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Arifudin, Andi
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Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Unjuk Kerja Prototype Trainer Lemari Pendingin dengan Variasi Beban Pendinginan Arifudin, Andi; Wiratmaja, I Gede; Pasek Nugraha, I Nyoman
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol 3, No 1 (2021): October
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v3i1.12225

Abstract

This study aimed to find the effect of variations in cooling load on the performance of the prototype trainer refrigerator, which in this refrigerator prototype had never been tested performance. In this study, the experimental method was used. The values sought in this study were the rate of room cooling and the Coefficient of Performance (COP). In this study, the variation of the cooling load used started from temperatures of 300, 350, 400, 450 oC, with 15 repetitions, and the temperature performance used was 1000C. The study results showed that the highest room cooling rate occurred at 300 oC cooling load variation, namely 0.00265, and the smallest room cooling rate occurred at 450 oC cooling load variation, namely 0.00174. The highest Coefficient of Performance (COP) results occurred at a cooling load variation of 450 oC, namely 34.09, and the lowest Coefficient of Performance (COP) occurred at a cooling load variation of 300 oC, namely 29.60. From these results, it can be concluded that the cooling rate of the room was inversely proportional to the increase in cooling load because the more significant the cooling load, the longer the time obtained, resulting in a small room cooling rate. And for the results of the Coefficient of Performance (COP), it was directly proportional to the increase in the cooling load because the more significant the cooling load given, the higher the temperature at T1 and T2, resulting in a significant Coefficient of Performance (COP).
RANCANG BANGUN SISTEM KONTROL MESIN PENGISI DAN PENAKAR JAMU SEMI OTOMATIS BERBASIS TIMER DAN SENSOR ULTRASONIK Arifudin, Andi; Kurniawan, Wahyu Dwi
Jurnal Rekayasa Mesin Vol 6 No 02 (2021): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v6i02.40336

Abstract

UKM Jamu Bu Luluk merupakan industri rumahan yang bergerak di sektor minuman yang terletak di kelurahan Rungkut, Surabaya. Berdasarkan survey yang kami lakukan permintaan pasar akan produk jamu mencapai 250 botol/hari. Sedangkan UKM Jamu Bu Luluk hanya mampu memproduksi 50 botol/hari. Salah satu permasalahan pada proses pengisian minuman jamu masih menggunakan cara konvensional, yaitu dengan menggunakan corong dan gelas kecil sehingga membutuhkan waktu yang lama dan sering terjadi tumpah pada proses pengisian. Untuk mengatasi permasalahan diatas maka diperlukan suatu teknologi tepat guna berupa Mesin Pengisi dan Penakar Jamu Semi Otomatis berbasis timer dan sensor ultrasonik. Dalam penelitian ini penulis bertujuan hanya membahas desain sistem kontrol, keakurasian kinerja sensor ultrasonik dan keakurasian volume pengisian. Metode analisis data deskriptif kuantitatif diterapkan dalam perancangan ini yaitu dengan mendeskripsikan data secara sistematis faktual dan akurat, selain itu pemilhan komponen yang digunakan juga telah disesuaikan dengan kebutuhan yang ada. Pada bagian hadware, Arduino UNO digunakan sebagai kontrol utama alat dan sensor ultrasonik HC-SR04 sebagai sensor pendeteksi adanya sebuah botol. Berdasarkan dari hasil pengujian sensor ultrasonik HC-SR04 dan Kekauratan volume Pengisian didapatkan untuk rata-rata akurasi keberhasilan sensor yaitu sebesar 97,3% sedangkan untuk nilai keakuratan volume pengisian sebesar 99,59%. Kesalahan pengukuran umumnya disebabkan karena pengaturan delay waktu pada program yang kurang tepat. UKM Herbal Mrs. Luluk is a home industry engaged in the beverage sector, located in the Rungkut village, Surabaya. Based on the survey we conducted, the market demand for herbal products reached 250 bottles/day. Meanwhile, UKM Jamu Mrs. Luluk is only able to produce 50 bottles/day. One of the problems in the process of filling herbal drinks is still using the conventional method, namely by using a funnel and small glasses so that it takes a long time and often spills during the filling process. To overcome the above problems, an appropriate technology is needed in the form of a semi-automatic herbal filling and measuring machine based on a timer and ultrasonic sensor. In this study the authors aim to only discuss the design of the control system, the accuracy of the ultrasonic sensor performance and the accuracy of the filling volume. The quantitative descriptive data analysis method is applied in this design, namely by describing the data in a factual and accurate systematic manner, besides that the selection of components used has also been adapted to existing needs. In the hardware section, Arduino UNO is used as the main control tool and the HC-SR04 ultrasonic sensor as a sensor for detecting the presence of a bottle. Based on the test results of the ultrasonic sensor HC-SR04 and the accuracy of the filling volume, the average accuracy of the sensor success is 97.3% while the accuracy of the filling volume is 99.59%. Measurement errors are generally caused by improper time delay settings in the program.
Co-Authors I Gede Wiratmaja I Nyoman Pasek Nugraha Wahyu Dwi Kurniawan