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All Journal AUSTENIT Innovative: Journal Of Social Science Research
Kholidah , Nurul
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Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Other

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Pengaruh Variasi Temperatur terhadap Specific Fuel Consumption pada Proses Pengeringan Biji Kopi menggunakan Alat Rotary Dryer Berbahan Bakar Gas LPG Marambang, Alfi Yory; Sundari, Okta; Kholidah , Nurul; Bow, Yohandri; Effendy, Sahrul
Innovative: Journal Of Social Science Research Vol. 4 No. 5 (2024): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i5.14909

Abstract

Metode pengeringan memungkinkan produk tetap berkualitas tinggi untuk waktu yang lebih lama. Salah satu metode alternatif untuk mengeringkan biji kopi adalah dengan menggunakan pengeringan jenis rotary. Rotary dryer merupakan salah satu perangkat yang sering digunakan dalam industri pengeringan yang terdiri dari tabung berputar yang dipanaskan dari luar, dan udara panas diarahkan ke dala m tabung untuk menguapkan kelembaban dari permukaan material yang berputar di dalamnya. Pada penelitian bertujuan untuk mengurangi kadar air pada biji kopi dengan nilai kadar air sesuai dengan standar SNI 01-2907:2008 yaitu sebesar 12,05%. Hasil dari penelitian ini didapatkan kadar air 12,05% pada temperatur 80oC pada waktu selama 300 menit, dengan laju pengeringan paling tinggi sebesar 1,063 kg/jam m2 dengan nilai Specific fuel Consumption (SFC) meningkat hingga 0,383 Kg/kWh.
THE ENHANCEMENT OF TEMPERATURE IN BOILER BY STEAM INJECTION Septiana, Iriani Reka; Daniar, Rima; Puspa, Dilia; Kholidah , Nurul
AUSTENIT Vol. 15 No. 2 (2023): AUSTENIT: October 2023
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v15i2.7043

Abstract

The boiler is equipment widely used in various industrial sectors such as power plants, fertilizer plants, paper mills, and others. The combustion chamber is an important part of the boiler which can determine the quality of the steam product. The main problem has happened in combustion chambers such as unburned hydrocarbon/carbon loss which is called fouling. Fouling has occurred in many boilers, which use coal or oil as fuel for the production of steam and decreases boiler performance. The purpose of this research is to increase temperature by adding steam injection to reduce fouling to compare with and without steam injection. Two indicators that have the potential to enhance heat transfer are the elevation in temperature and the reduction in fouling percentage. The variables in this research were air flow of 15 L/min, 17,5 L/min, and 20 L/min and steam injection pressure of 2 bars, 3 bars, and 4 bars. The maximum temperature enhancement was 37,5% in 15 L/min of air flow at a steam injection pressure of 2 bars and 3 bars. The maximum fouling abatement was 78,57% in 15 L/min at a steam injection pressure of 4 bars.
Co-Authors Daniar, Rima Effendy, Sahrul Marambang, Alfi Yory Puspa, Dilia Septiana, Iriani Reka Sundari, Okta Yohandri Bow