Modeling the movement of hulled millet in agitated drum dryer with discrete element method

Horvath, Daniel; Poós, Tibor; Kismányoky, Tamas

doi:10.1016/j.compag.2019.03.033

Cited by 17 publications

(18 citation statements)

References 21 publications

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“…Energi yang digunakan dalam pengering buatan adalah energi panas yang berasal dari berbagai sumber, diantaranya: biomassa, bahan bakar gas, dan bahan bakar minyak (Adapa et al, 2005;Delgado et al, 2016). Konversi sumber panas menjadi panas biasanya menggunakan tungku atau boiler melalui proses pembakaran (Horváth et al, 2019;Sonsiri et al, 2019). Uap panas hasil pembakaran tidak secara langsung bersentuhan dengan bahan, namun melalui alat penukar panas terlebih dahulu supaya bahan tidak terkontaminasi oleh bau asap sumber panas yang ditimbulkan (Telci et al, 2010).…”

Section: Pendahuluanunclassified

“…Uap panas hasil pembakaran tidak secara langsung bersentuhan dengan bahan, namun melalui alat penukar panas terlebih dahulu supaya bahan tidak terkontaminasi oleh bau asap sumber panas yang ditimbulkan (Telci et al, 2010). Uap panas yang dihasilkan selanjutnya dapat digunakan untuk pengeringan produk (Horváth et al, 2019;Mujumdar, 2006;Sonsiri et al, 2019).…”

Section: Pendahuluanunclassified

“…Salah satu pengering buatan yang dapat digunakan untuk mengeringkan produk pangan adalah pengering tipe drum berputar. Keseluruhan sistem pengering tipe drum berputar merupakan suatu sistem yang kompleks yang melibatkan interaksi panas dengan komponen alat pengering (Horváth et al, 2019;Mujumdar, 2006;Sonsiri et al, 2019). Pengering tipe drum berputar pada penelitian ini merupakan pengembangan dari beberapa perbaikan pengering drum berputar yang ada.…”

Section: Pendahuluanunclassified

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Perpindahan Panas pada Pengering Tipe Drum Berputar pada Kondisi Tanpa Beban

Syska

Ropiudin

2020

agroteknika

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Pengering tipe drum berputar yang dikembangkan merupakan sistem yang terdiri atas empat subsistem yaitu: tungku pembakaran, tangki air, penukar panas, dan silinder pengering. Penelitian ini bertujuan untuk mengetahui mekanisme pindah panas pengering tipe drum berputar, besarnya kehilangan panas, dan efisiensi termal sistem selama proses pengeringan tanpa beban. Metode penelitian yang digunakan adalah metode analitik pada pengering tipe drum berputar. Variabel penelitian meliputi: (a) variabel pengukuran yaitu perubahan suhu pada masing-masing subsistem, spesifikasi geometri pengering, suhu lingkungan, dan (b) variabel perhitungan meliputi koefisien konveksi bahan, kehilangan panas, dan efisiensi termal. Pengukuran dilakukan setiap 10 menit dan diakhiri pada saat suhu masuk silinder pengering konstan. Data hasil pengukuran dianalisis menggunakan persamaan pindah panas sehingga diperoleh nilai pindah panas untuk mengetahui besarnya nilai kehilangan panas dan efisiensi sistem. Hasil penelitian menunjukkan mekanisme pindah panas pada pengering tipe drum berputar terjadi secara konduksi dan konveksi. Total panas yang hilang pada subsistem tungku pembakaran 261,270 MJ, subsistem tangki air 20,416 MJ, subsistem penukar panas 0,017 MJ, dan subsistem silinder pengering 0,577 MJ. Efisiensi termal pada subsistem tungku pembakaran 30,17%, subsistem tangki air 74,30%, subsistem penukar panas 99,97%, dan subsistem silinder pengering 99,02%. Efisiensi total sistem terhadap besarnya bahan bakar yang diberikan adalah 75,87%.

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Section: Pendahuluanunclassified

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Perpindahan Panas pada Pengering Tipe Drum Berputar pada Kondisi Tanpa Beban

Syska

Ropiudin

2020

agroteknika

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“…In some DEM applications such as ball mill [28], jaw crusher [24], high pressure roll grinding [29,30], agitated drum dryer [31], V-blender [32], and screw conveyor [33], the calculation of power draw is expressed by the sum of the scalar product of the force applied on the i-node and the velocity vector of the same node, v i , with the following expression:…”

Section: Gyratory Crushermentioning

confidence: 99%

Torque Analysis of a Gyratory Crusher with the Discrete Element Method

et al. 2021

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Comminution by gyratory crusher is the first stage in the size reduction operation in mineral processing. In the copper industry, these machines are widely utilized, and their reliability has become a relevant aspect. In order to optimize the design and to improve the availability of gyratory crushers, it is necessary to calculate their power and torque accurately. The discrete element method (DEM) has been commonly used in several mining applications and is a powerful tool to predict the necessary power required in the operation of mining machines. In this paper, a DEM model was applied to a copper mining gyratory crusher to perform a comprehensive analysis of the loads in the mantle, the crushing torque, and crushing power. A novel polar representation of the radial forces is proposed that may help designers, engineers, and operators to recognize the distribution of force loads on the mantle in an easier and intuitive way. Simulations with different operational conditions are presented and validated through a comparison with nominal data. A calculation procedure for the crushing power of crushers is presented, and recommendations for the selection of the minimum resolved particle size are given.

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“…The discrete element method (DEM) has been developed for modeling granular materials (Cundall and Strack 1979). The method has many applications, which include soil (Tamás et al 2013), agricultural grain crops (Horváth et al 2019), chemical, food and pharmaceutical materials, railway crushed stone (González 2018), and stone construction (Bagi 2007) modeling. More advanced models are also able to calculate heat conduction between particles (Li et al 2019), electrostatic charge states (Hogue et al 2008), and wear of geometries effected by contacted particles (Schramm et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Digital Twins for Lighting Analysis: Literature Review, Challenges, and Research Opportunities

Hassan¹,

Angelaki²,

Alfaro³

et al. 2022

ECMS 2022 Proceedings Edited by Ibrahim A. Hameed, Agus Hasan, Saleh Abdel-Afou Alaliyat

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Light modelling, simulation, and photometric calculations are by now common tasks in the lighting design process. These practices contribute to the definition and comparison of suitable layout arrangements and help predict the impact of lighting devices. Those tasks demand the use of tools to support the simulation of different scenarios, the analyses of their pros and cons according to different criteria (e.g., health and safety, perception, aesthetics, energy consumption, and costs), and decision-making. Digital twins have emerged as relevant technologies to simulate and visualize different ``what-if'' scenarios associated with physical entities and processes. In this paper, we investigate the state-of-the-art research concerning the use of digital twins for supporting lighting analysis in the urban/outdoor context. We also present and discuss challenges and research opportunities related to the design, implementation, and validation of digital twins in this domain.

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Modeling the movement of hulled millet in agitated drum dryer with discrete element method

Cited by 17 publications

References 21 publications

Perpindahan Panas pada Pengering Tipe Drum Berputar pada Kondisi Tanpa Beban

Perpindahan Panas pada Pengering Tipe Drum Berputar pada Kondisi Tanpa Beban

Torque Analysis of a Gyratory Crusher with the Discrete Element Method

Digital Twins for Lighting Analysis: Literature Review, Challenges, and Research Opportunities

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