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Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Published by Institut Teknologi Nasional Yogyakarta
ISSN : 19075995     EISSN : -     DOI : -
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Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 905 Documents
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Rancang Bangun Alat Ukur Gaya Pada Wind Tunnel Menggunakan Sensor Load Cell Denny Dermawan
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

In the Aerodynamics laboratory at the Adisutjipto College of Technology, the wind tunnel mass measuring instrument only uses an ordinary digital scale. So to facilitate reading in the wind tunnel, a tools is built using a load cell sensor and with digital readings that have been converted from mass to force. This data reading system is connected to an LCD as a display in monitoring the resulting speed changes. By using the data collection method, and also after performing tool calibration and testing with ordinary digital scales, results were found by using the NACA 4412 airfoil test object and by testing where there were different angle of attack. From the results, it can be concluded that measurements made at different angle of attack have different values ​​even with the same wind speed. This happens because there are several factors, and the error factor that the wind tunnel has in the Aerodynamics Laboratory of the Adisutjipto College of Technology reaches an average of 3.6%.
Penerapan Metode Constructed Wetland dalam Upaya Pengelolaan Limbah Air Asam Tambang pada Penambangan Batubara , Berdasarkan Literatur Review Andrawina Wina; Rika Ernawati; Tedy Agung Cahyadi; Waterman SB; Nur Ali Amri
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

An important problem that often occurs due to open pit mining activities from coal mining is the problem of acid mine drainage. Acid mine drainage is formed due to the oxidation of sulfide minerals that are exposed to the outside and then mixes with water, resulting in acidic water and also acid mining water often contains suspended solids that have high concentrations. This acidic mining waste can cause corrosion and dissolve metals so that contaminated water is toxic and can destroy aquatic life. Handling of acid mine drainage as passive treatment with constructed wetland methods is often applied to acid mine drainage treatment in several coal mining companies. By applying the method of constructed wetlands in the handling of acid mine drainage, it is effective in increasing the pH value and reducing the dissolved heavy metal content. This research is to find a management method for acid mine drainage using the constructed wetland method, so it is reviewed again to assist the management process of acid mine drainage by passive treatment with the constructed wetland method. The review was conducted to compare the management method of acid mine drainage with the constructed wetland method and to find out the advantages and disadvantages of swamp plants used in the artificial wetland method.
dan STUDI ZONA ALTERASI HIDROTHERMAL DAERAH SUMI DAN SEKITARNYA, KECAMATAN LAMBU, KABUPATEN BIMA PROPINSI NUSA TENGGARA BARAT Habib Juhair Al Habib
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

ABSTRACT Geologically, the Sumi area and its surroundings contain volcanic igneous rocks which are the products of old volcanoes that are lower Miocene in age. The age of the volcano is considered sufficient in the geological time scale to form hydrothermal alteration. The presence of volcanic rocks that form the dyke and sill structures at the research location indicates that volcanism has taken place. Generally, volcanism is closely related to hydrothermal alteration processes. Thus the Sumi area is very interesting to study further regarding the existence of developing hydrothermal alterations. The purpose of this study is to determine the altration zone that develops at the research location. The method used is in the form of literature studies, field surveys and petrographic analysis to determine the constituent minerals. In the research location, it can be concluded that LP 1 is associated with the alteration zone: prophylitic with andesite wall rocks. The LP 2 alteration zone is a phyllite alteration zone with unknown wall rocks. The LP 3 alteration zone is the outer prophylitic - argillic zone with unknown wall rocks. The LP 4 altration zone is a prophylitic alteration zone with unknown wall rocks. Keyword : Alteration, Hidrothermal, Sumi, Bima
Analisa Geofisika di Sekitar Air Hangat Kaliulo Jawa Tengah lia yunita
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Warm water in Kaliulo Semarang is one of the manifestations of geothermal energy in the Ungaran-Telomoyo-Merbabu-Merapi volcanic area which has the potential for geothermal utilization. The temperature of Kaliulo hot water is around 36-48 0C. This study aims to perform a geophysical analysis around the Kaliulo hot springs to prove the presence of magnetic and anomalies. The methodology used using the magnetic method is correlated with geological data which includes stratigraphic and topographic maps. The equipment used includes the Proton Precision Magnetometer Ground Positioning System, laptop and surfer 15 software and Oasis version 7.0.1 for data processing. up to 1.3 nT through IGRF and daily corrections, this proves that there are magnetic anomalies around warm water manifestations and based on the stacking map there is a continuous structure with increasing depth. The lowest magnetic anomaly values ​​were found around the Kaliulo warm water manifestations.
Pengaplikasian permodelan air tanah pada lingkungan pertambangan satria fitrio; Tedy Agung Cahyadi; Barlian Dwinagara
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Simulations in open pit drainage/dewatering, flooding, and environmental impact assessments were carried out using groundwater flow models. In mining hydrogeology, the utility of numerical models is very limited because of the uncertainty associated with the assumptions of hydrogeological parameters and boundary conditions. Among them is a lack of data in identifying hydrogeological conditions, changes in rainfall and evaporation cycles, changes due to land management due to mining activities, changes in mining work schedules, and post-mining void flooding. Numerical modeling is a tool used in diagnosing, managing, and predicting water behavior in soil, which has become increasingly important in recent years. Although mathematical modeling has its advantages, mathematical modeling cannot be the source of all answers to all questions related to groundwater. Modelling is a dynamic tool that must always be developed for the continuous improvement process, to become a representation of natural phenomena. Thus, this review presents a methodological approach to find out the numerical model, overcoming its capabilities and limitations, in the case of different applications in the mining industry, such as open-pit drainage/dewatering and heap leach. Therefore, the purpose of this study through a literature review conducted is to determine how the application of groundwater modeling in an open-pit mining environment is based on the case study examples in this literature.
OVERVIEW PREDIKSI ALIRAN AIRTANAH PADA PENAMBANGAN OPEN PIT kadek nando setiawan nando; Tedy Agung Cahyadi
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Dealing with water in open pit mining causes many operational, economic and safety problems. as mining depth increases, hydrogeological conditions become more complex, and water inflow to the mine increases every year, mine water disasters occur frequently, resulting in tens of millions of dollars in economic losses. Therefore, it is necessary to predict the flow of water into the mine. This study aims to determine the groundwater flow model that is suitable for mining, and to see the trend of groundwater flow into the pit and determine the factors that influence the flow of water into the mine. The author conducted comparisons of several literatures to determine the best model, analyze groundwater flow trends and factors that influence water flow to the mine. From these results, it is found that, numerical models provide better results than analytical models, groundwater flow trends increase and decrease and fluctuate, with respect to time and depth, as well as many factors that affect the flow of groundwater to the mine pit, including geology, hydrogeology, and mining activities.
Sedimentasi Batubara dan Karakteristik Mikroskopis Sulfur Batubara Daerah Sangatta, Kalimantan Timur Basuki Rahmad Rahmad
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The location of research is in Sangatta, East Kalimantan. The coal bearing formation in the Sangatta area is the Balikpapapn Formation of Middle Miocene. The presence of the number of coal seams in Sangatta is repeated until it reaches the number of more than ten coal seams (multiple seams). This condition is strongly influenced by the depositional environment in which the coal is deposited. The method of data collection is carried out directly on the coal outcrops on the walls of the coal mine, using mapping methods and stratigraphic measurements The coal sedimentation of Sangatta area is generally deposited in the delta plain environment, where the prograded delataic process is intensive in the deltaic system. The rapid prograded generally occurs in delta plain environments, with this prograded causing the development or growth of a delta, so that a lot of coal seams are produced. Coal-bearing sediments consist of four types of deposits: channel deposits, spaly deposits, levee deposits and overbank deposits. Seawater tidal in the delta plain, will bring out the sulfate ions through the tidal channel into the coal swamp, forming pyritic framboidal sulphur in the coal in Sangatta area.
Kontrol Infus Pasien Sri Kusumastuti; Sindung Hadwi Widi Sasono
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Pemasangan infus bertujuan membantu pemenuhan kebutuhan cairan melalui pembuluh darah vena bagi pasien. Ketika cairan habis tenaga medis akan mengunci akses dari selang menuju ke pembuluh darah, agar tekanan tekanan hidrostatik cairan dalam kantung infus sama besarnya dengan tekanan di pembuluh darah sehingga tidak ada yang masuk maupun keluar dari pembuluh darah. Keterlambatan tenaga medis dalam penggantian kantung infus dapat memberikan dampak negatif terhadap pasien. Penelitian yang dilakukan merancang dan membangun alat kontrol infus pasien . Sistem terdiri dari dua bagian yaitu transmitter pada kamar pasien dan 2 receiver ditempatkan di ruang tenaga medis dan kamar pasien. Sensor proximity capasitive digunakan untuk mendeteksi keberadaan cairan di kantung infus, Smart Relay Zelio SR1BD121JD sebagai kontrol alat , bell wireless frekuensi 433 MHz sebagai modul komunikasi nirkabel. Efisiensi dari alat kontrol yang dibuat adalah ketika sensor mendeteksi cairan di kantung infus hampir habis motor akan mengaktifkan penjepit selang infus untuk menutup aliran cairan infus dan memberi peringatan berupa bell di ruang tenaga medis dan pasien sebagai perintah untuk menggantikan kantung infus. Hasil dari pengujian menunjukkan bahwa secara fungsional alat ini dapat bekerja dengan baik, alat mampu melakukan pemantauan keberadaan cairan infus dan sebagai peringatan jika infus membutuhkan pergantian. Hasil pengujian pada rangkaian sensor proximity capasitive saat mendeteksi cairan infus diperoleh tegangan keluaran 12V, dan saat tidak mendeteksi keberadaan cairan infus tegangan keluaran 0V. Jangkauan maksimal dari transmisi bell wireless 300 meter.
Sifat sintered body keramik alumina pada ukuran partikel yang direduksi Ade Indra
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

Alumina sintered bodies (Al2O3), in the form of pellets, have been made by varying the size of particles. The initial particles were sieved on a 200-270 mesh (53-74 μm). The other sizes were refined using a centrifugal hammer mill and then sieved to obtain particles retained on the 270 mesh (> 54 μm) and the 400 mesh (37-53 μm), and those passed the 400 mesh (<37 μm). Polyvinyl alcohol (PVA) liquid as a binder was added into each of these size variations. The process of mixing alumina with PVA (alcohol as a diluent) was carried out for 2 h in a rotary drum with a ceramic ball in it. The mixture was dried at room temperature for 48 h to remove the alcohol. The mixture was smoothed again using a rotary drum for 2 h with a ceramic ball in it. Green bodies were made by uniaxial pressing method at a pressure of 100 MPa. The sintering process was carried out by preheating at a temperature of 700oC with a holding time of 1 h to eliminate PVA, and then the temperature was increased to 1200oC with a holding time of 2 h. During the sintering, the heating rate was maintained at 5oC/minute. The physical characteristics of the alumina sintered bodies were determined by testing the linear shrinkage, density, and microstructure characterization. Density increased with decreasing particle size, from 2.096 gr/cm3 to 2.140 gr/cm3 with an increase in relative density of 2%. The results showed a change in physical properties along with the reduction in the size of the alumina particles.
- Design of control system based on Arduino to Air Blast Freezer with heating cabin Eddy Erham
Retii 2020: Prosiding Seminar Nasional ReTII ke-15
Publisher : Institut Teknologi Nasional Yogyakarta

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Abstract

The rapid development of technology has prompted researchers to continue creating new products or adding new facilities to existing products. For example, adding new facilities to the refrigeration system is being carried out. This research will develop a heating cabin facility in the Air Blast Freezer. For this reason, a special condenser as a heating source will be added and control design will be carried out both for the Freezer and for a special condenser. For control design, this Arduino will be uploaded with the control system program so that it can function as a controller. The results obtained are the refrigeration system can maintain both the temperature of the coolant cabin and the heating cabin at T setpoint -12 0C with Tcut-off = -14 0C and Tcut-in = -10 0C and at T setpoint 44 0C with Tcut-off = 46 0C and Tcut-in = 420C , respectively. In addition, the electric power consumption in the heating cabin is 275.44 Watt and the comparison cabin is 288.36 Watt. The difference in power is 12.92 Watts or 4.48%.

Page 42 of 91 | Total Record : 905

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