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I Gede Bawa Susana
Universitas Mataram
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Pengeringan biji jagung menggunakan pengkondisi udara Mulyanto, A.; Mirmanto, M.; Susana, I.G.B.; Alit, I.B.; Nuarsa, I.M.
Dinamika Teknik Mesin Vol 9, No 1 (2019): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v9i1.262

Abstract

This study aims to determine the effect of air velocity on the rate of drying corn. Corn seeds were placed after the evaporator of an air conditioner, so that the air came out of the evaporator entered the drying chamber. The water in the corn was evaporated and sucked by dry cold air and then it was condensed in the evaporator. The results show that the mass of corn seeds decreases with the time; the drying rate also decreases with the time and mass-based drying rates at low air speeds are faster than at high air speed. The air conditioner can be used for drying seeds.
RANCANGAN RUANG PENGERING BERBASIS ERGONOMI MENURUNKAN KELUHAN MUSKULOSKELETAL PERAJIN IKAN Susana, I Gede Bawa
Dinamika Teknik Mesin Vol 6, No 1 (2016): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v6i1.20

Abstract

With  traditional fish drying process,  most possible can cause an unhealthy  working posture , such as a squatting action.   As a consequence , worker will suffer a  musculoskeletal disorders because of not  ergonomic tools and bad working posture. Without ergonomics  working  procedures was found that  the average of   musculoskeletal complaints after working is 52.25 ± 1.03. To solve this ccomplaints, a drying chamber based ergonomics design was built in order to reduce musculoskeletal disorders. Dimensions of the drying chamber were based on anthropometric data of fish craftsmen and the material of drying chamber was by the participatory method. Test was performed on 20 samples and the result showed that the mean rate of  musculoskeletal complaints after working is 38.30 ± 1.30. The ergonomic based design for drying camber application can reduce  the musculoskeletal complaints up to 26.7%.
Uji performance turbin Savonius dengan penambahan konsentrator pada aliran air Alit, I.B.; Mara, I.M.; Susana, I.G.B.; Sapri, S.
Dinamika Teknik Mesin Vol 9, No 1 (2019): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v9i1.261

Abstract

Utilization of water energy is essentially using potential energy and kinetic energy, kinetic energy flow of water which is a transformation of gravitational potential energy is used to drive turbines or waterwheels, Savonius turbine has a good Self Starting so it can rotate the rotor even though the fluid speed is low, the same thing the speed of the water flow has a low speed. The purpose of this research is to know the influence of the number of blades on rotation of rotor (n), Torque (T), Rotor power (P), Coefficient of performance (CP), Efficiency system (ɳs), in this study the number of blades used are 2 blades, 3 blades and blades, the blades are then tested without the use of concentrator and by the addition of concentrator. The results of this study indicate that the turbine without concentrator or by using the addition of concentrator obtained the best performance on the number of blade 3 with average CP of 0.12 and 0.13 efficiency system of 9.83% and 11.75% then with the number of blades 2 with CP averaging of 0.10 and 0.11 of efficiency system of 8.73% and 11.00% and the number of 4 blades with CP averaged 0.06 and 0.07 and efficiency system of 3.91% and 4.76%. Using the addition of concentrator may increase the performance of the turbine in water flow savonius seen from the increasing value of CP and system efficiency at each number of blades tested.
Evaluation of the temperature of the rotary dryer with LPG fuel in drying cherry coffee Alit, I.B.; Susana, I.G.B.; Adhi, I.G.A.K.C.; Mulyanto, A.
Dinamika Teknik Mesin Vol 15, No 1 (2025): Dinamika Teknik Mesin: Jurnal Keilmuan dan Terapan Teknik Mesin
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/dtm.v15i1.968

Abstract

Utilization of rotary dryers with liquefied petroleum gas (LPG) energy sources as an alternative to solar drying, which is highly dependent on the weather. This dryer is applied to small farmers to dry cherry coffee. The results of the study showed that the drying temperature reached an average of 63.92oC to dry a sample of 10 kg of cherry coffee. From testing, this sample still produced a reasonably high outlet temperature of the drying chamber, which was an average of 62.07oC. From this condition, it is possible to increase the amount of cherry coffee to be dried, and further testing is needed. LPG-based rotary dryers are very easy for small farmers. The drying process can be carried out all the time because it does not depend on the weather. In addition, LPG in Indonesia for small farmers is still subsidized, so it is economically affordable. The shorter drying time than solar drying allows small farmers to carry out their production process sustainably. In 20 hours of testing, it was able to reduce the moisture content from 62.84% to 9.95%.
APLIKASI ERGONOMI BERDASARKAN DATA ANTROPOMETRI PEKERJA PADA DESAIN ALAT KERJA Bawa Susana, I Gede; Alit, Ida Bagus; Aryadi, I G.A.K. Chatur Adhi Wirya
Energy, Materials and Product Design Vol. 1 No. 1 (2022): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

A review of the application of ergonomics to design work tools based on worker anthropometric data is carried out to provide information on its use in the production process, especially in micro, small and medium business. This is done because most people in Indonesia still use simple tools with unnatural work postures. Unnatural work postures such as bending, squatting, twisting, exposure to the sun, etc. Unnatural work postures cause musculoskeletal complaints and fatigue which have an impact on decreasing work efficiency. Of course, this causes a decrease in productivity and quality of life for workers. From the results of a review of several studies and literature, satisfactory results were found regarding the application of ergonomics in designing work tools according to worker anthropometric data. Application of anthropometric data for the design or redesign of a work tool based on the flow of 1) determining the body that is important in the design or redesign, 2) determining the user population, 3) calculating the percentile value for each predetermined body dimension, and 4) application to the design of the tool. Ergonomics application based on information related to human factors (strengths, weaknesses, or limitations) in designing work tools that are more effective, safe, comfortable, healthy, and efficient. An ergonomic work tool can be used effectively, comfortably, safely, healthily, efficiently, and sustainably. Ergonomics application as an alternative in overcoming the problem of musculoskeletal complaints and fatigue due to unnatural work postures. Ergonomics applications improve work safety and worker health so that work productivity increases.
APLIKASI ALAT BANTU ERGONOMIS PADA KERJA MANUAL BERDASARKAN KAJIAN ERGO-MECHANICAL UNTUK PETANI KECIL Bawa Susana, I Gede; Perdana Putra, I Ketut; Adhi, I G.A.K.C.
Energy, Materials and Product Design Vol. 3 No. 1 (2024): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Using traditional tools and manual work by small farmers in rural and developing areas is routine in processing agricultural land, especially planting plant seeds. This working model includes moderate to severe workload due to additional workload, namely sunlight when planting. In addition, work is carried out with non-ergonomic work postures, namely non-natural work postures. This causes musculoskeletal complaints to workers due to the non-harmonious tools with workers. Workers' productivity will decrease and have the potential to reduce the quality of life of small farmers themselves. To help the manual work of small farmers to create effective, comfortable, safe, healthy, efficient, and sustainable jobs, an ergo-mechanical application is needed to design work tools. This application is based on studies conducted on the design of work tools from several libraries or research results. The ergo-mechanical study is an integrated system that applies ergonomic and mechanical principles. The ergo-mechanical application produces ergonomic work tools that are comfortable to use by workers, and technical standards include material, product, and service requirements. Mechanically, the application through technical drawings, mechanical planning, and work tool materials to get a strong, lightweight, and safe work tool from hazardous substances, according to technical specifications. Technical standards are related to data sheets or specifications that describe the technical characteristics of a work tool. On the specifications of the work tool design, specifications can be added that the work tools are ergonomic. Ergonomic work tools can produce effective, comfortable, safe, healthy, and efficient work. This results from the compatibility between work tools and workers or the harmonious work tools with workers. Ergo-mechanical creates comfort in work that affects the increase in productivity and quality of life for workers.
EVALUASI ALAT PENGADUK DODOL NANGKA SKALA RUMAH TANGGA BERDASARKAN PRINSIP ERGO-EKONOMI : EVALUATION OF HOUSEHOLD SCALE JACKFRUIT DODOL MIXER TOOL BASED ON ERGO-ECONOMIC PRINCIPLES Bawa Susana, I Gede; Alit, Ida Bagus
Energy, Materials and Product Design Vol. 3 No. 2 (2024): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The use of manual tools in the process of stirring jackfruit dodol tends to have an impact on high workload, fatigue, and complaints from workers. The stirring process requires a lot of energy to get perfectly cooked dodol. In addition, manual tools take a long time, and the product needs to be evenly cooked, leaving a crust on the dodol stirring pan. To overcome this, an automatic stirring tool is needed at an affordable cost. Workers' participation as users is required so that the tools used match workers' wishes. Ergo-economic applications are necessary to meet workers' desires: comfort and affordable costs. From the evaluation carried out, it was found that the automatic stirring tool only requires a little energy because a machine does the stirring. This impacts the workload, fatigue, and complaints automatically decreasing when compared to using a manual stirring tool. Economically, the use of an automatic stirring tool provides benefits for dodol entrepreneurs after the 2.4th month. This is based on the investment value of the automatic stirring machine. The ROI (Return on Investment) level is 170.216%. This stirring machine is more effective because the stirring results are more even and do not cause crust on the container. Worker performance can be improved by applying ergo-economics based on preventive measures against behaviors that can potentially cause injury in the workplace. Workers are the main asset or economic resource in the industry, and ergonomics and economics are interrelated with ergonomics, which can create better working conditions, producing a better economy.
ANALISIS POTENSI BIOMASSA SEKAM PADI DI PULAU LOMBOK, INDONESIA SEBAGAI SUMBER ENERGI TERBARUKAN: ANALYSIS OF RICE HUSK BIOMASS POTENTIAL IN LOMBOK ISLAND, INDONESIA AS A RENEWABLE ENERGY SOURCE Bawa Susana, I Gede; Putra, I Ketut Perdana; Wirya Aryadi, I Gusti Agung Ketut Chatur Adhi
Energy, Materials and Product Design Vol. 4 No. 1 (2025): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/empd.v4i1.6877

Abstract

The utilization of renewable energy is one of the strategic solutions for overcoming dependence on fossil fuels and supporting sustainable development. This study aims to analyze the potential of rice husk biomass on the island of Lombok as an environmentally friendly renewable energy source. The methods used include collecting secondary data on rice production, estimating rice husk production as agricultural waste, and projecting the potential energy to produce. The analysis was carried out through theoretical calculations of the potential energy of rice husk biomass. It did not include economic aspects, and the collection of raw materials was not considered. The study results show that the island of Lombok has a reasonably enormous potential for rice husk biomass, with an energy value that can be converted into electricity or alternative fuels. In addition, the use of rice husk as biomass can also reduce greenhouse gas emissions and provide a positive economic impact on local communities. However, optimizing this potential requires the support of appropriate technology, infrastructure, and policies. Thus, rice husk on the island of Lombok has the prospect of being one of the promising renewable energy sources within the framework of the national energy transition.
KAJIAN ENERGI TERBARUKAN DAN PENINGKATAN EKONOMI DARI PEMANFAATAN LIMBAH SEKAM PADI MELALUI CO-FIRING BIOMASSA Bawa Susana, I Gede; Wirya Aryadi, I Gusti Agung Ketut Chatur Adhi
Energy, Materials and Product Design Vol. 4 No. 2 (2025): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/n0qbf184

Abstract

Pemanfaatan limbah sekam padi sebagai sumber energi terbarukan memiliki potensi besar dalam mendukung ketahanan energi nasional sekaligus memberikan nilai tambah ekonomi bagi masyarakat. Indonesia dengan produksi padi mencapai 53,14 juta ton pada tahun 2024 memiliki potensi limbah sekam padi sebesar 10,63 juta ton. Dengan nilai kalor rata-rata 14 MJ/kg, potensi energi teoritis sekam padi mencapai 148,8×10⁹ MJ atau setara dengan 41,33 GWh per tahun. Pemanfaatan sekam padi sebagai bahan bakar campuran (co-firing) pada Pembangkit Listrik Tenaga Uap (PLTU) memberikan kontribusi signifikan terhadap peningkatan bauran energi terbarukan dan pengurangan emisi gas rumah kaca. Berdasarkan data PLN, program co-firing biomassa telah diterapkan di 46 PLTU hingga 2023 dengan penggunaan biomassa 1 juta ton dan penurunan emisi sekitar 1,05 juta ton CO₂e. Uji coba co-firing sekam padi di beberapa PLTU seperti Jeranjang, Paiton, dan Suralaya menunjukkan operasi yang stabil dengan efisiensi tinggi dan penurunan emisi SO₂ hingga 29,22%. Meskipun memiliki nilai kalor lebih rendah dibanding batubara dan kadar abu tinggi (hingga 20,67%), sekam padi tetap potensial digunakan hingga rasio 20–30% massa energi. Kandungan silika (SiO₂) yang mencapai 95,52% menimbulkan tantangan seperti slagging dan fouling, namun residu abu dapat dimanfaatkan sebagai bahan campuran semen atau silica powder. Pemanfaatan sekam padi melalui metode direct co-firing dinilai paling sesuai untuk PLTU di Indonesia karena murah dan mudah diterapkan tanpa modifikasi besar. Secara keseluruhan, co-firing sekam padi mampu mendukung transisi energi bersih, mengurangi ketergantungan pada batubara, meningkatkan ekonomi sirkular pedesaan, serta berkontribusi terhadap target Net Zero Emission 2060 di Indonesia.
Sosialisai Pengaruh Intensitas Cahaya terhadap Kenyamanan dan Kesehatan Mata pada Proses Belajar Mengajar di Ruang E Jurusan Teknik Elektro Fakultas Teknik Universitas Mataram Perdana Putra, I Ketut; Wiryajati, I Ketut; Bawa Susana, I Gede; Sri Adnyani, Ida Ayu; Joniarta, I Wayan
JURNAL KARYA PENGABDIAN Vol. 7 No. 2 (2025): Oktober, Jurnal Karya Pengabdian
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v7i2.224

Abstract

Pencahayaan yang optimal di dalam ruang kelas memiliki peran penting dalam mendukung kenyamanan visual, konsentrasi, serta efektivitas proses belajar mengajar secara keseluruhan. Kegiatan pengabdian masyarakat ini bertujuan untuk mensosialisasikan pentingnya kualitas intensitas cahaya pada ruang kelas E di Jurusan Teknik Elektro, Fakultas Teknik, Universitas Mataram. Metode yang digunakan meliputi pengukuran intensitas cahaya menggunakan lux meter digital, penyampaian materi edukatif, serta diskusi interaktif bersama dosen dan mahasiswa. Hasil pengukuran menunjukkan bahwa intensitas pencahayaan di kedua ruang kelas berada di bawah standar minimum 350 lux sebagaimana tercantum dalam SNI 6197:2011. Kondisi ini berpotensi menurunkan kenyamanan belajar dan menyebabkan kelelahan visual. Kegiatan sosialisasi ini berhasil meningkatkan kesadaran peserta akan pentingnya pencahayaan ruang kelas yang memadai, serta menghasilkan rekomendasi praktis seperti penggunaan lampu LED dan penambahan titik pencahayaan. Diharapkan hasil kegiatan ini dapat mendorong perbaikan nyata menuju terciptanya lingkungan belajar yang lebih nyaman dan produktif.
Co-Authors A. Mulyanto Achmad Zainuri Adhi W.A., I G.A.K. Chatur Adhi, I G.A.K.C. Adhi, I.G.A.K.C. Agus Dwi Catur Alit Triadi, Anak Agung Aryadi, I G.A.K. Chatur Adhi Wirya CATUR ADHI , I GUSTI AGUNG KETUT Chatur Adi.W.A, I.G.A.K Emmy dyah S I G.A.K Chatur Adhi W.A. I G.A.K. Chatur Adi W.A. I G.A.K.C. Adhi I Gede Santosa I Gusti Agung Ketut Chatur Adhi Wirya Aryadi I Ketut Perdana Putra I Ketut Wiryajati I Made Adi Sayoga I Made Mara I Made Suartika I Wayan Joniarta I. B. Alit I. B. Alit I. M. Mara I.B Alit I.B. Alit, I.B. I.D.K. Okariawan I.M Mara I.M. Mara I.M. Nuarsa Ida Ayu Sri Adnyani Ida Bagus Alit Kawirian, Wisnu M. Mirmanto, M. Made Wijana Made Wirawan Made Wirawan Made Wirawan Made Wirawan, Made Maharsa Pradityatama Mara, I.M. Mas'ud Mas'ud N. Nurpatria, N. Nuarsa, I.M. Padang, Y.A. Perdana Putra, I Ketut Putra, Gilang Ade Putra, I Ketut Perdana R. Sutanto Rudy Sutanto S. Sujita Sapri, S. Sinarep Sinarep Sugiman Sugiman Sujita Darmo Sujita Sujita Sujita Sujita Sujita, Sujita Sultan Sultan Wirya Aryadi, I Gusti Agung Ketut Chatur Adhi Yesung Allo Padang