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Perdana Putra, I Ketut
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Kinerja Pendinginan Suhu Konstan 150C dengan Variasi Dimensi Kondenser pada Truk Refrigerator : Cooling Performance 15C Constant Temperature with Variations Condenser Dimensions in Refrigerator Trucks Bawa Susana, I Gede; Perdana Putra, I Ketut
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 12 No. 1 (2024)
Publisher : UNIVERSITAS PENDIDIKAN GANESHA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v12i1.72998

Abstract

Temperatur pendinginan konstan sangat dibutuhkan dalam penyimpanan bahan pangan agar awet dan tetap segar dalam suatu alat transportasi yaitu berupa truck refrigerator. Untuk mempertahankan temperature konstan 15oC, dilakukan pengujian terhadap aplikasi dimensi kondensor terhadap knerja mesin pendingin. Dimensi kondensor yang digunakan meliputi (P 23 x T 14) inch2 x 19 mm, (P 23 x T 14) inch2 x 26 mm, dan (P 23 x T 14) inch2 x 44 mm disesuaikan dengan kondisi operasi dari truck refrigerator. Dari pengujian yang dilakukan ditemukan bahwa dimensi kondensor paling besar memberikan waktu capai dingin paling cepat yaitu 460 detik dibandingkan dimensi paling kecil hanya menghasilkan 860 detik. Berdasarkan kinerja mesin pendingin yang dilihat dari indikator efek refrigerasi, kerja kompresi, dan coefficient of performance (COP) bahwa dimensi kondensor paling besar memberikan kinerja lebih baik. Kondensor dengan dimensi paling besar memiliki luas permukaan perpindahan panas paling besar, sehingga proses perpindahan panas yang terjadi lebih besar. Efek refrigerasi dan COP terjadi paling tinggi pada dimensi kondensor paling besar dengan kerja kompresi paling kecil. Suatu sistem refrigerasi yang efisien memiliki daya kompresi yang rendah dan COP yang tinggi. Kata kunci: pendinginan; truck refrigerator; dimensi kondensor; coefficient of performance Constant cooling temperatures are needed in storing food so that it lasts and remains fresh in a means of transportation, namely a truck refrigerator. To maintain a constant temperature of 15oC, tests were carried out on the application of condenser dimensions to the performance of the cooling machine. The condenser dimensions used include (L 23 x H 14) inch2 x 19 mm, (W 23 x H 14) inch2 x 26 mm, and (W 23 x H 14) inch2 x 44 mm, adjusted to the operating conditions of the truck refrigerator. From the tests carried out, it was found that the largest condenser dimension provided the fastest cooling time, namely 460 seconds, compared to the smallest dimension, which only produced 860 seconds. Based on the performance of the cooling machine, as seen from the indicators of refrigeration effect, compression work, and coefficient of performance (COP), the largest condenser dimensions provide better performance. The condenser with the largest dimensions has the largest heat transfer surface area, so the heat transfer process that occurs is greater. The refrigeration effect and COP occur highest at the largest condenser dimensions with the smallest compression work. An efficient refrigeration system has low compression power and high COP. Keywords : cooling; truck refrigerator; condenser dimension; coefficient of performance   
A Analisis Potensi Limbah Kotoran Sapi Sebagai Sumber Energi Listrik Terbarukan PERDANA PUTRA, I KETUT; SENIARI, NI MADE
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 18 No. 3 (2024)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v18n3.2738

Abstract

Pemanfaatan biogas sebagai sumber energi terbarukan telah menjadi fokus utama dalam mengurangi ketergantungan pada bahan bakar fosil dan menurunkan emisi gas rumah kaca. Artikel ini membahas proses konversi kalor yang terkandung dalam biogas menjadi energi listrik. Melalui proses anaerobik digestion, kotoran sapi diubah menjadi biogas yang kemudian dimurnikan dan digunakan dalam generator untuk menghasilkan listrik. Penelitian ini mengeksplorasi potensi konversi kotoran sapi menjadi energi listrik melalui proses pencernaan anaerobik dan konversi biogas. Dengan data dari 45 ekor sapi bali yang masing-masing menghasilkan antara 25 hingga 35 kg kotoran per hari, penelitian ini menghitung jumlah biogas yang dihasilkan dan efisiensi konversinya menjadi energi listrik. Hasil analisis menunjukkan bahwa dari 1.000 kg kotoran sapi, dapat dihasilkan sekitar 40 m³ biogas per hari dengan nilai kalor sekitar 6 kWh per m³. Dengan efisiensi konversi sistem biogas genset sekitar 35%, energi listrik yang dapat dihasilkan berkisar antara 94,5 kWh hingga 132,3 kWh per hari. Penelitian ini juga menyoroti berbagai manfaat konversi biogas kotoran sapi, termasuk pengurangan ketergantungan pada sumber energi fosil, pengelolaan limbah yang lebih baik, dan kontribusi terhadap pengurangan emisi gas rumah kaca. Penelitian ini menegaskan bahwa kotoran sapi tidak hanya berfungsi sebagai limbah tetapi juga sebagai sumber energi yang berkelanjutan, dengan potensi untuk meningkatkan keberlanjutan energi dan manajemen lingkungan.
Desain Kandang Sapi Tepat Guna Berdasarkan Metode Ergonomi Participatory Bawa Susana, I Gede; Perdana Putra, I Ketut; Joniarta, I Wayan; Chatur Adi.W.A, I.G.A.K; Alit, Ida Bagus
JURNAL KARYA PENGABDIAN Vol. 6 No. 2 (2024): ,Oktober
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v6i2.191

Abstract

Metode ergonomi participatory sebagai sarana untuk menserasikan alat kerja atau stasiun kerja dengan pekerja dalam hal ini peternak sapi. Kandang sapi didesain berdasarkan masukan atau partisipasi dari pengguna atau peternak. Hal ini bertujuan agar aplikasi di lapangan tidak menimbulkan masalah baru bagi peternak maupun pekerja. Material kandang mudah diperoleh dan tersedia di sekitar tempat tinggal peternak agar harga lebih terjangkau. Hal-hal yang dibutuhkan dalam pembuatan kandang sapi meliputi kondisi lingkungan yaitu suhu yang berhubungan dengan daerah dataran tinggi atau rendah. Selain itu, kandang sapi selalu dalam keadaan bersih dengan adanya selokan dan penampungan kotoran, serta adanya jalur pendistribusian pakan. Dimensi ideal untuk kandang sapi lokal adalah 2,1 m x 1,45 m dan kandang sapi impor adalah 2,1 m x 1,5 m. Dinding kandang dibuat dengan tinggi sekitar 0,5-1 m dari permukaan lantai dan dilengkapi dengan pagar atau sekat yang lebih tinggi dari bahu sapi saat berdiri. Arah kandang berdasarkan kepala sapi berpengaruh terhadap pertumbuhan bobot badan sapi. Untuk kandang tunggal bagian kepala sapi menghadap ke timur dan kandang ganda membujur utara-selatan.
Penyuluhan Potensi Kotoran Ayam Petelur Menjadi Biogas untuk Konsumsi Keluarga Kecil di Desa Suranadi Kabupaten Lombok Barat PERDANA PUTRA, I KETUT; SUSANA, I GEDE BAWA; JONIARTA, I WAYAN; CATUR ADHI , I GUSTI AGUNG KETUT; SRI ADNYANI, IDA AYU
JURNAL KARYA PENGABDIAN Vol. 6 No. 2 (2024): ,Oktober
Publisher : Jurusan Teknik Mesin FT Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jkp.v6i2.195

Abstract

Kotoran ayam merupakan salah satu limbah peternakan yang memiliki potensi besar sebagai sumber energi terbarukan melalui produksi biogas. Penggunaan teknologi biogas dari kotoran ayam tidak hanya dapat mengurangi ketergantungan pada sumber energi fosil, tetapi juga mengatasi masalah limbah peternakan. Penyuluhan ini dilakukan untuk memberi pemahaman kepada peternak tentang potensi limbah kotoran ayam petelur untuk dijadikan biogas. Kotoran ayam sebanyak 1 kg dapat menghasilkan 0,03m3 biogas. Pada lokasi mitra peternak memelihara 1000 ekor ayam petelur. Setiap satu ekor ayam rata-rata menghasilkan 0,1kg kotoran dalam sehari. Hal ini berarti dalam sehari dapat dihasilkan 100kg kotoran ayam dalam sehari. Dari jumlah kotoran ayam itu dapat dihasilkan 3 kg biogas perhari. Jumlah ini sangat mencukupi untuk keluarga sederhana di pedesaan. Secara keseluruhan, potensi kotoran ayam sebagai sumber energi biogas adalah sebuah peluang yang menjanjikan untuk meningkatkan kemandirian energi di pedesaan, mengurangi dampak lingkungan dari sektor peternakan, dan mendorong pertumbuhan ekonomi yang berkelanjutan. Implementasi yang tepat dan dukungan yang memadai dapat menjadikan teknologi ini sebagai bagian integral dari strategi energi terbarukan di masa depan. Dari hasil tanya jawab setelah dilakukan penyuluhan peternak ayam petelur sangat antusias terhadap adanya teknologi pemanfaatan kotoran ayam sebagai sumber biogas. Namun demikian pembuatan infrastruktur biogas memerlukan investasi yang cukup besar. Kata Kunci: kotoran ayam, biogas, energi terbarukan.
DESIGN OF DRYER FOR SMALL FARMERS BASED ON THE STUDY OF ERGONOMICS THERMAL ENGINEERING APPLICATION Bawa Susana, I Gede; Perdana Putra, I Ketut
Jurnal Pendidikan Teknik Mesin Vol. 25 No. 1 (2025): June 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jptm.v25i1.21325

Abstract

Ergonomics thermal engineering combines the principles of thermal engineering and ergonomics to design systems and products that optimize energy and resources, improve worker thermal comfort, and reduce thermal stress and fatigue. Small farmers still dry post-harvest food under direct sunlight in open areas. This process produces less than optimal drying thermal temperatures, which impacts long drying times, and dried food is susceptible to dust and animal faeces exposure. In addition, exposure to sunlight on workers causes additional workloads that affect fatigue. This can be overcome by utilizing solar collectors through dryer design based on anthropometric data of workers as users. The dryer was designed through an ergonomics thermal engineering study. Based on anthropometric data and percentile calculations, dimensions were obtained for the dryer design, such as the bottom shelf with a height from the floor of 66.88 cm based on the knuckle, the top shelf height of 123.8 cm from the floor based on standing eye height, and the height of the drying room air chimney from the floor is 177.59 cm based on the height of the upper reach. To avoid new problems with the dryer application, a table was designed as a workaid with a height of 84.31 cm based on the height of the standing elbow. Applying the principles of ergonomics thermal engineering can create systems and products that are more comfortable, safe, and efficient for workers.    
PELATIHAN PRODUKSI UNTUK MENGOPTIMALKAN USAHA KECIL KERIPIK PANGSIT DI DESA LENDANG NANGKA Bawa Susana, I Gede; Wiryajati, I Ketut; Adhi W.A., I G.A.K. Chatur; Perdana Putra, I Ketut; Alit, Ida Bagus
Jurnal Pepadu Vol 6 No 1 (2025): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v6i1.6294

Abstract

Economic development in the dumpling chips business requires cooperation from the community and related agencies. One of the efforts made by the community service team is training in pangsit chip production. This is necessary because small businesses in Lendang Nangka Village face various challenges in developing their businesses. Production is still carried out traditionally, which has an impact on the lack of uniformity in product quality. One of the main challenges is the limited knowledge and skills needed to produce quality and consistent products. The purpose of Community Service is to strengthen small entrepreneurs in Lendang Nangka Village by improving production skills so that they can make good quality and consistent products. The activity method through training carried out by the Community Service Team and the Cooperatives and SMEs Service, covers aspects of improving technical skills in the production process. Through the production process, training is provided on how to enhance the quality of the product through the use of better techniques and raw materials. The results of community service give an understanding and skills related to pangsit chips raw materials and how to print, fry, dry, and package products. This can be used as a guideline to ensure that the pangsit chips produced are of good quality and can be stored properly. By overcoming existing challenges and utilizing existing opportunities, this program is expected to have a positive impact on regional economic development. Some things related to packaging are new knowledge for pangsit chip artisans. Pangsit chips artisans are interested in using packaging other than plastic to maintain product quality and use packaging for various sizes of their products.
Analisis Penilaian dan Evaluasi Risiko Keselamatan dan Kesehatan Kerja  dengan Metode FMEA pada Pemeliharaan Jaringan Transmisi Listrik di ULTG Lombok Barat Kusmiati, Sri; Ayu Sri Adnyani, Ida; Perdana Putra, I Ketut
Jurnal Tekno Vol. 22 No. 1 (2025): JURNAL TEKNO
Publisher : Direktorat Riset dan Pengabdian pada Masyarakat Universitas Bina Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33557/1gmgzc45

Abstract

The West Lombok Transmission and Substation Services Unit (ULTG) has an important role in maintaining the electricity transmission network. However, this work has high risks, such as falling from heights, exposure to electromagnetic fields, and extreme environmental conditions. Therefore, this study aims to analyze risks and evaluate work safety control efforts using the Failure Mode and Effect Analysis (FMEA) method. This research uses a qualitative approach through interviews and questionnaires and quantitative with the calculation of Risk Priority Number (RPN). The results of the analysis show that the level of risk at ULTG West Lombok varies from very low (RPN 6.4) to low (RPN 25). The risks include work tool failure and potential worker accidents. To reduce the risks, measures such as the use of Personal Protective Equipment (PPE), implementation of safe work procedures, and regular inspection of tools and tower structures are carried out. Using the FMEA method, this research helps improve work safety and build a culture of Occupational Safety and Health (K3) at ULTG West Lombok.
PELATIHAN PRODUKSI UNTUK MENGOPTIMALKAN USAHA KECIL KERIPIK PANGSIT DI DESA LENDANG NANGKA Bawa Susana, I Gede; Wiryajati, I Ketut; Adhi W.A., I G.A.K. Chatur; Perdana Putra, I Ketut; Alit, Ida Bagus
Jurnal Pepadu Vol 6 No 1 (2025): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v6i1.6294

Abstract

Economic development in the dumpling chips business requires cooperation from the community and related agencies. One of the efforts made by the community service team is training in pangsit chip production. This is necessary because small businesses in Lendang Nangka Village face various challenges in developing their businesses. Production is still carried out traditionally, which has an impact on the lack of uniformity in product quality. One of the main challenges is the limited knowledge and skills needed to produce quality and consistent products. The purpose of Community Service is to strengthen small entrepreneurs in Lendang Nangka Village by improving production skills so that they can make good quality and consistent products. The activity method through training carried out by the Community Service Team and the Cooperatives and SMEs Service, covers aspects of improving technical skills in the production process. Through the production process, training is provided on how to enhance the quality of the product through the use of better techniques and raw materials. The results of community service give an understanding and skills related to pangsit chips raw materials and how to print, fry, dry, and package products. This can be used as a guideline to ensure that the pangsit chips produced are of good quality and can be stored properly. By overcoming existing challenges and utilizing existing opportunities, this program is expected to have a positive impact on regional economic development. Some things related to packaging are new knowledge for pangsit chip artisans. Pangsit chips artisans are interested in using packaging other than plastic to maintain product quality and use packaging for various sizes of their products.
A Analisis Potensi Limbah Kotoran Sapi Sebagai Sumber Energi Listrik Terbarukan PERDANA PUTRA, I KETUT; SENIARI, NI MADE
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 18 No. 3 (2024)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v18n3.2738

Abstract

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.
Co-Authors Adhi W.A., I G.A.K. Chatur Adhi, I G.A.K.C. Ayu Sri Adnyani, Ida CATUR ADHI , I GUSTI AGUNG KETUT Chatur Adi.W.A, I.G.A.K I Gede Bawa Susana I Ketut Wiryajati I Wayan Joniarta Ida Ayu Sri Adnyani Ida Bagus Alit Kusmiati, Sri Seniari, Ni Made Wirya Aryadi, I Gusti Agung Ketut Chatur Adhi