Energy-Efficient Mine Ventilation Practices

Demirel, Nuray

doi:10.1007/978-3-319-54199-0_16

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…Sering kali jalur ini tidak efektif karena tidak melewati area-area dimana pasokan udara lebih dibutuhkan untuk operasional tambang. Dari penelitian sebelumnya, diperkirakan kebutuhan energi untuk ventilasi tambang mencapai 50% dari total konsumsi dan sekitar 20-40% dari total biaya energi untuk penambangan (Demirel, 2018). Metode pengukuran gas tracer (perunut) dapat diterapkan untuk mengetahui adanya kebocoran udara.…”

Section: Pendahuluanunclassified

Metode Gas Tracer Untuk Evaluasi Efisiensi Ventilasi Tambang Bawah Tanah

Widiatmojo

Widodo²,

Sasaki

2021

ind. mining, prof. jurnal

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Ventilasi tambang bawah tanah mempunyai peran penting untuk memastikan kecukupan suplai udara segar untuk pekerja tambang, mesin bakar internal, melarutkan gas dan partikulat, maupun menjaga suhu dan kelembaban udara. Design yang tidak benar dapat menyebabkan kebocoran dan resirkulasi udara, menurunkan efisiensi energi untuk sistem ventilasi secara total. Di lain hal, difusi turbulensi mengendalikan penyebaran gas dan partikulat.Makalah ini membahas penggunaan gas tracer untuk mengevaluasi efisiensi dari sistem ventilasi tambang. Dengan mencocokkan hasil pengukuran lapangan dengan simulasi numerik, kuantitas suplai udara yang terbuang disebabkan karena kebocoran dapat dievaluasi. Selain itu, laju pertukaran udara di front tambang juga di analisa berdasarkan data peluruhan gas. Sebagai hasil analisa, sekitar 53.5% udara bersih terbuang langsung melalui kipas utama. Sedangkan, laju pertukaran udara di salah satu front tambang, adalah sekitar 6.48 kali per jam.

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Section: Pendahuluanunclassified

Metode Gas Tracer Untuk Evaluasi Efisiensi Ventilasi Tambang Bawah Tanah

Widiatmojo

Widodo²,

Sasaki

2021

ind. mining, prof. jurnal

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“…The integration of jet fan ventilation systems into car park and tunnel ventilation holds substantial promise for advancing the concept of carbon neutrality. These systems have been shown through empirical evidence to exhibit a heightened level of energy efficiency when compared to traditional methods [5,6]. This observation gains even greater significance within the current landscape, characterized by a discernible shift towards the replacement of conventional systems with environmentally conscious alternatives.…”

Section: Introductionmentioning

confidence: 99%

CFD Assessment of Car Park Ventilation System in Case of Fire Event

Rahif,

Attia

2023

Applied Sciences

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This scientific article presents the results of computational fluid dynamics (CFD) simulations conducted using OpenFOAM to evaluate the effectiveness of a jet fan ventilation system in managing the dispersion of smoke resulting from a car fire incident within an underground car park spanning a total area of 21,670 m2, situated in Tabriz, Iran. The primary objective of the study is to determine the velocity fields and evaluate visibility conditions within a 10 m radius to gauge the efficiency and effectiveness of the system. The study employs a smoke concentration production rate of 5.49 × 10−4 kg/m3s for simulations involving fire scenarios. A total of 17 fire scenarios are examined, each extending 30 m in all directions from the initial location. The research findings demonstrate that the placement of jet fan components plays a significant role in the system’s efficiency, with fans positioned near the ceiling leading to back-layering. To mitigate this issue, the recommended design solution involves the strategic installation of multiple jet fan arrays in specific zones with the addition of 10 extra jet fans, effectively curbing lateral smoke dispersion. Furthermore, the analysis of air flow rates shows that when jet fans direct an excessive airflow towards the exhaust shafts (which have a designated flow rate of 22.5 m3/s), recirculating flows occur, leading to the dispersion of smoke throughout the car park. Consequently, the utilization of low-velocity jet fans (11.2 m/s) proves to be more effective in clearing smoke compared to high-velocity jet fans (22.3 m/s). The study also emphasizes the importance of optimal positioning of supply and exhaust shafts to achieve effective smoke control, highlighting the need for placing them on opposite walls or minimizing airflow turns. Additionally, the research underscores the significance of fire resistance in jet fan units, as their failure during fire incidents can have severe consequences.

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Introduction

Awuah–Offei¹

2017

Energy Efficiency in the Minerals Industry

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Energy-Efficient Mine Ventilation Practices

Cited by 5 publications

References 7 publications

Metode Gas Tracer Untuk Evaluasi Efisiensi Ventilasi Tambang Bawah Tanah

Metode Gas Tracer Untuk Evaluasi Efisiensi Ventilasi Tambang Bawah Tanah

CFD Assessment of Car Park Ventilation System in Case of Fire Event

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