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All Journal Rotasi LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Prosiding Semnastek JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Pengabdian UntukMu NegeRI at-tamkin: Jurnal Pengabdian kepada Masyarakat Jurnal Fisika : Fisika Sains dan Aplikasinya ARMATUR : Artikel Teknik Mesin dan Manufaktur
Verdy A Koehuan
Program Studi Teknik Mesin, Fakultas Sains Dan Teknik, Universitas Nusa Cendana
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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KOMBINASI UV SOLAR DRYER DAN SOLAR AIR HEATER UNTUK PENGERINGAN IKAN Gusnawati Gusnawati; Verdy A. Koehuan; Laurensius Longo Sogen
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 8 No 1 (2023): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v8i1.11829

Abstract

Fish as a source of animal protein is a fishery commodity that is prone to quality deterioration and spoilage after the fish is caught, so it needs fast, precise and correct handling to keep its quality in the hands of consumers. There for it is necessary to have a process that extends the durability through drying. One drying alternative is to use a Solar Air Heater with an Ultra Violet (UV) Solar Dryer drying house by making a building made of transparent material that functions as an insulator so that the solar irradiation trapped in the building will increase its temperature. The accumulated heat is used to dry the fish. Sardines that have just been displayed are put into the drying chamber with various loads of 22.23 kg, 14.82 kg and 7.41 kg. The energy source for drying is from sunlight with the Solar Air Heater system. The results show that drying efficiency and thermal efficiency increase with the addition of drying load. The highest values ​​of drying efficiency and drying house efficiency occurred at the mass load of 22.23 kg of fish at 13.17% and 50.57% with the lowest specific energy consumption (KES) of 18947.421 kJ/kg. The average temperature and temperature difference both in the solar air heater and in the drying chamber increase with the addition of the drying load. This temperature increase increases the drying rate which can reduce the drying time.
SIMULASI COMPUTATIONAL FLUID DYNAMICS (CFD) RUMAH PENGERING UMBI PORANG SISTEM HYBIRD MELALUI VARIASI BEBAN mario ardy bili; Verdy A. Koehuan; Jahirwan Ut Jasron
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 12 No 01 (2025): April 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v12i01.8850

Abstract

Pengeringan produk pertanian khususnya adalah kadar krim dari produk sampai keseimbangan udara tercapai dengan lingkungan atau tingkat kelembaban di mana jamur, serangga dan perusak tidak dapat aktif lagi. Pengeringan merupakan salah satu proses pasca panen yang umum dilakukan pada berbagai produk pertanian yang bertujuan untuk menurunkan kadar air bahan sampai pada tingkat yang aman untuk disimpan atau digunakan pada proses lainnya. Proses pengeringan hasil pertanian yang banyak dilakukan oleh petani Indonesia adalah dengan pengeringan. Dengan mensimulasikan distribusi dan pola aliran udara, akan dimungkinkan untuk menentukan desain bangunan beserta penempatan parameternya. Pemanfaatan energi matahari menggunakan plastik ultraviolet.Mengetahui kinerja pengeringan dan distribusi suhu di ruang pengujian melalui pengujian menggunakan umbi porang dan tanpa umbi porang dari hasil simulasi perangkat lunak Gambit 2.4.6 dan Ansys 17.0 : Student Version. Simulasi pola aliran udara panas yang terjadi pada rumah pengering menggunakan model simulasi CFD melalui variasi beban. pada Pengeringan perlu diketahui dengan mensimulasikan Computational Fluid Dynamics (CFD). Salah satu keuntungan dari analisis CFD, antara lain, memberikan pemahaman yang rinci tentang distribusi aliran panas dan massa, dan mendukung untuk mengubah geometri.
PERANCANGAN SISTEM INSTALASI PERPIPAAN IRIGASI PADA LAHAN BUDIDAYA TANAMAN HOLTIKULTURA Sam Rudian Rivaldo Fanggidae; Verdy A. Koehuan; Jack C.A. Pah
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 12 No 01 (2025): April 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v12i01.19928

Abstract

Penelitian ini dilakukan untuk perancangan sistem instalasi perpipaan irigasi tetes pada lahan pertanian budidaya tanaman hortikultura yang dilakukan pada lahan terbuka dengan ukuran 40x80 meter dengan Sumber air untuk penyiraman tanaman holtikutura pada lahan terbuka adalah bak penampung air dengan ukuran 12x8 meter. tujuan penelitian adalah untuk merancang sistem instalasi perpipaan pada jaringan irigasi tetes pada lahan pertanian budidaya tanaman hortikultura. Perancangna ini mengunakan metode perancangan, Metode perancangan dibutuhkan untuk memudahkan perancang untuk merancang dan mengembangkan rancangan. Tahapan-tahapan pada metode rancangan mulai dari pencarian ide rancangan kemudian mencari permasalahan dan tujuan dari rancangan itu. Perancangan system irigasi tetes ini menggunakan dua mode operasi yaitu system tower dan system pompa. System tower memompa air dari bak penampung ke tower kemudian di teruskan ke system jaringan secara bergilir ke masing-masing Jalur A, Jalur B dan Jalur C. Dari hasil analisis yang diperoleh untuk kebutuhan daya dengan menggunakan system tower yaitu 112,5025 W, Sedangkan system pompa tanpa melalui tower yang dapat dioperasikan secara bersamaan kesemua jalur maupun secara terpisah ke Jalur A , Jalur B dan Jalur C. Dari hasil analisis diperoleh kebutuhan daya pompa adalah 350 W Dengan total head 22 m.
PENGUJIAN LEMARI PENGERING KOPRA TIPE KABINET SISTEM HYBRID (SOLAR DRYER PLAT DATAR – HEATER) FERDINAN PUAY; Verdy A. Koehuan; Adi Y. Tobe
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 12 No 01 (2025): April 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v12i01.20101

Abstract

Along with the development of drying process technology, solar energy is used as an energy source whose availability will never run out and this energy can also be used as alternative energy which will be converted into electrical energy, drying It is hoped that using a solar dryer will be able to produce high quality copra and be a form of saving on electrical energy usage. After testing 3 times using direct heating from a solar energy source and 2 variations of heater heating elements with a power of 110 watts and 260 watts respectively, the most efficient results were obtained, namely in testing using a 100 watt heating element on the second day. During the 4 hours of testing, the water content value that came out of the coconut meat reached 22.49% compared to testing on the first and third days. This is caused by changes in environmental temperature (Tl) and environmental humidity (Hl) which affect the temperature conditions in the equipment drying room. For testing using 260 watts of power, the results were not efficient because it has very high power so that the energy stored in the battery cannot work during the 4 hours of drying time.
Pengaruh Penambahan Phasa Change Material (PCM) Terhadap Sistem Penyimpanan Energi Termal Baterai Pasir YARDESH AOETPAH; Matheus M. Dwinanto; Verdy A. Koehuan; Rima N. Selan
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 12 No 02 (2025): Oktober 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v12i02.20103

Abstract

The thermal energy storage system through sand media is one of the energy storage solutions that has great potential to be developed to meet energy needs. PCM is a type of latent heat storage that has been developed as a good thermal energy storage material. The purpose of this study was to analyze the efficiency of thermal energy storage in sand media equipped with phase change material (PCM) stored in a drum container as a sand battery. The results of this study indicate that the use of sand batteries without PCM tends to be low at the beginning of the heating time by the heater element and increases at the end of the heating time. The use of PCM where the PCM changes phase from solid to liquid tends to absorb higher heat than media without PCM so that efficiency increases and tends to be stable until the heat release process is also longer than media without PCM. While in media without PCM, there tends to be a slower increase in thermal efficiency and a shorter time for the heat release process than media with
Automatic Feeder Machine with Water Filter System Untuk Budidaya Ikan Nila Golden R. Modok; Ishak S. Limbong; Verdy A. Koehuan; Murni Pallawagau
LONTAR Jurnal Teknik Mesin Undana (LJTMU ) Vol 12 No 02 (2025): Oktober 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/ljtmu.v12i02.27057

Abstract

The fisheries sector is one of the key drivers of the Indonesian economy. One type of fish that is widely cultivated is tilapia. The market demand for tilapia is increasing annually. However, in general, tilapia farmers still employ conventional methods in fish farming, such as feeding fish and maintaining pond cleanliness. Of course, this method is more tiring and requires a lot of time. The purpose of this study is to design an automatic feeder equipped with a filter system to control fish feeding, in conjunction with a water purification system for fish ponds. The study was conducted by building an automatic feeder machine for automatic feeding and an automatic filter to control the quality of water clarity in the pond. From the test results, the amount of feed dispensed by the automatic feeder in 30 seconds, 40 seconds, 50 seconds, and 60 seconds was 142.2 g, 189.9 g, 231.8 g, and 269.2 g, respectively. The throwing distance and distribution of feed were 3 m and 70 °. The proximity sensor is used to control the availability of feed in the storage tube, providing a warning if the amount of feed is less than the minimum limit. The filter system automatically operates when the water turbidity exceeds 40 NTU
Co-Authors A. Riszal Agustinus Sampealo Aloysius V.P. Piamat Buana, Setiadi Wira Defmit B.N. Riwu Domi K. Dipa Dominggus Godlief Heryson Adoe Eflinda Milo FERDINAN PUAY Fransiskus L. H. Koten Fredrikus M. Bere Golden R. Modok Gusnawati Gusnawati Ishak Limbong Ishak S. Limbong Jack C.A. Pah Jahirwan Ut Jasron Jani F Mandala, Jani F Joy Ferdinand Ludji Kristianus Yosafat Goab Kristomus Boimau Laurensius Longo Sogen Laurensius Nogur Laurensius Nogur Margaretha Kewa Unarajan mario ardy bili Matheus M. Dwinanto Muhamad Jafri Murni pallawagau Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Phillips G. Taka Logo Riky Yonerto Runesi Rima Nindia Selan Sam Budi Sam Rudian Rivaldo Fanggidae Samsul Kamal Sugiyono Sugiyono Thomas J. Hudin Tobe, Adi Yermia Wenseslaus Bunganaen YARDESH AOETPAH Yeremias M. Pell Yoseph P. Ndeo