Rancang Bangun Mesin Pencacah Limbah Kotoran Sapi

Arifin, Zainal; Prasetyo, Singgih Dwi; Triyono, Teguh; Harsito, Catur; Yuniastuti, Endang

doi:10.21776/ub.jrm.2020.011.02.6

Cited by 9 publications

(9 citation statements)

References 4 publications

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“…The complete simulation results can be seen in Table 3. This indicates that the materials and material and framework structures used in the design have good safety standards [20].…”

Section: Static Simulationmentioning

confidence: 94%

Helmet Stick Design for BC3 Paramlympic Bocia Games

Arifin¹,

Prasetyo²,

Ubaidillah³

et al. 2022

MMEP

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Boccia is one of the fastest-growing Paralympic sports and one of the few sports to have an Olympic rival. The BC3 boccia class is intended for athletes with locomotor dysfunction so severe in all four extremities that they require assistance from assistants and aids in the form of ramps and helmets equipped with pointer sticks. Therefore, the design of the BC3 boccia stick helmet was carried out to meet the needs of the athletes. The design was carried out by action research methodology with the concept of design, static simulation, manufacturing, and the house of quality. The design is divided into three main parts: the helmet bracket, shaft, and lock with bearings using M4 and M8 bolts. Static and design simulations used Fusion 360 and Ansys 2021 R2 software to determine design strength value. Stainless steel material is used in the design, considering the material selection using the Ashby diagram method. The maximum displacement value produced by design is 0.006 mm, and the minimum safety factor is 9.15. The manufacturing results produced helmet products with adequate accuracy and safety standards. A house of quality (HOQ) of 39% indicates that it can meet consumer needs better than other products.

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“…The complete simulation results can be seen in Table 3. This indicates that the materials and material and framework structures used in the design have good safety standards [20].…”

Section: Static Simulationmentioning

confidence: 94%

Helmet Stick Design for BC3 Paramlympic Bocia Games

Arifin¹,

Prasetyo²,

Ubaidillah³

et al. 2022

MMEP

Self Cite

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“…The usual approximation was utilized to discretize pressure, and the simulation algorithm was considered to have converged when the residuals of the continuity, momentum, and energy equations were smaller than 10-6. It shortens computation time while maintaining precision [16] [17].…”

Section: Validation Methodsmentioning

confidence: 99%

Effect of Hole Geometry Shape in Vortex Generators on Fluid Output Temperature: Computational Fluids Dynamics Validation

Mohd Rosli,

Prasetyo,

Dwi Prija Tjahjana

et al. 2023

Mekanika: Majalah Ilmiah Mekanika

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<p>Several methods to enhance heat transfer can be classified into three categories: active, passive, or hybrid. Among these methods, Vortex Generators (VGs) are one passive heat transfer enhancement device widely used in heat exchangers. This study aims to explore the geometric shapes of VGs equipped with longitudinal holes and examine their influence on the outlet temperature of the fluid. For the analysis in this research, a three-dimensional Computational Fluid Dynamics (CFD) simulation using ANSYS Fluent software was employed. The increased heat transfer and flow resistance in the VG geometry were evaluated based on previous research for validation. The study results demonstrate that the simulation produces fluid outlet temperature values and velocity contours that closely resemble the results obtained from the reference study. The validation error of this research was found to be only 0.02%, indicating high-quality and accurate simulation results. Furthermore, the study compared various geometries of the VG holes in the system. Among these geometries, hexagonal-shaped VG holes exhibited high-velocity contours on the VG side while achieving the lowest fluid outlet temperature at approximately 303.53 K. The findings of this study serve as a basis for further developments in enhancing the efficiency and performance of heat exchangers using VGs.</p>

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“…The adsorption rate (dw/dt) can be calculated in terms of the adsorbent/adsorbate pair by Eq. ( 9) to (13) [17].…”

Section: Kinetic Modellingmentioning

confidence: 99%

“…It is non-toxic but should not be consumed, making it safe for use in PPE and work environments [11]. However, proper usage and careful manufacturer instructions are essential to maintain its effectiveness [12][13].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Characteristics of Silica Gel-Water Pairs in Personal Protection Equipment

Hanif,

Adiputra,

Yaningsih

et al. 2023

Mekanika: Majalah Ilmiah Mekanika

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The utilization of RD-type silica gel material as an adsorbent within the Personal Protective Equipment (PPE) layer underwent a comprehensive analysis aimed at elucidating its unique adsorption characteristics through the application of MATLAB programming. This study aims to determine the characteristics of silica gel RD to water vapor in terms of adsorption capacity and rate. A layer modeling approach was employed to simulate the Personal Protective Equipment (PPE), which comprised four distinct layers: the surrounding environment air, the fabric layer, the RD-type silica gel layer, and the air gap separating the silica gel from the skin surface. The simulation encompassed environmental conditions set at 27℃, while the human body's temperature was maintained at 35℃. This study uses a simulation method using GAB (Guggenheim–Anderson–de Boer) modeling calculations to determine isothermal characteristics and LDF (Linear Driving Force) modeling to determine kinetic characteristics with an adsorbent temperature of 26.84℃. The simulation results show that the isothermal characteristics of silica gel RD at a relative humidity of 60% or a relative pressure of 0.6 have an absorption capacity of 0.38 kg/kg. Moreover, the kinetic characteristics of silica gel RD have an absorption rate of 0.38 kg/kg of water vapor with a time of 980 s until a significant reduction in the absorption value occurs.

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Rancang Bangun Mesin Pencacah Limbah Kotoran Sapi

Cited by 9 publications

References 4 publications

Helmet Stick Design for BC3 Paramlympic Bocia Games

Helmet Stick Design for BC3 Paramlympic Bocia Games

Effect of Hole Geometry Shape in Vortex Generators on Fluid Output Temperature: Computational Fluids Dynamics Validation

Adsorption Characteristics of Silica Gel-Water Pairs in Personal Protection Equipment

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