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All Journal Jurnal Keteknikan Pertanian Tropis dan Biosistem Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Teknologi Pertanian Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal Teknologi Pertanian Andalas Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Rona Teknik Pertanian GreenTech
Ashadi Hasan
Jurusan Teknik Pertanian, Fakultas Teknologi Pertanian, Universitas Andalas, Padang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Rancang Bangun Alat Grading Buah Jeruk Nipis (Citrus Aurantifolia) Mekanis Santosa, Santosa; Hasan, Ashadi; Munthe, Ali Ibrahim
GreenTech Vol. 1 No. 2 (2024)
Publisher : Departmen Of Agro-industrial Technology, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/greentech.v1i2.26

Abstract

Telah dilakukan penelitian tentang rancang bangun alat grading buah jeruk nipis (Citrus aurantifolia) mekanis. Jeruk nipis banyak digunakan dalam industri jamu, kosmetika, minuman, makanan, cairan pembersih, selain itu jeruk nipis dipakai sebagai bahan ramuan obat tradisional karena khasiatnya sebagai penurun demam, pereda batuk, anti inflamasi, dan antiseptik. Tujuan dari penelitian ini yaitu merancang dan melakukan evaluasi teknis serta evaluasi ekonomi alat grading buah jeruk nipis. Penelitian ini diharapkan mampu menjadi solusi dari permasalahan pengkelasan (grading) buah jeruk nipis hasil panen juga dapat membantu pedagang maupun tengkulak yang ingin melakukan pengkelasan (grading) jeruk nipis. Penelitian yang dilakukan yaitu perancangan alat sekaligus pengamatan kinerja alat. Metode yang digunakan dalam penelitian ini adalah eksperimen dan studi literatur. Pengujian dan pengamatan yang dilakukan yaitu: persentase hasil grading, persentase sesuai grade dan salah grade, tingkat kerusakan hasil grading, kapasitas kerja alat grading, kebisingan alat, kecepatan putaran, dan analisis ekonomi. Pengamatan dilakukan dengan menggunakan 2 perlakuan yaitu berat buah jeruk nipis sebanyak 5 kg dan berat 10 kg dengan tiga ulangan. Berdasarkan hasil pengujian diperoleh  persentase rata-rata hasil grading pada berat 5 kg yaitu grade A 18,7 %, grade B 40,7 %, grade C 28,4 %, dan tersangkut 12,2 %. Persentase rata-rata hasil grading pada berat 10 kg yaitu grade A 12,7 %, grade B 39,1 %, grade C 38,1 %, dan tersangkut 10,1 %. Persentase rata-rata sesuai grade dan salah grade pada berat 5 kg grade A yaitu sesuai grade 82,6 %, salah grade 17,4 %, grade B yaitu sesuai grade 81,9 %, salah grade 18,1 %, grade C yaitu sesuai grade 100 %, salah grade 0 %. Persentase rata-rata sesuai grade dan salah grade pada berat 10 kg grade A yaitu sesuai grade 78,8 %, salah grade 21,2 %, grade B yaitu sesuai grade 85,7 %, salah grade 14,3 %, grade C yaitu sesuai grade 100 %, salah grade 0 %. Nilai persentase kerusakan hasil grading dengan alat dengan berat 5 kg sebesar 0 %, dan dengan berat 10 kg sebesar 1,851 %, dengan kapasitas kerja alat dengan berat 5 kg sebesar 817,2kg/jam, dengan berat 10 kg sebesar 912,6 kg/jam. Dari analisis ekonomi didapatkan biaya tetap pada alat grading jeruk nipis sebesar Rp 1.065.000,00/tahun, sedangkan biaya tidak tetap sebesar Rp 14.494,15/jam, sedangkan biaya pokok grading jeruk nipis dengan berat 5 kg sebesar Rp 18,87/kg dan berat 10 kg sebesar Rp 16,73/kg.
Enhancing Mini Greenhouse Design: A CFD Analysis of Temperature, Humidity, and Wind Flow Distribution Putri, Irriwad; Aldi, Rahmah Tasya; Hasan, Ashadi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 2 (2024): June 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i2.381-393

Abstract

Research has been carried out on simulating the distribution of temperature, humidity and wind direction in a mini greenhouse using CFD ansys with several fan speed variations. This study aims to simulate the microclimate in a mini greenhouse, namely in the form of temperature, humidity and wind direction with variations in fan speed, namely with speeds of 1.7 m/s, 2.0 m/s and 2.2 m/s. Field measurement data regarding temperature, humidity (RH) in the tunnel-type mini greenhouse that has been carried out is used as input or input to the boundary conditions in the CFD mini greenhouse simulation. The results of the mini greenhouse CFD simulation using Ansys FLUENT are shown in the form of contour images of each condition. Temperature distribution contour, the humidity distribution contour (RH) and the airflow velocity distribution contour indicated by the vector will be used as the focus of this research. The numerical simulation shows quite good results when compared with the results of measurements in the field with the maximum error value obtained, which is 4.04%. Keywords: Computational Fluid Dynamics, Humidity, Simulation, Temperature, Wind direction.
The Role of Fan Speed and Misting for Computational Fluid Dynamics (CFD) Analysis of Temperature and Humidity Regulation in Greenhouses Putri, Renny Eka; Salwa, Mutiara; Hasan, Ashadi; Putri, Irriwad
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 6 (2025): December 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i6.2026-2038

Abstract

Maintaining an optimal climate is essential for plant growth, and greenhouses though controlled often face challenges such as excessive heat. To address this, fan and misting systems are commonly used. This study investigates the role of fan speed and misting in regulating temperature and relative humidity (RH) in a smart greenhouse using Computational Fluid Dynamics (CFD) simulations. In this research, CFD simulations were performed using actual temperature and RH measurements as input data. The scenarios included varying fan speeds (3.4 m/s, 4.5 m/s) and a control condition without a fan, combined with 15-minute misting sessions. The results show that a fan speed of 4.5 m/s with misting is more effective at lowering temperature compared to 3.4 m/s under the same misting conditions. The simulation errors were below 10% across all treatments, indicating the model’s reliability. These findings offer valuable insights for optimizing climate control in greenhouses, supporting more efficient and sustainable crop production.
Co-Authors - Andasuryani Abdullah Habib Aldi, Rahmah Tasya Alhapen Ruslin Chandra Aulia Rahman Zulmi Azrifirwan, Azrifirwan Erigas Ekaputra Fadhli Anas Feri Arlius Ifmalinda Khandra Fahmy Maulana, Dwipa Islam Muhammad Iqbal Abdi Lubis Munthe, Ali Ibrahim Omil Charmyn Chatib Putri, Irriwad Rahmah Tasya Aldi Renny Eka Putri, Renny Eka Rise Prana Sari Sajeev Rattan Sharma Salwa, Mutiara Santosa - Santosa Santosa Santosa Santosa Silvia Rosa Tarsem Chand Mittal