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Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin
Published by Universitas Halu Oleo
ISSN : -     EISSN : 25028944     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Jurnal ENTHALPY memuat artikel hasil penelitian tugas akhir mahasiswa di lingkup Jurusan Teknik Mesin, Fakultas Teknik Universitas Halu Oleo Entalpy Jurnal Ilmiah Mahasiswa Teknik Mesin diterbitkan 4 (empat) kali setahun pada bulan Februari, Mei, Agustus dan November.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 191 Documents
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Optimalisasi Mesin Penggiling Arang Sekam Sebagai Media Tanam Dalam Pertanian Wardana, Muh. Azim Panca; Gunawan, Yuspian; Sudia, Budiman
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 8, No 4 (2023): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v8i4.45282

Abstract

Dalam perkembangan teknologi dan industri banyak sekali alat-alat yang dibuat untuk mempermudah dalam melakukan pekerjaan. pada bidang pertanian banyak sekali alat-alat yang diperlukan dalam mempermudah pengembangan pada bidang pertanian. Salah satu alat yang dibutuhkan yaitu mesin untuk menggiling arang sekam padi.. Penelitian ini bertujuan untuk menentukan material yang efektif yang di gunakan untuk mesin, menentukan dimensi yang efektif dalam membuat poros dan transmsi dan mampu menghasilkan desain yang dapat mengoptimalkan kebisingan pada mesin. Hasil menunjukkan bahwa sistem utama adalah motor listrik dengan diameter puli atas 8cm diameter puli bawah 7 cm, diameter poros 2.5 cm Jarak poros motor sampai dengan poros penggiling 50 cm diameter gigi penggiling statis 20 cm diameter gigi penggiling dinamis 22 cm, lebar V belt 1,2 cm dengan bahan utama yang di gunakan pada poros yaitu cast stainless steel 7,92 (Kg/mm2), pada kedua puli menggunakan bahan yang sama yakni alumunium paduan Fe 46 (Kg/mm2) dan sabuk menggunakan V belt degan material utama rubber.
Analisis Perancangan Alat Pencacah Nilam Untuk Petani Nilam Prananda, Fijay; Balaka, Ridway; Endriatno, Nanang
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 9, No 1 (2024): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v9i1.46935

Abstract

The automatic pull shaft on the patchouli chopper is an important component of the patchouli chopper machine. The research aims to carry out an analysis of the patchouli chopper pull shaft and produce a design for the newest patchouli chopper. In this research, the focus was only on the analysis of the pulling shaft on the patchouli chopper where all research methodologies were carried out using inventor software. The main driving engine is a combustion engine with a power of 5.5 HP, S45C shaft material with a tensile strength of 58 kg/mm2, and a shaft diameter of 15 mm. In the selection of pulleys, plays with diameters of 50 mm and 300 mm are used, V - Belt speed is 0.18 m/s, circumference length is 1499 mm, using V - Belt type B with axle distance of 474.6 mm, the contact angle is 2.3 rad and the length of the chopped patchouli was 3.8 cm. From the calculations and analysis, the addition of a pulling shaft to the patchouli chopper is safe to use. Keywords: Patchouli chopping tool, Puller shaft, Patchouli
ANALISIS EXHAUST MANIFOLD PADA MESIN SI DALAM MENGURANGI EMISI MENGGUNAKAN METODE CFD Septian, Chandra Ahmad
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 8, No 4 (2023): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v8i4.41615

Abstract

Pencemaran lingkungan akibat peningkatan dari eksponensial penggunaan bahan bakar fosil sebagai sumber energi telah menjadi ancaman serius bagi umat manusia. Manifold buang mengumpulkan gas buang yang terbentuk selama pembakaran dan melepaskannya ke lingkungan. Manifold buang adalah bagian penting dari mesin. Gas buang dari beberapa silinder mesin dikumpulkan di manifold buang dan dialirkan ke dalam satu pipa knalpot silinder ke atmosfer. Manifold buang terbuat dari baja tahan karat atau besi tuang. Metode yang digunakan dalam penelitian ini adalah metode computational fluid dynamics dengan menggunakan software ansys fluent. objek yang dijadikan penelitian ini adalah exhaust manifold. Pembuatan geometri dan pembuatan mesh adalah langkah awal dalam penelitian. kemudian memasukkan data dan parameter-parameter sebagai batas kondisi dalam simulasi. Variabel yang dipakai dalam penelitian ini adalah bahan bakar yang berbeda diantaranya bensin, metana, dan metanol. Tujuan dari penelitian ini adalah dapat mengetahui alternatif bahan bakar selain bensin yang dapat digunakan dalam mengurangi emisi pada exhaust manifold. Kemudian tekanan balik yang dihasilkan dapat mempengaruhi performa sehingga mencari tekanan balik terkecil. Kecepatan yang lebih tinggi dapat mempercepat aliran udara yang keluar. Bahan bakar berpengaruh signifikan terhadap kinerja manifold. Hasilnya adalah metana yang terbaik dalam segi performa dan direkomendasikan dalam mengurangi emisi. Kata kunci: CFD, exhaust manifold, kecepatan gas buang, mesin SI, tekanan balik
Ultrasonic Proximity Sensor Device to Enhance the Efficiency of Livestock Transport Process Arbiyani, Filian
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 9, No 1 (2024): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v9i1.47311

Abstract

Parking a vehicle is a difficult task for some people and can take a lot of time. This problem is also experienced by the livestock drivers at Farm as the transported animals and feed obstruct their backsight. Moreover, the parking space is limited. Therefore, this research aims to build the Ultrasonic Proximity Sensor device to assist drivers to be more efficient in parking their vehicles and avoid accidents. The research is first carried out by identifying the problems which then continued with the design process and manufacturing the Ultrasonic Proximity Sensor device. After the manufacturing process, the Ultrasonic Proximity Sensor device is tested to ensure that it can display the remaining distance on the LCD and provide warnings through LEDs and buzzers. The results of this research have assisted the drivers, specifically when they are maneuvering backwards, and enhances the efficiency of livestock transport process at Farm.
Sistem Konversi Energi Panas Briket Arang Menjadi Energi Listrik Sebagai Alat Charger Baterai Menggunakan Termoelektrik Andi, La Ode; Balaka, Ridway; Mangalla, Lukas Kano
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 8, No 4 (2023): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v8i4.45194

Abstract

Regarding the conversion system with a thermoelectric element which allows it to be used anytime and anywhere, that's why you need to position the tool correctly. With that, the research aims to find out the voltage produced and the performance of thermoelectrics as a generator of electrical energy. The method used in this research is a system for converting briquette heat energy into electrical energy. The variations in the research experiment are fan cooling 1, fan cooling 2 and water cooling. By using a charcoal briquette heater and three variations of cooling, the average voltage of cooling fan 1 0.660 V, cooling fan 2 0.769 V, water cooling 0.903 V can be produced and the average current of cooling fan 1 is 0.029 A, cooling fan 2 is 0.034 A, cooling Water 0.039 A. The characteristics of the resulting temperature difference show a significant increase along with the length of combustion time. The resulting voltage is higher if the hot combustion of the briquettes is carried out with a variation of water cooling. Keywords: Briquettes, electricity, hot side, thermoelectric, and voltage
Uji Kinerja Oven Pengering Spesimen Cat Tipe Tertutup Dengan Penambahan Isolator Aluminium Foil Hadiputranto, Rachmanto; Andriansah, Acep Hendra; Rizki, Aldi Mochamad
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 9, No 1 (2024): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v9i1.46897

Abstract

This research is a development study on the design of a laboratory scale paint specimen drying oven with a 100 Watt incandescent lamp heat source. This research focuses on the impact of adding aluminum foil insulators on the overall interior of the oven. The aim of the research is to determine the performance of the oven with the main indicators including the maximum temperature that can be achieved, the time required to reach the maximum temperature and the thermal efficiency of the oven. The research method used is testing by applying the principles of the First Law of Thermodynamics regarding Conservation of Energy. Tests were carried out in 11 varying temperature conditions, starting from room temperature of 300 Kelvin. From the test, input data is obtained in the form of electric current, voltage and electric power. Input data includes temperature, heating time and power required to heat the oven chamber. Two input and output data are used to calculate the thermal efficiency of the oven. The final test results were compared with the performance of the oven without an isolator and there was a change in performance. The final results of the research showed that the addition of the aluminum foil insulator was able to increase the maximum temperature of the oven to 330.13 K from 327.57 K before without the insulator. The heating time with the aluminum foil insulator was faster to 2785.6 seconds compared to 3150.56 seconds before without the insulator. . The average thermal efficiency with an aluminum foil insulator is 90.93% from 94.50% without an insulator. Key words:, Aluminum Foil, Insulator, Closed Oven
Analisa Mampu Redam Komposit Polyester Berpenguat Limbah Filter Rokok Prayudhi, Muhammad Mirdhad; Samhuddin, Samhuddin; Aksar, Prinob
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 8, No 4 (2023): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v8i4.45154

Abstract

Wastes that we often encounter easily is waste from cigarette filters, one example of its utilization is the utilization of wast .filter. filter cigarettes as a composite mixture, by utilizing materials originating from waste which are easy to obtain by utilizing cigarette filter waste as a sound absorbing material. this study aims to determine the composition of the composite mixture reinforced by cigarette filter waste on sound intensity and sound absorption coefficient. The production method is with a fraction of 30%: 70%, 44%: 56%, and 51%: 51%, which is the best composite fraction with respect to sound intensity values and sound absorption coefficient values, composite materials with a frequency of 510 Hz get sound intensity values the highest is the 30%:70% fraction of 104,867 dBa. and the lowest is the 51%:49% fraction, which is 96.676 dBa, and the highest sound absorption coefficient is the 51%:49% fraction of 0.196 and the lowest is the 30%-70% fraction, namely 0.129, so it can be concluded that the smaller the fiber fraction of the acoustic material of cigarette filter waste, the higher the sound absorption coefficient produced. The best sound absorption coefficient value is obtained for the material acoustic with a fraction of 51% :51% frequency of 510 Hz which is 0.196. Keywords: Acoustic, Boko, Composite, Noise, Waste.
Analisa Kapasitas dan Kebutuhan Daya Pada Sistem Distribusi Feeder Benu-Benua Buransa, Armin Sole; Mangalla, Lukas Kano; Hasanudin, La
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 9, No 1 (2024): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v9i1.46713

Abstract

The distribution system is part of the electric power system. This distribution system is useful for distributing electricity from large power sources (bulk power sources) to consumers. However, in this distribution there are often obstacles such as disturbances in the distribution network system. In general, the good and bad of the electricity distribution and distribution system is mainly in terms of the quality of the power received by consumers. This research was conducted to determine the capacity and demand for electricity used against the load in the city of Kendari and to determine the care and maintenance of the distribution system in the city of Kendari. In collecting data, a field survey was carried out at the research location, namely at the New Kendari 150 KV Substation. At the largest average load occurs in the old city line with a power of 38.734,25. While the peak load and demand factor on each line has a different amount. And the biggest voltage loss occurs in the alolama line of 9,9% and the lowest in the old city line of 3,8%. It can be concluded that on the Kemaraya Line the average load obtained is 38.839,25 with the highest load occurring at 18.00 at 6,068 while the highest demand factor occurs on the Kemaraya Line at 19.00 at 134,5. Kata kunci: Load Factor, Capacity, Power Requirements
Perancangan Struktur Penyangga Lampu Sorot Kapasitas 2.000 Watt Mufli, Mufli; Sisworo, Raden Rinova; Aksar, Prinob
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 9, No 2 (2024): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v9i2.48246

Abstract

Spotlights are a lighting tool in supporting an activity at night or activities in a room. The problem that occurs in the community in the lighting system is that there are still many places that have not been reached by electricity. The purpose of this study was to determine the design or design of a strong support frame structure for a 2,000 watt generator-powered floodlight. This research focuses on the design or design of tools which include selecting the sizes of the main parts and selecting materials that are in accordance with the conditions of use and calculating the strength of the tool. In this research, the dimensions of length (165cm), width (72cm), height (300cm) consisting of spotlights with a power of 400 watts as many as 4 pieces, lampposts made of UNP 75x40 iron, as well as generators as a source of electrical energy and wheels to move spotlights. in this design it is known that the critical load on the top is 152.61 kg, the critical load on the bottom is 85.44 kg, and the welding shear stress in this design is 40037. 33 N/m2. 33 N/m2. Keywords: generator, floodlight, lighting, support, design
Pengaruh Komposisi Campuran Limbah Filter Rokok dan Serbuk Kayu Terhadap Kemampuan Redam Material Komposit Mulawarman, Mulawarman; Udayana, I Nyoman; Samhuddin, Samhuddin; Aksar, Prinob; Aminur, Aminur
Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Vol 9, No 3 (2024): Enthalpy: Jurnal Ilmiah Mahasiswa Teknik Mesin
Publisher : Teknik Mesin Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/enthalpy.v9i3.49022

Abstract

Waste is a residual production material that contains substances capable of causing pollution and health disturbances. One of the waste types frequently encountered is cigarette filter waste and wood powder waste, both of which are managed minimally. This research aims to determine the influence of the composition of a mixture of cigarette filter waste and wood powder waste on sound absorption in composite materials. The method involved preparing the necessary tools and materials, then creating composites with fractions (65%, 20%: 10%, 15%), (60%, 20%: 13%, 7%), and (55%, 20%: 15%, 10%). Subsequently, sound absorption testing was conducted using the direct method following ISO 11654 standards. Results from the sound absorption testing at a frequency of 500 Hz showed the highest sound intensity value in the fraction (65%, 20%: 10%, 15%) at 104,833 dBa and the lowest in the fraction (55%, 20%: 15%, 10%) at 93,333 dBa. The highest sound absorption coefficient value was found in the fraction (55%, 20%: 15%, 10%) at 0,202, while the lowest was in the fraction (65%, 20%: 10%, 15%) at 0,104. As the volume of acoustic material from cigarette filter waste and wood powder waste increased, the sound absorption coefficient also increased. The best sound absorption coefficient value was observed in the fraction (55%, 20%: 15%, 10%) at 0,202

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