Perhitungan Efisiensi Perpindahan Panas pada Unit Cooler Di PT. XY
Kata Kunci:
Cooler, Pupuk NPK formula, Efisiensi perpindahan panasAbstrak
PT. XY Medan is a company engaged in the production of NPK fertilizer. One of its products is NPK fertilizer with the formulation 12:12:17:2, which contains 12% nitrogen (N) from urea, 12% phosphorus (P2O5), 17% potassium (KCl), and 2% magnesium (MgO). One of the main stages in the production process is cooling, which is carried out using a rotary cooler operating at a rotational speed of 7 rpm and an inclination angle of 2°. The cooling medium is ambient air drawn into the rotary cooler by an exhaust fan. Heat transfer efficiency is an important parameter because insufficient or excessive cooling may affect the quality of the NPK fertilizer. In addition, evaluating heat transfer efficiency is necessary to determine whether the cooling equipment operates efficiently or requires process optimization. The average residence time of the fertilizer in the rotary cooler is 10 minutes. The average inlet temperature of the NPK fertilizer is 66.8 °C with a mass flow rate of 6,000 kg/h, while the average inlet air temperature is 34 °C with an average air flow rate of 12,626.6132 kg/h. The calculation results show that the average heat released by the NPK fertilizer during the cooling process is 28,478.9244 kcal/h, whereas the average heat absorbed by the cooling air is 26,332.98 kcal/h. Consequently, the average heat transfer efficiency of the rotary cooler is 82.09%. The maximum allowable moisture content of NPK fertilizer with the 12:12:17:2 formulation is 2%, while the average final moisture content obtained at the end of the process is 1.444%, indicating that the product meets the required quality standard.
Referensi
[1] S. Wahyu, A. Mustain, And M. A. Rizky, “Analisa Perhitungan Efisiensi Cooling Tower 32 T 821 Pada Utilitas Ii Produksi Ii B Pt Petrokimia Gresik,” Distilat, Vol. 2023, No. 1, Pp. 114–119, 2023, [Online]. Available: Http://Distilat.Polinema.Ac.Id
[2] A. Masyhuri, A. Puspawan, And A. Suandi, “Analisa Efektivitas Heat Exchanger Oil Cooler Sebelum Dan Sesudah Maintenance The Effectiveness Of Heat Exchanger Oil Cooler Before And After Maintenance,” Rekayasa Mekanika, Vol. 6, No. 1, Pp. 23–30, 2022.
[3] U. A. Gani And M. Taufiqurrahman, “Perhitungan Beban Pendinginan Pada Sistem Refrigerasi Air Blast Freezer,” Jtt (Jurnal Teknologi Terapan), Vol. 6, No. 2, Pp. 163–171, 2021.
[4] H. Darmadi, G. Gultom, D. Kurnia, And I. Syabil, “Pengaruh Gesekan Material Raw Mix Penyebab Keausan Terhadap Vertical Mill Pada Tyre Vertical Mill,” Jurnal Teknik Mesin Dan Mekatronika, Vol. 9, No. 1, Pp. 9–15, 2023.
[5] R. Fan Akbari, Y. Sirodz Gaos, And T. Hafzara Siregar, “Analisis Kinerja Kondensor Pada Sistem Pendingin Water Chiller Kapasitas 300 Tr,” Rekayasa Mekanika, Vol. 3, No. 4, Pp. 23–30, 2021.
[6] I. Komang Gede Sastrawan And R. Subagyo, “Analisa Perpindahan Panas Cooling Tower (Induced Draft) Pltu I Pulang Pisau (2 X 60Mw),” Rotary, Vol. 2, No. 2, Pp. 171–182, 2020, [Online]. Available: Https://Ppjp.Ulm.Ac.Id/Journals/Index.Php/Rot
[7] H. Darmadi, R. N. Oktavianus, D. Kurnia, T. Sastrawan Manik, And R. Marshall Ratlalan, “Analisa Hasil Gaya Tekan Untuk emecahkan Nut Pada Dinding Pemecah Di Stasiun Ripple Mill,” Jurnal Teknik Mesin Dan Mekatronika (Journal Of Mechanical Engineering And Mechatronics), Vol. 8, No. 1, Pp. 9–15, 2023.
[8] B. Kurniawan Saputra, M. Ginting, And S. Witjahtjo, “Analisa Pengaruh Penggantian Material Tube Terhadap Kecepatan, Suhu Dan Tekanan Pada Lube Oil Cooler Untuk Pendingin Compressor 103 Di Pt Pusri,” Jurnal Austenit, Vol. 8, No. 2, Pp. 33–35, 2016.
[9] E. Yohanes Setyawan And D. Suhendra, “Analisis Perhitungan Evaporator Dan Kondensor Yang Digunakan Pada Alat Desalinasi Air Laut Sistem Vakum Alami Menggunakan Energi Surya,” Jurnal Flywheel, Vol. 9, No. 1, Pp. 22–29, 2018.
[10] B. Wisely Ziliwu, J. Preston Siahaan, P. Kapal Politeknik Kelautan Dan Perikanan Dumai, J. Wan Amir No, K. Pangkalan Sesai, And K. Dumai Barat, “Perhitungan Beban Pendinginan Pada Sistem Refrigerasi Air Blast Freezer (Calculation Of The Cooling Load In The Air Blast Freezer),” Jurnal Teknologi Terapan) Vol. 6, No. 2, 2020.
[11] A. Naufal, A. Ghifary, A. N. Hasya, T. Riadz, And L. Cundari, “Evaluasi Kinerja Heat Exchanger E-401 Pada Unit Pe3 Pt. Lotte Chemical Titan Nusantara Performance Evaluation Of Heat Exchanger On Pe3 Unit Of Pt. Lotte Chemical Titan Nusantara,” Journal Of Science And Technology, Vol. 20, No. 01, Pp. 1–16, 2022.
[12] D. Purnama, R. Nugraha, And D. V. Rizkia, “Analisis Perbandingan Laju Perpindahan Panas Antara Stainless Steel Dan Cuni Pada Air Cooler Generator Plta Comparative Analysis Of Heat Transfer Rates Between Stainless Steel And Cuni In Plta Generator Air Coolers,” Jurnal Teknologika (Jurnal Teknik-Logika-Matematika), Vol. 12, No. 2, Pp. 216–233, 2022.
[13] Y. Chan And H. Asbanu, “Studi Analisis Tipe Heat Exchanger Terhadap Kinerja Pembangkit Listrik,” Jurnal Media Teknik, Vol. Xii, No. 2, Pp. 1–9, 2022.
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