Usulan Desain Alternatif Exhaust Hood Untuk Meningkatkan Kinerja Exhaust System Pada Proses Hardfacing di Workshop 1 PLN Pusharlis

Oktavianingtyas, Nesvi (2025) Usulan Desain Alternatif Exhaust Hood Untuk Meningkatkan Kinerja Exhaust System Pada Proses Hardfacing di Workshop 1 PLN Pusharlis. Project Report. [s.n.]. (Unpublished)

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Abstract

Berdasarkan hasil observasi, pengambilan data lapangan, analisis permasalahan, dan penyusunan usulan desain, diketahui bahwa sistem exhaust pada proses hardfacing grinding roll di Workshop 1 PT PLN Pusat Pemeliharaan Ketenagalistrikan UP2W belum bekerja secara optimal. Kondisi tersebut terutama disebabkan oleh posisi exhaust hood yang ditempatkan di samping sumber asap sehingga kurang efektif dalam menangkap asap pengelasan yang secara alami bergerak ke atas akibat pengaruh thermal buoyancy. Selain itu, penggunaan plain opening hood dengan nilai entry loss factor yang tinggi menyebabkan kerugian tekanan yang cukup besar sehingga menurunkan kemampuan hisap blower. Meskipun jarak antara exhaust hood dan sumber asap masih berada dalam batas standar yang diperbolehkan, posisi pemasangannya di samping sumber asap tetap mengurangi efektivitas penangkapan asap. Oleh karena itu, diusulkan perbaikan desain berupa pemindahan posisi exhaust hood ke atas sumber asap, penggantian jenis hood menjadi bell-mouth hood, penyesuaian dimensi sistem exhaust, serta penambahan venturi duct untuk meningkatkan kecepatan aliran udara. Usulan desain tersebut diharapkan dapat meningkatkan efektivitas penangkapan asap serta meningkatkan kinerja sistem exhaust pada proses hardfacing grinding roll.
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Based on the observations, field data collection, problem analysis, and the proposed design development, it was found that the exhaust system used in the hardfacing process of grinding rolls at Workshop 1 of PT PLN Pusat Pemeliharaan Ketenagalistrikan UP2W has not operated optimally. This condition is mainly caused by the exhaust hood being positioned beside the fume source, resulting in ineffective capture of welding fumes that naturally rise due to thermal buoyancy. In addition, the use of a plain opening hood with a high entry loss factor causes significant pressure losses, thereby reducing the blower's suction performance. Although the distance between the exhaust hood and the fume source is still within the maximum allowable standard, its side-mounted position reduces the effectiveness of fume capture. Therefore, an improved design is proposed by relocating the exhaust hood above the fume source, replacing the existing hood with a bell-mouth hood, adjusting the exhaust system dimensions, and adding a venturi duct to increase airflow velocity. The proposed design is expected to improve fume capture efficiency and enhance the overall performance of the exhaust system in the hardfacing grinding roll process.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	hardfacing grinding roll, exhaust system, bell-mouth hood, thermal buoyancy, venturi duct, hardfacing grinding roll, sistem exhaust, bell-mouth hood, thermal buoyancy, venturi duct.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ762.E93 Exhaust systems
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Nesvi Oktavianingtyas
Date Deposited:	15 Jul 2026 06:13
Last Modified:	15 Jul 2026 06:13
URI:	http://repository.its.ac.id/id/eprint/134844

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