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UJI KARAKTERISTIK PEMBAKARAN HASIL DESTILASI KARET BEKAS-MINYAK DIESEL DENGAN MENGGUNAKAN DROPLET Aji Indra Hartono; Aqli Mursadin
JTAM ROTARY Vol 1, No 1 (2019): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v1i1.1393

This study aims to look at the combustion characteristics of destillates of used rubber and diesel oil using droplet, the characteristics observed were flash point, ignition delay time, burning rate, and visualization (hight) of fire. Variation in mix RCO 10%, 20%, 30%, 40%, 50%. The tool used is a tool designed by researchers. The result of the flash point study found that the highest velue was found in the mixture of RCO 10% which was 105,7oC and the lowest value was found in mixture of 50% which was 56,6oC. then the highest value of the ignition delay time is in the mixture of 10% which is 1,64 seconds and the lowest value in the mixture is 30% which is 0,98 seconds, then are result of the highest burning rate are found in the mixture 0f 40% which is 3,83 seconds and lowest value is mixed with 20% which is 3,1 second. Then the highest level of fire in the mixture of 10% is 82,3 mm and the lowest is in the mixture of 50% which is 73,2 mm. Keywords: Rubber Compound Oil, Droplet, Flash Point, Ignition Delay Time, Burning Rate

ANALISIS PERPINDAHAN PANAS GLAND STEAM CONDENSOR DI PT PJB UBJOM PULANG PISAU KALTENG Muhammad Rizky Hidayat; Aqli Mursadin
JTAM ROTARY Vol 2, No 2 (2020): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v2i2.2416

Gland Steam Condensor (GSC) adalah alat penukar panas yang mengembunkan uap dari segel poros turbin. Steam bekas ini akan memanaskan air kondensat dari pompa kondensat yang dialirkan melintasi kondensor Gland Steam. Karena panas diserap oleh air kondensat, maka steam bekas dari seal poros akan mengembun kemudian dialirkan ke hotwell hingga bercampur dengan air hotwell. Dari hasil penelitian koefisien perpindahan kalor tertinggi pada tabung adalah 80.491,93 btu/hr ft2 pada hari Rabu jam 14.00. Diketahui bahwa koefisien perpindahan panas pada tabung terendah adalah 79.011,94 btu/hr ft2 pada hari Senin jam 16.00. Koefisien perpindahan panas tertinggi pada cangkang adalah 5.294.695 btu/jam ft2 pada hari Jumat pukul 14.00, koefisien perpindahan panas cangkang terendah adalah 2.762.553 btu/jam ft2 pada hari Selasa pukul 11.00. Perpindahan panas aktual tertinggi adalah 1.528.694.1 btu/jam hari Jumat jam 14.00, perpindahan panas aktual terendah adalah 713.159.522 btu/jam pada hari Kamis jam 8.00. Diketahui laju perpindahan kalor maksimum sebesar 1.797.918 btu/jam pada pukul 14.00, laju perpindahan kalor maksimum sebesar 790.348 btu/jam pada hari Kamis pukul 08.00. Diketahui efisiensi tertinggi sebesar 90,25% pada hari Kamis pukul 08.00. Dengan efisiensi rata-rata antara kisaran 86,29%. Gland Steam Condensor (GSC) is a heat exchanger it condenses steam from a turbine shaft seal. This used steam will heat condensate water from a condensate pump which is flowed across Gland Steam condensor. Because the heat is absorbed by condensate water, used steam from the shaft seal will condense and then flow to hotwell until it mixes with hotwell water. From the results of the study the highest heat transfer coefficient on the tube is 80,491.93 btu/hr on Wednesday at 2:00 p.m. It is known that the heat transfer coefficient on the lowest tube is 79,011.94 btu/hr on Monday at 4:00 p.m. The highest heat transfer coefficient on the shell is 5,294,695 btu/hr on Friday at 14:00, the lowest shell heat transfer coefficient is 2,762,553 btu/hr on Tuesdayat 11: 00. The highest actual heat transfer is 1,528,694.1 btu/hr on Friday at 2:00 p.m., the lowest actual heat transfer is 713,159,522 btu/hr on Thursday at 8:00. It is known that the maximum heat transfer rate is 1,797,918 btu/hr at 2:00 p.m., the maximum heat transfer rate is 790,348 btu/hr on Thursday at 8:00. It is known that the highest efficiency is 90.25% on Thursday at 8:00. With average efficiency between the range of 86.29%.

ANALISIS PERPINDAHAN PANAS PADA EKONOMISER DI PLTU PULANG PISAU Syahrul Fajar Setiawan; Aqli Mursadin
JTAM ROTARY Vol 2, No 1 (2020): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v2i1.2000

Ekonomiser adalah alat yang digunakan untuk memanaskan air umpan sebelum memasuki boiler dengan memanfaatkan panas dari gas pembakaran di boiler. Dengan meningkatnya suhu air pengisi boiler, juga diharapkan meningkatkan efisiensi boiler. Dalam penelitian ini, pengumpulan data dilakukan di ruang kontrol dan data yang diambil, yaitu Tc.i (suhu economizer air yang masuk), Tc.o (suhu air keluar dari economizer), Th.i (suhu gas buang sebelum memasuki economizer) dan Th.o (suhu gas asap keluar dari economizer). Koefisien perpindahan panas tertinggi 4260.492 Btu / h.ft2. ° F dan koefisien perpindahan panas terendah 4251.243 Btu / h.ft2. ° F. Efisiensi tertinggi 87,43% dan terendah 80,76%. Economizer is a tool used to heat feed water before entering boiler by utilizing heat from the combustion gas in the boiler. With the increasing temperature of boiler filler water, it is also expected to increase boiler efficiency. In this study, data collection was carried out in the control room and the data that was taken, Tc.i (the temperature of the incoming water economizer), Tc.o (the exit water temperature of the economizer), Th.i (flue gas temperature before entering economizer) and Th.o (flue gas temperature exit the economizer). High heat transfer coefficient 4260,492 Btu/h.ft2.°F and low heat transfer coefficient 4251,243 Btu/h.ft2.°F. Highest the efficiency 87,43 % and the lowest 80,76 %.

ANALISIS KINERJA BOILER DI PT. PLN (PERSERO) WILAYAH KALIMANTAN SELATAN KALIMANTAN TENGAH SEKTOR PLTU ASAM - ASAM Jenta Yudi Perageminisko; Aqli Mursadin
JTAM ROTARY Vol 1, No 2 (2019): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v1i2.1743

Boiler is a tool that serves to convert water into pressurized steam. In the heat causes heat boiler heat transfer through the water into pressurized steam that is heated from the fuel in the furnace.And often a problem of burning in the boiler is less than the maximum. Because the incoming energy is energy derived from the fuel, there is some energy lost during the combustion process it happens because the fuel has a low heat so that the combustion is not maximal cause the boiler performance is reduced. To avoid this, it is necessary to maintenance for the boiler component in order to improve performance. Direct method is "input - output method" because this method uses only the heat in the fuel and steam coming from the boiler output. Boiler efficiency of research results from the date of March 27, 2017 until the date of 10 April 2017 with a total average - average efficiency were analyzed, namely 74.4%. On April 3, 2017 the calculated efficiency of 76.57% indicates that the boiler performance is still feasible to operate but on April 4, 2017 the boiler efficiency becomes 71.59%. Boiler efficiency at commissioning, with boiler efficiency of 85.13% and in 2017 done the boiler efficiency calculation theoretically on 27 March until 10 April 2017 with total average 74.4% where the efficiency decrease equal to 10.73%. Factors affecting the efficiency ratio are in the coal content used. Keywords:Boiler, Performance, Direct Method

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

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

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

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

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

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

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

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