation with reflector, distillation with parabolic collector and distillation withoutreflector and collector (basic form). Distillation appliance is equipped with water depth indicator. Waterdepth inside the distillation varied i.e. 5 mm, 7.5 mm, and 10 mm. The results showed a maximum ofdistilled water produced is 0.850 liter in 2 hours with an average efficiency of 49.2% produced by thedistillation using reflector with 5 mm water depth. Maximum of distilled water yield with 10 mm water depthis 0.20 liter in 2 hours produced by distillation using parabolic collectors. Laboratory test stated that qualityof distilled water can be accepted as drinking water.
Studi Sifat Impak Ketahanan Aus dan Koefisien Gesek Bahan Komposit Arang Limbah Serbuk Gergaji Kayu Glugu Dengan Matrik Epoxy I Gusti Ketut Puja
Jurnal Energi Dan Manufaktur Vol 4, No.2 Oktober 2010
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Waste of sawdust materials of coconut wood is potential to be used as engineering materials of technology products, such asbrake pad for light vehicle. Some important properties of materials to be used as a brake pad is wear resistance, impactstrength and the friction coefficient. This study aims to investigate the coefficient of friction, wear and impact properties ofcomposite materials of coconut wood charcoal sawdust with epoxy matrix. Coconut wood charcoal sawdust produced attemperatures varies from 200, 300, 400 and 500 degrees Celsius for 2 hours respectively. The charcoal was tested for carboncontent. The charcoal with high carbon content then is used as filler composites. Composite is manufactured by hydraulic presscast method with content of filler (particle) varies from 28, 37, 46 and 55 percent (v/v). Testing was conducted on the coefficientof friction, wear, and Charpy impact. The results are verified with the properties of the commercial brake pad. Charcoal isproduced at a temperature of 200 and 300 degrees Celsius has the highest carbon content (91.98% and 89.64%). Compositefriction coefficient increases with increasing particle content. The largest friction coefficient (0.445) occurred in the compositewith particles content about 55 percent (v/v). Composite friction coefficient increases with increasing content of particleswhere the value is greater than the commercial brake pad (0.34). Composite with particle content of 46 percent has the lowestspecific wear rate, about 4.13 mm2/kg (the best wear resistance). This value still higher than the commercial brake pad (2.04mm2/kg). Composite with particles content of 37 percent has the fracture energy about 0.27 joules, and the thoughness about2.87 kJ/mm2. Composite with particle content of 37 percent was likely can as a brake pad, but the wear resistance still lowerthan the commercial products
Destilasi air energy surya dengan energy recovery menggunakan metode kapilaritas I Gusti Ketut Puja; Sudi Mungkasi; FA Rusdi Sambada
Jurnal Energi Dan Manufaktur Vol 9 No 2 (2016): Oktober 2016
Publisher : Department of Mechanical Engineering, University of Udayana

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Abstract

Abstrak:Penelitian ini bertujuan membuat prototipe alat destilasi energi surya sederhana menggunakan energy recovery dengan metodekapilaritas untuk masyarakat di daerah yang kesulitandalammendapatkan air minum. Alat destilasi air energi surya yang akandibuat harus memenuhi kriteria (1) dapat menghasilkan air yang layak dikonsumsi dengan kapasitas yang memadai untuk satukeluarga (sekitar 6,5 liter/ hari), (2) tidak memerlukan banyak perawatan, mudah dioperasikan dan dirawat oleh masyarakat dan(3) mampu dibuat dengan teknologi yang ada di daerah. Salah satu faktor yang sangat mempengaruhi efisiensi adalahkonsentrasi kelebihan uap pada alat distilasi selama proses penguapan air.Penggunaan kondensor pasif sebagai energyrecovery adalah salah satu cara yang efektif dan efisien untuk mengatasi masalah konsentrasi uap berlebih. Perbedaan kinerjadistilasi air energi surya dengan dan tanpa penambahan sistem pemulihan energi telah diselidiki. Hasil penelitian menunjukkanbahwa hasil air destilasi terbanyak pada variasi tanpa menggunakan pendingin kaca dan reflektor dengan ketinggian air bak 0.5cm yakni 4,38 liter/ (m2.hari). Efisiensi maksimum dan efisiensi rata-rata yang diperoleh pada variasi ini adalah 49,6% dan44,6%. Prosentase uap maksimum dari bak yang dapat masuk kedalam kondensor sebesar 38% yakni pada variasimenggunakan reflektor dengan ketinggian air bak 0.5 cm. Prosentase pemanfaatan panas pengembunan (heat recovery)maksimum dari uap yang masuk kedalam kondensor sebesar 96% yakni pada variasi menggunakan reflektor dengan ketinggianair bak 0.5 cmKata kunci: destilasi air, energisurya, efisiensi, energy recoveryAbstract:This research aims to develop a prototype of simple solar energy distillation using capillarity methods of energy recovery for thecommunities’ whohave difficulty in getting drinking water. Solar energy water distillation equipment to be made must meet thecriteria: (1) can produce water suitable for consumption with sufficient capacity for a small family (about 6.5 liters per day, (2)easily operated and maintained by the community, and (3) able to be made with existing technology in the area. One of thefactors that greatly affect the efficiency is the concentration of excess steam in the distillation apparatus during the process ofevaporation of water. The use of passive condenser as an energy recovery system is one of the effective and efficient way toovercome the problem of the excess vapor concentration. The differences in performance of the solar energy distillation with andwithout the addition of energy recovery system were investigated.The results showed that the distilled water results mostly invariations without using a cooling glass and reflector with a height of 0.5 cm of water tub that is 4.38 liters / (m2.hari).Maximumefficiency and average efficiency obtained in this variation are respectively 49.6% and 44.6%.The maximum percentage of steamfrom the bath to get into the condenser by 38%, occur in the variation using a reflector with a height of 0.5 cm of water tub.Percentage of utilization of condensation heat (heat recovery) maximum of vapor into the condenser is about 96% occur in thevariation using a reflector with a height of 0.5 cm of water tubKeywords: water distillation, solar energy , efficiency, energy recovery
PANDANGAN SISWA TERHADAP DESAIN BERBANTUAN KOMPUTER DALAM PELATIHAN SOLIDWORKS DI SMK NUSANTARA KUDUS Andreas Prasetyadi; I Made Wicaksana; Budi Setyahandana; I Gusti Ketut Puja; Stefan Mardikus; Raden Benediktus Dwiseno Wihadi; Heryoga Winarbawa; Rines Rines
ABDIMAS ALTRUIS: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 1 (2022): April 2022
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/aa.v5i1.3892

Abstract

An activity of collaboration between Mechanical Engineering Department of Sanata Dharma University and SMK Nusantara Kudus was conducted. The percepetion of High School Students of SMK Nusantara Kudus about Computer Aided Design was measured during the Solidworks Training as the main activity. Pre- and Post-Questionnaires were delivered among the 20 students joining the activity. Nineteen of them returned the questionnaires of 10 positive statements with 3 conditions of answers i.e. agree, disagree, and undecided. The results show that the students mostly are interested in designing manually and computer based. It also mentions that they appreciate CAD skills as their important future work skill. The activity did not affect the interest of the students in term of designing but helped them to be more engaged to the CAD.
Efek Karbon Nano Pada Efisiensi Distilasi Air Energi Matahari I Gusti Ketut Puja; FA. Rusdi Sambada
Jurnal Rekayasa Mesin Vol 17, No 2 (2022): Volume 17, Nomor 2, Agustus 2022
Publisher : Jurusan Teknik Mesin - Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v17i2.3106

Abstract

Karbon aktif mempunyai sifat dapat menyerap panas energi matahari dengan baik. Pada ukuran yang sangat kecil karbon aktif akan mengambang dalam air (tidak tenggelam). Karena posisi mengambang, maka energi matahari dapat diterima karbon aktif tanpa terhalang air kotor. Ukuran karbon aktif yang sangat kecil juga menyebabkan jumlah luasan kontak antara karbon aktif dan air menjadi besar. Gaya elektrostatik yang ada pada karbon nano menyebabkan meningkatnya koefisien konveksi antara permukaan karbon aktif dengan air. Luasan kontak yang besar dan meningkatnya koefisien konveksi menyebabkan perpindahan panas dari karbon aktif kedalam air yang terjadi secara konveksi menjadi meningkat. Hal tersebut dapat meningkatkan proses penguapan sehingga efisiensi distilasi juga meningkat. Dengan kata lain karbon nano dapat meningkatkan/ menghasilkan uap atau berfungsi sabagai vapor generator. Karakteristik karbon nano sebagai vapor generator belum pernah diteliti. Selain itu pada kondisi bagaimana (ukuran dan konsentrasi) dari karbon nano yang akan memberikan efek terbaik sebagai vapor generator pada proses distilasi air dengan energi matahari belum diketahui. Penelitian ini bertujuan melakukan analisis sifat- sifat karbon nano sebagai nano vapor generator pada proses distilasi air energi matahari. Penelitian dilakukan secara eksperimen di dalam laboratorium menggunakan model distilasi jenis bak dan lampu pemanas sebagai simulator radiasi matahari. Eksperimen dilakukan dengan mevariasikan ukuran partikel karbon nano yakni besar (S1), sedang (S2) dan kecil (S3) dan konsentrasi karbon nano (50, 100 dan 300 ppm) pada proses distilasi. Hasil penelitian menunjukkan bahwa karbon nano pada konsentrasi sebesar 50 ppm dengan ukuran karbon nano terkecil yakni S3 (karbon nano dengan proses 3 juta siklus) menghasilkan peningkatan efisiensi dan air distilasi terbesar yakni 41% dibandingkan distilasi tanpa karbon nano.
Efek kapilaritas absorber pada unjuk kerja destilasi air energi surya jenis vertikal Doddy Purwadianto; FA Rusdi Sambada; I Gusti Ketut Puja
Widya Teknik Vol. 16 No. 2 (2017)
Publisher : Fakultas Teknik, Universitas Katolik Widya Mandala Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33508/wt.v16i2.1659

Abstract

Permasalahan umum pada alat destilasi air energi surya jenis vertikal saat ini adalah masih rendahnya efisiensi yang dihasilkan. Penelitian ini akan meneliti pengaruh sifat kapilaritas absorber terhadap efisiensi yang dihasilkan. Tujuan penelitian ini adalah (1) membuat model alat destilasi air energi surya jenis vertikal, (2) menganalisis pengaruh sifat kapilaritas absorber terhadap efisiensi yang dihasilkan alat destilasi air energi surya jenis vertikal dan (3) menganalisis pengaruh temperatur kaca penutup dan jumlah energi surya yang diterima terhadap efisiensi yang dihasilkan alat destilasi air energi surya jenis vertikal. Alat destilasi air energi surya pada penelitian ini terdiri dari 4 (empat) konfigurasi sebagai berikut: (1) Alat destilasi berpendingin udara tanpa reflektor dengan aliran kapilaritas alami dan paksa, (2) alat destilasi berpendingin air tanpa reflektor dengan aliran kapilaritas alami dan paksa, (3) alat destilasi berpendingin air dengan reflektor dengan aliran kapilaritas alami dan paksa dan (4) alat destilasi jenis konvensional sebagai pembanding. Variabel yang divariasikan adalah (1) jenis aliran kapilaritas sebanyak 2 variasi (alami dan paksa), (2) temperatur kaca penutup, divariasikan dengan mevariasikan fluida pendingin kaca sebanyak 2 variasi (udara dan air) dan (3) jumlah energi surya yang diterima sebanyak 2 variasi (divariasikan dengan menggunakan dan tidak menggunakan reflektor). Hasil penelitian menunjukkan pada variasi pendingin air dan reflektor alat destilasi vertikal dengan aliran kapilaritas alam menghasilkan efisiensi teoritis 14,69 %, efisiensi aktual 5,76 % dan air destilasi 0,87 liter/m2 per hari pada kondisi yang sama efisiensi aktual alat destilasi konvensional mencapai 27,56 % dan air destilasi 1,85 liter/m2 per hari. Alat destilasi vertikal dengan aliran kapilaritas paksa menghasilkan efisiensi teoritis 47,26%, efisiensi aktual 26,26% dan air destilasi 1,12 liter/m2 per hari pada variasi pendingin udara. Pada kondisi yang sama alat destilasi konvensional dapat menghasilkan efisiensi teoritis sebesar 32,63% dan air destilasi 1,34 liter/m2 per hari.
The analysis of semiconducting charateristic of rice husk-based carbon nanomaterial bio-activated by pineapple peel juice Dwidiani, Ni Made; Suardana, Ngakan Putu Gede; Wardana, I Nyoman Gede; Nugroho, Willy Satrio; Puja, I Gusti Ketut; Septiadi, Wayan Nata; Santhiarsa, I Gusti Ngurah Nitya; Tista, Si Putu Gede Gunawan
Mechanical Engineering for Society and Industry Vol 5 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12733

Abstract

This study investigates the synthesis and characterization of semiconducting materials derived from rice husk bio-activated by pineapple peel juice, presenting an eco-friendly and sustainable approach. The organic photo-active semiconducting material from rice husk ash (RHA) is synthesized. RHA was activated by immersion in the pineapple juice solution. Distinct structural disparities among RHA, Sunken Carbon nanomaterial (SCNM), and Floating Carbon Nanomaterial (FCNM) materials are revealed through SEM imaging, showcasing the tailored nature of each material. The SEM images also indicate the role of bromelain from the pineapple juice to provide defects on the RHA carbon surface. The crack on the nano particles on the surface of SCNM and FCNM were formed due to the bromelain electrostatic interaction with the surface. Elemental analysis indicates a higher probability of CuO and Si presence in SCNM, suggesting its potential for semiconductor extraction. The Cu to Si ratio implies photoactivity, confirmed by UV-Vis characterization showing absorption peaks in the UV region. FTIR analysis highlights enhanced polar interactions in SCNM and FCNM, attributed to the activation process involving bromelain in pineapple juice. The photoelectric effect testing shows FCNM and SCNM generates more electrical current as exposed to light which. The current was generated due to the electron transport phenomenon of CuO and Si content triggered by photons. The study provides insights into the materials' molecular structures and potential applications in sensors, energy devices, and semiconductor-related technologies, leveraging the unique properties of bio-derived nanomaterials for practical implementation.
Co-Authors A. Prasetyadi Budi Setyahandana Doddy Purwadianto Dwidiani, Ni Made Heryoga Winarbawa I Gusti Ngurah Nitya Santhiarsa I Made Wicaksana I Nyoman Gede Wardana NPG Suardana Raden Benediktus Dwiseno Wihadi Rines Rines Rusdi Sambada Si Putu Gede Gunawan Tista Stefan Mardikus Wayan Nata Septiadi Willy Satrio Nugroho