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All Journal Jukung (Jurnal Teknik Lingkungan) Jurnal Elemen Scientific Journal of Mechanical Engineering Kinematika JTAM ROTARY
Aqli Mursadin
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Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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ANALISIS KINERJA TURBIN UAP BERDASARKAN PERFORMANCE TEST PLTU PT. INDOCEMENT P-12 TARJUN Apriandi, Riyki; Mursadin, Aqli
Scientific Journal of Mechanical Engineering Kinematika Vol 1 No 1 (2016): SJME Kinematika June 2016
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (570.011 KB) | DOI: 10.20527/sjmekinematika.v1i1.26

Abstract

This study aims to determine the performance of steam turbine PT. Indocement Tarjun Plant 12 by comparing the results of data obtained during each performance test in 1999, 2016, 2017, and 2018. This research data is taken from the control room of PT. Indocement Tarjun, variable data obtained in the form of load, main inlet steam temperature, main inlet steam pressure, HP heater feed outlet temperature, HP heater feed outlet pressure, main steam flow, and turbine by pass flow. The data is processed to get the turbine heat rate and the efficiency per time of each performance test and then averaging the data results over time, then comparing the turbine heat rate and the average efficiency of each performance test. The calculation of turbine heat rate using heat & mass balance method, turbine efficiency is obtained by comparing the energy of 1 kW with turbine heat rate and multiplying 100%. The result of the average heat turbine calculation per performance test ie August 1999 is 2.546, April 2016 2,537, June 2017 2.56, and May 2018 2.67. The average value of turbine efficiency in August 1999 was 39.30%, April 2016 39.43%, June 2017 39.07%, May 2018 37.46%. Turbine power plant performance of PT Indocement Tarjun Plant 12 decreased from 1999 to 2018 by 1.84%.
ANALISIS PENURUNAN SISTEM KOMPRESOR PADA PEMBANGKIT PT. INDOCEMENT TUNGGAL PRAKARSA, TBK. KALIMANTAN SELATAN Firmansyah, Ilham Arif; Mursadin, Aqli
JTAM ROTARY Vol 3, No 2 (2021): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v3i2.4123

Abstract

Supply of compressed air has an important role in continuity of operation power plant, failures that occur in operation of engine in this unit can affect all plant operations that can result in decreased production levels. To determine the magnitude of loss of pressure or energy loss lost in pressurized air piping system at plant located in PT. Indocement Tunggal Prakarsa, Tbk. Tarjun Plant-12. Evaluation of pressure reduction losses in the air system is focused on losses caused by system leakage and pressure drops in the distribution lines caused by several factors including friction in straight pipes, bends, fittings, reducers and existing components, and knowing the loss of costs due to compressor pressure drop. The pressure drop in the pipe is very dependent on pipe diameter, besides distance and supporting components on piping system also affect the pressure drop. Based on calculation, there was a decrease in pressure of 1603660,895 Pa, from pressure drop caused by friction of straight pipe and connection and actual condition of pipe surface which was likely to have been corroded, making surface rough. system decline that occurred in the compressor resulted in a loss of operational costs of 5,760,451 rupiah / week.
PENGARUH VARIASI KEDALAMAN PEMOTONGAN DAN KECEPATAN PEMOTONGAN TERHADAP KEKASARAN PERMUKAAN ALUMINIUM 7075 Nurhabibi, Awaludin; Mursadin, Aqli
JTAM ROTARY Vol 5, No 2 (2023): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v5i1.8460

Abstract

Riset ini bermaksud untuk mengetahui pengaruh variasi kedalaman pemotongan serta kecepatan pemotongan atas nilai kekasaran permukaan aluminium 7075. kesimpulan kecepatan pemotongan berpengaruh atas nilai kekasaran permukaan spesimen. Bertambahnya kecepatan pemotongan yang dipakai meangkibatkan kualitas makin rendah (halus). Kedalaman pemotongan yang tinggi menyebabkan menurunnya gaya pemotongan, setiap kedalaman pemotongan yang dipakai terdapat selisih nilai kekasaran permukaan spesimen. Makin besar kedalaman pemotongan yang dipakai mengakibatkan meningkatnya kekasaran permukaan, ketika kombinasi dari kecepatan pemotongan serta kedalaman pemotongan terlihat hasil yang paling rendah (halus) pada kecepatan pemotongan 14.7 m/menit serta 0,5 mm, sedangkan kekasaran paling tinggi (kasar) pada kecepatan pemotongan 11.3 m/menit serta perbandingan kedalaman pemotongan 1. mm. Semakin tinggi kecepatan pemotongan maka semakin rendah (halus) tingkat kekasaran dan kedalaman pemotongan yang dalam berpengaruh terhadap nilai hasil kekasaran yang diperoleh maka makin tinggi (kasar). This research intends to determine the effect of variations in cutting depth and cutting speed on the surface roughness value of aluminum 7075. Based on the results of data analysis, it can be concluded that cutting speed has an effect on the surface roughness value of the specimen. The higher the cutting speed used, the lower the quality results (smooth). The high cutting depth causes a decrease in the cutting force and the shear cross-sectional area, each cutting depth used has a difference in the surface roughness of the specimen. The greater the depth of cutting used will cause an increase in surface roughness, when the combination of cutting speed and depth of cut is found to have the lowest roughness (fine) at a cutting speed of 14.7 m/min and 0.5 mm, while the highest roughness (coarse) at a cutting speed of 11.3 m/min and a cutting depth ratio of 1. mm. The higher the cutting speed, the lower (fine) the level of roughness and the greater the depth of cutting, the higher the roughness value obtained (coarse).
ANALISIS KINERJA COOLING TOWER MENGGUNAKAN METODE RANGE DAN APPROACH DI PLTU ASAM-ASAM Rahman, Rahman; Mursadin, Aqli
JTAM ROTARY Vol 4, No 2 (2022): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v4i2.6411

Abstract

Beberapa faktor yang mempengaruhi kinerja menara pendingin diantaranya adalah kondisi distribusi aliran air dan udara pada menara pendingin. Semakin merata aliran air dan udara, semakin baik kinerja menara pendingin. Agar distribusi aliran air dan udara dapat merata, maka perlu dilakukan analisis kinerja menara pendingin sesuai dengan metode yang digunakan untuk mengetahui apakah menara pendingin masih mampu mendinginkan air secara optimal atau kinerjanya menurun. Metode yang digunakan adalah dengan menghitung range dan approach, dan parameter yang dibutuhkan adalah suhu air masuk dan suhu pendinginan menara keluar, dan suhu bola basah menara pendingin. Hasil analisis menara pendingin menunjukkan rentang nilai terendah sampai tertinggi adalah 14,01oC - 15,05oC, nilai pendekatan 8,03oC - 9,16oC, dan nilai efektifitas 60,95% - 64,71%. Dari rentang, pendekatan, dan nilai efektivitas di atas dapat disimpulkan bahwa kinerja menara pendingin dalam air pendingin pada saat itu masih relatif baik. Naik turunnya nilai range, approach dan efektivitas dipengaruhi oleh temperatur lingkungan dan kerja menara pendingin. There are several factors that affect the cooling tower performance including the condition of the distribution of water flow and air in the cooling tower. The more even distribution of water and air flow, the better the cooling tower performance. In order for the distribution of water and air flow to be evenly distributed, it is necessary to analyze the performance of the cooling tower according to the method used to determine whether the cooling tower is still able to cool water optimally or its performance decreases. The method used is by calculating the range and approach, and the parameters needed are the temperature of the intake water and the cooliing temperature of the exit tower, and the wet bulb temperature of the cooling tower. The results of the cooling tower analysis show that the range values from the lowest to the highest are 14.01oC - 15.05oC, the approach value is 8.03oC - 9.16oC, and the effectiveness value is 60.95% - 64.71% . From the range, approach, and effectiveness values above it can be concluded that the cooling tower's performance in cooling water at that time was still relatively good. The rise and fall of the range, approach and effectiveness values are influenced by environmental temperature and cooling tower work. 
ANALISIS TEMPERATUR LINGKUNGAN TERHADAP KINERJA COOLING TOWER DI PT. INDOCEMENT TUNGGAL PRAKARSA TBK. P-12 TARJUN KALIMANTAN - SELATAN Saputra, Irwan; Mursadin, Aqli
JTAM ROTARY Vol 3, No 2 (2021): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v3i2.4140

Abstract

Sistem kerja pendingin di PT. Indocement Tunggal Prakarsa Tbk Tarjun Plant-12 menggunakan cooling tower marley fan 3 tipe mechanical draft, counterflow flow 10.221 m3/h yang berfungsi untuk mendinginkan air keluaran dari kondensor melalui nozzle untuk menyemprotkannya dengan menyemprotkan sebagian air ke udara dan mengeluarkannya ke atmosfer, sehingga air jatuh ke bak air melalui eliminator melayang. Suhu lingkungan mempengaruhi kinerja menara pendingin. Semakin dingin lingkungan semakin baik kinerja menara pendingin. Pengaruh suhu lingkungan dan kinerja pada menara pendingin menjadi pembahasan dalam penelitian ini. Hasil perhitungan dalam penelitian menunjukkan bahwa suhu lingkungan mempengaruhi kinerja menara pendingin dimana pada pagi sampai sore hari pada suhu atau cuaca tertentu kinerja menara pendingin mengalami peningkatan dan penurunan yang signifikan. Sedangkan efisiensi rata-rata range dan approach dari tahun 2016 hingga 2019 mengalami penurunan efisiensi sebesar 8,44%, penurunan range sebesar 1,24°C dan penurunan approach sebesar 0,82°C. Cooling work system at PT. Indocement Tunggal Prakarsa Tbk Tarjun Plant-12 uses a cooling tower marley fan 3 type mechanical draft, counterflow flow 10.221 m3 / h which functions to cool the output water from the condenser through a nozzle to spray it by spraying some water into the air and discharging it into the atmosphere, so water falls into the water basin through a drift eliminator. Environmental temperature affects the cooling tower performance. The cooler the environment the better the cooling tower performance. The effect of environmental temperature and performance on cooling tower is the discussion in this study. The results of calculations in the study show that the environmental temperature affects the cooling tower performance where in the morning until late afternoon at certain temperatures or weather the cooling tower performance experiences a significant increase and decrease. While the average efficiency, the range and approach from 2016 to 2019 has decreased efficiency by 8.44%, decreasing the range by 1.24 ° C and decreasing the approach by 0.82 ° C.
UJI KARAKTERISTIK PEMBAKARAN CRUDE PALM OIL - MINYAK DIESEL DENGAN MENGGUNAKAN DROPLET Maulana, Aziz; Mursadin, Aqli
JTAM ROTARY Vol 4, No 1 (2022): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v4i1.4138

Abstract

This study aims to find out and see the characteristics of combustion of crude palm oil and diesel oil using droplets, the characteristics observed are the flashpoint of a fuel at the lowest temperature (Flash Point), the time from the heater under the droplet until the fire ignites (Ignition delay time), burning time of each droplet (Burning rate) and measure the height of fire on the results of combustion. Variation of the mixture of fuel Crude Palm Oil and diesel oil namely 10% Crude Palm Oil and 90% Diesel Oil, 20% Crude Palm Oil and 80% Miyak Diesel, 30% Crude palm Oil and 70% Diesel Oil, 40% Crude Palm oil and 60% Diesel Oil, and 50% Crude Palm Oil and 50% Diesel Oil. The tool used is a combustion chamber designed by researchers, Crude Palm Oil, Diesel Oil, Thermocouple and others. The results of this study are the lowest flashpoint results obtained in the mixture of 10% crude palm oil has a lower flash point value of 97⁰C and the highest value in the 50% crude palm oil fuel mixture is 152⁰C, the result of Ignition Delay Time is the value the lowest in the crude palm oil mixture of 10% has an average value of 0.52 seconds while the highest value in the crude palm oil fuel mixture is 50%, the average value is 2.72 seconds, then the results of the Burning Rate are the lowest value in the mixture of ingredients crude palm oil fuel 10% the average burning rate is 3.36 seconds while the highest value in the crude palm oil mixture is 40%, the average burning rate is 4.4 seconds and the result of visualization of fire or flame height is the highest value from a mixture of 10% crude palm oil with a fire height of 71.18 mm while those with the lowest fire height in a mixture of crude palm oil 50% have a high flame 66.45 mm.
ANALISIS KINERJA CONDENSER SHELL AND TUBE UNIT 2 DI PT. PLN (PERSERO) SEKTOR ASAM-ASAM KALIMANTAN SELATAN Hairudin, Hairudin; Mursadin, Aqli
JTAM ROTARY Vol 3, No 2 (2021): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v3i2.4139

Abstract

Theecondenser is a type of heat exchanger that functions to condense fluid. On steam powermsystems. Thevmain function ofmthe condenser is to convert steam into liquid. The purpose of this study is to determine the value and influence of heat balance, heat transfer coefficient, pressure drop and condenser efficiency.Thewresults offthissstudy indicate that in 2018 thee average heat balance (Q) was obtained at 356,017,533.46 Kj / hour while in 2019 the results of the average heat balance (Q) were 640,293,647,066 Kj / hour, fouling factor was not affect the balance sheet. The average gross heat transfer coefficient (UD) in 2018 amounted to 204,274.25 Kj / hour.m2. C and the average net heat transfer coefficient (UC) was 206,378 Kj / hr.m2. ° C whereas in 2019 the average heat transfer coefficient is obtained by the average gross heat transfer coefficient (UD) of 366,544.07 Kj / jam.m2. ° C and the Clean heat transfer coefficient (UC) is 448,554 Kj / h.m2. ° C.Fouling factor is very influential onnthe heatwtransfer coefficient because the greater the fouling in the tube will result in the inhibition of theeheat transfer rate in the tube, so that the heat transfer coefficient decreases. The pressure drop in 2018 is still within the permissible limits, with an average of 504.28 bars and 2019 of 513.03 bars. The effectiveness of the condenser in 2018 is an average of 23.330 after maintenance has been obtained, the average effectiveness of the condenser in 2019 is 40.743
PENGGUNAAN KARBON TERAKTIVASI DARI TANAH GAMBUT SEBAGAI ADSORBEN TERHADAP EMISI GAS BUANG DAN PERFORMA MESIN Gusnadi, Wayan Tedi; Mursadin, Aqli
JTAM ROTARY Vol 7, No 1 (2025): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v7i1.13552

Abstract

Adsorben terbuat dari arang yang telah di aktivasi menjadi arang aktif. Arang aktif terbuat dari berbagai macam bahan yang kandungan karbonnya tinggi, pada penelitian ini menggunakan adsorben yang berbahan dari tanah gambut dan adsorben diletakkan pada saluran buang kendaraan bermotor. Penelitian ini menggunaka metode eksperimen untuk mengetahui penggunaan karbon aktif tanah gambut sebagai adsorben dengan karbonasi 500˚C & 600˚C terhadap uji emisi gas buang (HC & CO) dan performa mesin (Torsi) pada kendaraan bermotor. Dari hasil pengujian dapat diketahui bahwa arang teraktivasi dari tanah gambut dengan karbonasi 600˚C dapat menurunkan emisi gas buang lebih baik dibandingkan 500˚C adapun penurunan emisi HC yaitu sebesar  46,8%, Penurunan emisi CO yaitu sebesar 43,1% dan mengalami penurunan performa torsi sebesar 2,74%. Hal ini menunjukkan adsorben arang tanah gambut mampu menurunkan kadar emisi gas buang dan tidak mengganggu sirkulasi gas buang pada kendaraan bermotor sehingga gas buang yang dihasilkan lebih baik untuk lingkungan dan makhluk hidup. The adsorbent used in this study was derived from peat soil, which was activated to become activated carbon. Activated carbon can be produced from various materials with high carbon content; in this research, the adsorbent was made from peat soil and placed in the exhaust system of motor vehicles. The study employed an experimental method to assess the use of peat soil-based activated carbon as an adsorbent, carbonized at 500°C and 600°C, on exhaust emission tests (HC & CO) and engine performance (Torque) of motor vehicles. The test results indicate that peat-based activated carbon carbonized at 600°C reduced exhaust emissions more effectively than at 500°C. Specifically, HC emissions decreased by 46.8%, CO emissions by 43.1%, with a torque performance reduction of 2.74%. These findings demonstrate that peat-based activated carbon is capable of lowering exhaust gas emissions without disrupting the exhaust gas circulation in motor vehicles, leading to cleaner emissions for the environment and living organisms.
Co-Authors Abdul Ghofur Abdul Ghofur Ahmad Fitrianor Aji Indra Hartono Anggun Angkasa Bela Persada Apriandi, Riyki Aryadillah, Ahmad Firmansyah, Ilham Arif Gusnadi, Wayan Tedi Hairudin, Hairudin Heni Pujiastuti Jenta Yudi Perageminisko Maulana, Aziz Muhammad Rizky Hidayat Nurhabibi, Awaludin Rahman Rahman Saputra, Irwan Syahrul Fajar Setiawan