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Info-Teknik
Published by Universitas Lambung Mangkurat
ISSN : 08532508     EISSN : 24599964     DOI : http://dx.doi.org/10.20527
Core Subject : Engineering,
Engineering
Jurnal Info – Teknik menerbitkan artikel – artikel karya orisinil dan signifikan pada Bidang Rekayasa Teknik.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 425 Documents
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ANALISIS PERFORMA TURBINE OIL COOLER DI PLTU ASAM ASAM UNIT 1 Akhmad Syarief; Rangga Mahesa
INFO-TEKNIK Vol 22, No 1 (2021): INFOTEKNIK VOL. 22 NO. 1 JULI 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i1.11477

Abstract

Performance analysis of a heat exchanger is a method used to determine the performance of a heat exchanger. The purpose of this study is to determine the heat balance value, heat transfer coefficient, pressure drop, and calculate efficiency. In this study discussed about shell and tube heat exchanger type which serves to cooling Turbine Generator shaft bearing oil with Cooling Tower water. The data studied for 1 month in September and 2 data point were taken in 1 day, namely at 3:00 a.m. (WITA) and 12.00 WITA (daytime) and not describe the system as a whole. The method in this study using the principles of heat transfer and the LMTD approach (logarithmic Mean Temperature Difference) and the kern method. The results of this study indicate that the average heat balance (Q) is 159,798.9 Btu/dhr with the heat transfer area (A) of 580,172 ft2 and the average heat transfer coefficient equal to 10,965 Btu/hr.ft2.oF. For the reduction of heat exchanger is still within the allowable limit, namely with an average of 0.01 kg/cm2. As for the efficiency of the heat exchanger observed it has an average which is quite low at 51.95% but still recommended to operate.
UTILIZATION SPENT BLEACHING EARTH AS A FILLER OF MATERIAL CONSTRUCTION Yusnimar Yusnimar; J. N. Rahman; P. Ningendah
INFO-TEKNIK Vol 22, No 1 (2021): INFOTEKNIK VOL. 22 NO. 1 JULI 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i1.11209

Abstract

Spent bleaching earth (SBE) is a waste from cooking oil industry. It is categorized as one of the hazardous and toxic materials, because oil residues in it. Generally, SBE is overcome by landfill and it’s sometimes become problems. Basically SBE contains SiO2 and the size of the grain is very fine, almost the same as the fine aggregate of sand used for making brick. In this study, the making of brick used SBE with several variations (2.75% - 27.52%) of the total raw materials used. Brick making methods are based on SNI 03-0348-1989 for raw material ratio, SNI 03-0348-1989 for molding and presshing, SNI 03-6825-2002 for drying and curing. The brick quality was determined based on fineness modulus parameters, dry weight, brick absorption to water and compressive strength. Brick contain SBE 2.75% was produced with molding size of 15cm x 30cm x 9cm, it has an average dry weight of 7.80 kg, compressive strength of 8.95 MPa and absorbing power of 1.26%.
METODE PERBAIKAN PERKERASAN JALAN DI KABUPATEN KATINGAN KALIMANTAN TENGAH Novendri Agung Walen Paul Asin; Salonten Salonten; Murniati Murniati
INFO-TEKNIK Vol 22, No 1 (2021): INFOTEKNIK VOL. 22 NO. 1 JULI 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i1.11640

Abstract

The Hampalit – Petak Bahandang village is categorized class IIIC road, that is local roads and neighborhood roads that can be traversed by motorized vehicles including loads with a width not exceeding 2.1 meters, a length not exceeding 9 meters, and the heaviest axle load allowed is less of 8 tons. The purpose of this study is to determine the type of road damage and provide alternative ways of handling road damage. The research location is on the Hampalit – Petak Bahandang with a road length of 34,960 kilometers, with a road width of 5.00 meters, left and right shoulder width of 1.00 meters, drainage channel width of 0.30 meters and the type of existing pavement construction is HRS-Base. Type of damage that occurred there were 5 types of damage consisting of: crocodile crack (0.082 %), fine crack (0.127 %), edge crack (0.010 %), skid crack (0.006% %), hole (0.227%). The damage that occurred was dominated by hole damage with a percentage of damage 0.227%, and for total percentage of damage to the entire 34.960 kilometers road on the Hampalit – Petak Bahandang road section was 0.452 %. The method used for repairs is the 2011 Bina Marga standard repair method and has been converted using the 2018 Work Unit Price Analysis (Division 10 on Performance Maintenance Works).
ANALISIS KARAKTERISTIK DAN FORMULASI RAWA DENGAN PENDEKATAN VARIABEL HIDROLOGI RAWA Nilna Amal
INFO-TEKNIK Vol 22, No 1 (2021): INFOTEKNIK VOL. 22 NO. 1 JULI 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i1.11559

Abstract

The characteristics of wetlands can be recognized through their hydrological and ecological conditions. The hydrology of a wetland determines whether it can function initially or change. Research on the hydrology of wetlands can start from applying an appropriate water balance and a runoff generation formula for a wetland. Hydrological analysis of wetlands, including peatlands as part of watersheds, requires proper research according to the circumstances. A water balance formula calculating the equilibrium between rainfall, evapotranspiration, surface water, and groundwater is essential for recognizing wetland conditions. Analysis of the watershed flow where the wetland is located can use the rational formulas and the unit hydrograph methods of generated flow that consider suitability for the wetland conditions. This analysis is carried out by calculating the influence of variables on the wetland; rainfall, surface flow, and water detention. Other variables related to soil properties have an influential aspect in determining flow generation. The overall variables effect is reflected in the changes in the downstream flow hydrograph of a watershed. It mainly seems in the recession curve of the flood hydrograph. The peak of the flow decreases in order to wetland presence. This change is a composite of the upstream flow alteration and wetland storage influence. The influence of wetland areas is also found in flood volume, which shows a proportional relationship, namely that the increase in wide wetland areas affects the decrease in flood volume.
RESETTING VERTICALITY FLARE STACK DENGAN PENGATURAN TEGANGAN GUY WIRE Sulardi Sulardi; Sabar P. Simatupang; Lukman Lukman
INFO-TEKNIK Vol 22, No 1 (2021): INFOTEKNIK VOL. 22 NO. 1 JULI 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i1.11627

Abstract

The flare stack is an important installation in the oil and gas industry as a tool to burn off-specification gas so as not to harm the environment. The problem faced is that there is a slope on the riser vertical stake so that it exceeds the safe limit (out of tolerance). The purpose of this research is to determine the method of resetting the riser flare stack so that the verticality returns to the uprightness as required by API 521. The method of resetting the verticality flare stack is carried out by adjusting the tension on all guy wire support vertical riser stacks so that each receives a voltage of 1.2 - 1.4 tons and mutually eliminate the stresses that occur when the riser stak gets a load from the outside or as a result of plant operations. The results showed that the guy wire support tension resetting method was proven to be suitable and suitable for use properly and safely with a maximum erection of 145 mm (1/800L) vs. API 521 standard tension maximum of 232mm (1/500L). The results of this study also recommend that the resetting work method that has been proven to be suitable and suitable for use can be replicated to overcome problems in the Pertamina other unit.
KAJIAN LAMA WAKTU PENGALIRAN TERHADAP BESAR PERESAPAN YANG TERJADI PADA SALURAN DRAINASE PORUS Irfan Prasetia
INFO-TEKNIK Vol 12, No 1 (2011): INFOTEKNIK VOL. 12 NO. 1 2011
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v12i1.1775

Abstract

Dalam metode dan perumusan Saluran Drainase Porus oleh Sunjoto (1993), parameter yang digunakan untuk menentukan besarnya debit kehilangan air di saluran adalah tinggi air dalam saluran (m), koefisien permeabilitas tanah (m/s), lebar tengah saluran (m) dan panjang saluran. Adapun pada penelitian ini mencoba untuk mengembangkan metode dan perumusan tersebut dengan mengkaji apakah lama waktu pengaliran memiliki pengaruh terhadap besar peresapan yang terjadi pada saluran drainase porus. Penelitian dilakukan dengan memanfaatkan permodelan saluran draianse porus yang terdapat di Fakultas Teknik Unlam Banjarbaru. Data penunjang seperti data hidrologi dan sampel tanah diperoleh dari data proyek pembuatan model saluran drainase porus dan sumur resapan di Fakultas Teknik Unlam Banjarbaru. Dari hasil penelitian dapat disimpulkan bahwa fungsi waktu (lama waktu pengaliran), ternyata tidak mempengaruhi terhadap besarnya peresapan yang terjadi pada sebuah Saluran Drainase Porus. Sehingga formula yang dikemukakan oleh Sunjoto (1993) ternyata memang telah sesuai dengan aplikasinya di lapangan. Terbukti dari data debit rembesan (Q rembesan) yang terjadi pada 2 kali percobaan konstan sebesar  Q = 3,82 l/d pada percobaan pertama dalam rentang waktu 9 menit dan Q = 3,84 l/d pada percobaan kedua dalam rentang waktu 15 menit
ANALISIS STRUKTUR PADA GIRDER OVERHEAD CRANE SWL 30 TON Jefriansyah Jefriansyah; Ma'ruf Ma'ruf
INFO-TEKNIK Vol 15, No 2 (2014): INFOTEKNIK VOL. 15 NO. 2 2014
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v15i2.223

Abstract

Overhead crane is a device used to move goods. Overhead cranes are very important during the production period, if there is a problem in the overhead crane, it can disrupt the production process. Therefore, load testing was conducted to determine the results of the girder deflection, whether large deflection is still within the limits that are allowed or not. This study to calculate the girder overhead crane occur in the loading variations, and adjust the properties of the material used. The amount of deflection is calculated using the equation Castigliano theorem. research on the loading of 28.7 tons, 30 tons, and 37.5 tons with theoretical calculations obtained deflection value calculation results is 6,060mm, 6,335mm, and 7.918 for the imposition of the middle girder (1/2span). 5,191mm, 5,410mm and 6,763mm for the loading side (1/3span). The simulation results  are 5,649mm, 5,834mm, and 6.898 for the imposition of the middle girder (1/2span) and 4,986mm, 5,101mm and 6,032mm for the loading side (1/3span). The results obtained have great value below allowable deflection value is 23.75 mm. Keywords: Girder Overhead crane, load variation, deflection.
Tipologi dan Morfologi Arsitektur Suku Banjar di Kal-Sel Ira Mentayani; Dila Nadya Andhini
INFO-TEKNIK Vol 8, No 2 (2007): INFOTEKNIK VOL. 8 NO. 2 2007
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v8i2.1732

Abstract

Tujuan penelitian ini adalah ingin mengetahui tipologi dan morfologi arsitektur daerah Suku  Banjar di Kalimantan Selatan sehingga ketidakjelasan tipe arsitektur Banjar yang ada saat ini dapat dipecahkan secara ilmiah.Populasi dalam penelitian ini adalah rumah tradisional yang berumur rata-rata lebih dari 50 tahun. Sampel yang digunakan adalah sampel bertujuan (purposive sample) dengan pengumpulan data menggunakan metode bola salju (snow ball sampling). Analisis data, dimulai dengan menelaah seluruh data, reduksi data, menyusun data-data dalam satuan-satuan, mengkategorisasikan, dan memeriksa keabsahan data. Tahap analisis dilanjutkan dengan tahap penafsiran data. Bagian analisis yang terpenting adalah mengkategorisasikan yang didasarkan pada metode analisis komparatif.Hasil penelitian menunjukkan Tipomorfologi arsitektur suku Banjar dapat dijelaskan berdasar beragam tema yang mempengaruhi perkembangan arsitektur Suku Banjar, yaitu; berdasar kesamaan yang menjadi ciri khas (geometrik), berdasar pengaruh kebudayaan suku, berdasar pengaruh kepercayaan dan agama, berdasar tata ruang, berdasar struktur dan konstruksi, berdasar lokasi, dan berdasar ornamen/ ragam hias.Keberadaan masing-masing tema yang mempengaruhi pembentukan tipo- morfologi Suku Banjar di atas saling berhubungan erat antar satu dengan yang lainnya sehingga tidak bisa dilepaskan dalam pembentukan pemahaman.
PEMBUATAN BRIKET BIOARANG BERBAHAN BAKU SAMPAH ORGANIK DAUN KETAPANG SEBAGAI ENERGI ALTERNATIF Yuli Ristianingsih; Primata Mardina; Aditya Poetra; Marini Yosi Febrida
INFO-TEKNIK Vol 14, No 1 (2013): INFOTEKNIK VOL. 14 NO. 1 2013
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v14i1.313

Abstract

Almond tree (Terminalia catappa L.) leaves waste in Southern Kalimantan region has not been used optimally. This waste has a calorific value high enough so that it can be converted into a renewable energy alternative. The One alternative energy that can be generated from the conversion of almond tree leaves waste is biocharcoal briquette. This research aims to study the effect of composition and particle size of biocharcoal briquettes on the characteristics and quality of burning biocharcoal briquettes made from almond tree leaves waste. almond tree leaves waste initially dried in the sun then performed to form charcoal carbonization process. And then Formed charcoal was filtered with a variety of particle sizes (250,355 and 500 μm) and mixed with starch adhesive mixed with a percentage weight ratio of charcoal: heavy starch adhesive 90:10% w/w. Mixture of biocharcoal briquettes are then printed using a mold manual briquettes and the results analyzed. Analysis was conducted on the analysis of moisture content, ash content, volatile content, heating value. Start up time, the length of time to ignition briquettes and burning speed. The results were showed that the resulting biocharcoal briquettes have characteristics of water content from '.'7 to 2.92%, from 39.'4 to 4'.'0% volatile content, ash content 0.22 to 0.52% and a calorific value of 574'-6308 cal / gram. As for the analysis of the combustion quality of the results were obtained startup time from 4.'3 to 4.26 min, 97-'24 min duration of combustion and burning rate of 0.''8 to 0.'60 g / min.
SISTEM ALAT MONITORING UNTUK PENGENDALI SUHU DAN KELEMBABAN GREENHOUSE BERBASIS INTERNET OF THINGS Arafat Arafat; Ibrahim Ibrahim
INFO-TEKNIK Vol 21, No 1 (2020): INFOTEKNIK VOL. 21 NO. 1 JULI 2020
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v21i1.8961

Abstract

Greenhouse is an agricultural technology to protect plants from uncertain weather, with the Greenhouse will be able to maintain and distribute temperature, soil moisture, sunlight, and air humidity evenly with an optimal level. Even so the environmental conditions inside the Greenhouse will always change due to the influence of the weather environment outside the Greenhouse which is uncertain, so there is a need for monitoring so that plants inside the Greenhouse can grow optimally. With IoT (Internet of Things) technology, Greenhouse farmers do not need to visit the Greenhouse to monitor and control the environment inside the Greenhouse. This is because with the IoT technology Greenhouse farmers can monitor and control v1ia an Android smart phone. The things that can be monitored are temperature, humidity of the room, soil moisture, sunlight, water discharge, and soil moisture, besides that farmers can also control the temperature and humidity of the Greenhouse environment, as well as the provision of water to plants in the Greenhouse. The system used in this study uses ESP32 as a control center and uses DHT11, Soil Moisture, as a sensor to measure IoT temperaturei, humidityi and soil moisture in the greenhousei. As a control in the greenhouse there are two control outputs, namely water pump 1 and water pump 2. ESP32 will read the temperature, humidity and soil moisture sent from the DHT11 sensor which will determine whether the water pump will turn on or not. To read the soil moisturei sensor used is capacitivei soil moisturei, if the soil moisture reaches a predetermined threshold, the water pump 2 will turn on and drain the water into a poly bag through drip drops.

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