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Mujasam Mujasam
Universitas Papua
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Journal : Jurnal Natural

 1 
PERANCANGAN ALAT UKUR KETINGGIAN PERMUKAN AIR BERBASIS SENSOR ULTRASONIK MAXSONAR MB7389 DAN MIKROKONTROLER ATMega328P Elohansen Padang; Baina Afkril; Richard Lewerissa; Jacson Viktor Morin; Mujasam Mujasam
Jurnal Natural Vol. 18 No. 1 (2022): Jurnal Natural
Publisher : FMIPA Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jn.v18i1.164

Abstract

In this study, a low-cost water level measurement device based on an ultrasonic sensor was developed. The ultrasonic sensor used is Maxsonar MB7389, and the data acquisition system uses the ATMega328P Microcontroller. Meanwhile, water level measurement data is displayed in real-time on a computer and also stored in a microSD card where data can be retrieved at any time for analysis. The choice of the Maxsonar MB7389 sensor for sensing water levels is based on its superiority in water resistance so that it can be applied in the field, and the measurement resolution is up to millimeters. Meanwhile, the ATMega328P microcontroller contained in the Arduino Uno board has advantages in terms of its relatively low-cost price, ease to program using the open-source Arduino IDE software, supported by many libraries, and modules. Based on the results of laboratory-scale testing, the measurement device developed can measure the water level quite accurately. That can be seen from the average water level measurement error for sensors without a casing of 0.31 cm and sensors with a PVC pipe sheath of 0.25 cm. Then, the value of the Pearson correlation coefficient (R2) is 0.99 for sensors without pipe casings, and 1 for sensors with PVC pipe casings. Then, based on the ripple comparison of the results of the water level measurement, it can be suggested for the measurement of the highly fluctuating water level (such as sea and river) should use a pipe casing. Meanwhile, for measuring the water level in the tank that is not too volatile, you can use a sensor without a pipe casing.
EFISIENSI TERMAL DESAIN SISTEM PEMANAS AIR ENERGI MATAHARI DENGAN VARIASI JUMLAH PIPA BESI Rosalina Rosina Mirino; Kharl Hainz Yarama Rumbiak; Mujasam Mujasam
Jurnal Natural Vol. 18 No. 2 (2022): Jurnal Natural
Publisher : FMIPA Universitas Papua

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30862/jn.v18i2.199

Abstract

This study aims to determine the average value of hot water temperature and thermal efficiency that can be produced by using iron pipes as fluid collectors in the Solar Energy Water Heater design system. Collector pipes are made in three variations of 5, 7 and 9 pipes which are placed in a wooden box with transparent glass as a cover on the collector surface. The inside of the wooden box is lined with styrofoam and aluminum foil to reduce heat loss to the environment. Data were collected by observing and measuring the temperature of hot water with three variations of the number of pipes, each variation of the number of pipes carried out for three days. This water temperature measurement was carried out for 6 hours, from 10.20-16.30 WIT. The average maximum temperature produced for a total of 5 collector pipes is 59.70C, a total of 7 pipes is 63.70C, and a total of 9 collector pipes is 61.70C. The thermal efficiency value of the solar energy water heating system design for the number of 5 collector pipes is 96% , the number of 7 collector pipes is 97%, and the 9 collector pipes is 99%.
Co-Authors Abd. Rasyid Syamsuri Alberto Y. T. Allo Alberto Yonathan Tangke Allo Allo, Alberto Tangke Asiroha Siboro, Asiroha Baina Afkril br Perangin-angin, Jenia Loken Budi Santoso Damopolii, Insar Dwi Budi Santoso Elohansen Padang Febiyanti C.V Sambite Febry Royantoro Halimatussa’diyah Halimatussa’diyah Handayani, Triastuti Hendra Yudi Purnomo, Hendra Yudi Heri Sugito Iba, Feriyanto Indah Anggun Galura, Indah Anggun Irfan Yusuf Iriwi L.S. Sinon, Iriwi L.S. Jacson Viktor Morin Jan Hendriek Nunaki Jefri Palimbong Kaleb A. Yenusi Kharl Hainz Yarama Rumbiak Mohammad Amin Nasir, Nur Indah Ririn Fitriani Nur Indah Ririn Fitriani Nasir Nurliawaty, Lilis Nurliawaty, Lilis Nuryanti Rumalolas Prayetno, Eko Rafy Iklashi Richard Lewerissa Rintar A. Simatupang Rizkyamana Nur Chasanah Rosalina Rosina Mirino Selvi Marcellia Simatupang, Rintar A. Simatupang, Rintar Agus Sri Rosepda Br Sebayang Sri Rosepda Br. Sebayang Sri Rosepda Sebayang, Sri Rosepda Sri Wahyu Widyaningsih Suliyati, Suliyati Taufik Setiaji Tiadsen Loupatty Viatri Areskiana Aziz Wahyu Widyaningsih Y.T. Allo, Alberto Yenusi, Kaleb Amaghi