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STUDI KOMPUTASI ALIRAN PEMANAS PADA INKUBATOR TELUR BERKAPASITAS 400 TELUR DENGAN MENGGUNAKAN SUMBER PANAS BUMI BERENTALPI RENDAH Hendrarsakti, Jooned; Fachri, Muhammad Faisal; Lukmana, Muhammad Arifudin
Bina Teknika Vol 13, No 1 (2017): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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This study aims to analyze the possibility of using geothermal energy as an alternative energy source for the egg incubator hatchery with capacity of 400 eggs. Geothermal resource used in the process of retrofitting has a temperature of 70°C with a maximum flow of 2 liters/s in accordance with the data of geothermal resources at Tangeung - Cibugur, Cianjur regency.Based on the results of the feasibility studies that have been done, the source of geothermal energy can be used for heating egg incubator in order to reach adequate incubation conditions (temperature 36 to 38.5 ° C and a relative humidity of 50-60%). In the process of retrofitting, the design of the incubator used is forced draft incubator. Its components are heat exchanger, fans, and a water tray. The type of heat exchanger that used is cross flow, one fluid mixed, one fluid unmixed. It uses a staggered arrangement of copper pipe as a heat exchange surface.Incubator with geothermal energy is well used by using 5 fans with volume flow rate 0,0094 – 0,0141 m3/s on the condition of the inlet air temperature is 23-27°C and a minimum pipe temperature is 65°C.

ANALISIS PERBANDINGAN SIFAT ALIRAN PADA MODEL 2D AXISYMMETRIC DENGAN MODEL 3D DENGAN METODE NUMERIK Hendrarsakti, Jooned; Prakoso, A. D.; Montreano, Donny
Bina Teknika Vol 12, No 2 (2016): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (520.974 KB)

Many previous studies of ejector have been conducted to understand and maximize the ejector performance. The study can be in form of experiments, analytical, and numerical simulation. The numerical simulation looks for the most effective and efficient effort and time in modeling flow process inside the ejector. Model simplification becomes one of solution in conducting simulation effectively. Three dimensional models in general are applied to an ejector that would be analyzed. These models can be compared to the simpler model, namely axisymmetric 2D model. The current study investigated the comparison between 3D and 2D models using numerical solution. Three types of ejectors from different application were used as the objects of the study. The analysis was conducted by comparing the qualitative and quantitative results. The results show that qualitatively the 2D axisymmetric model has good comparison to the 3D model. Quantitatively, 2D axisymmetric model has good similarity to 3D model for ejector performance parameters, such as entrainment ratio and Mach number with biggest difference of 5.7%. However, the velocity and pressure distribution have bigger discrepancies at both axial and radial directions at the area with extreme change, such as at throat nozzle. It can be concluded that the 2D axisymmetric model can be used as substitution of 3D model when the objective is only to obtain ejector performance and qualitative study.

STUDI ANALITIK DAN KOMPUTASI ALIRAN PEMBULUH DARAH PADA BAGIAN UJUNG DAN TENGAH CAROTID BIFURCATION Hendrarsakti, Jooned; Raymond, Raymond
Bina Teknika Vol 14, No 1 (2018): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (271.718 KB)

One of the most commonly discussed Cardiovascular diseases is a stroke uniform caused by the stagnation of blood flow to the brain due to the narrowing of blood vessels by fat (atheroclerosis). This study examines the effect of reducing the number of lumen areas and the location of the blockage to human blood velocity, pressure, and flow rate by using CFD (Computational Fluid Dynamics). In the modeling stage, 13 kinds of luminal cross-sectional area were collaborated with 2 clogging locations and 1000 calculation was done. From the simulation, results obtained the value of pressure velocity and discharge. From the results show that the value of velocity reaches peak at 28-30% of lumen cross-sectional area and decreases at 30% cross section. The simulated debit values show that the larger the area of the lumen cross section, the higher the flowing blood flow and the opposite. While the analytic results show the value of speed is increasing and the decreasing pressure caused by the reduction of the luminal cross-sectional area, the value of the calculation of the analytic calculation shows the same values

A review of single-phase pressure drop characteristics microchannels with bends Endro Junianto; Jooned Hendrarsakti
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 12, No 1 (2021)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/j.mev.2021.v12.38-44

Microfluidic use in various innovative research, many fields aimed at developing an application device related to handling fluid flows in miniature scale systems. On the other hand, on the use of micro-devices for fluid flow the existence of bends cannot be avoided. This research aims to make a comprehensive study of fluid flow characteristics through a microchannel with several possible bends. This study was conducted by comparing Reynolds number versus pressure drop in a serpentine microchannel to gain bends loss coefficient. The result showed that the fluid flow with Re 100 did not affect the pressure drop, but on the Reynolds number above that, the pressure drop was increased along with the appears of vortices in the outer and inner walls around the channel bends which causes an increase in an additional pressure drop. The other finding shows that the reduction in diameter bend tube can increase the pressure drop.

STUDI ANALITIK DAN KOMPUTASI ALIRAN PEMBULUH DARAH PADA BAGIAN UJUNG DAN TENGAH CAROTID BIFURCATION Jooned Hendrarsakti; Raymond Raymond
Bina Teknika Vol 14, No 1 (2018): Bina Teknika
Publisher : Faculty of Engineering UPN "Veteran" Jakarta

One of the most commonly discussed Cardiovascular diseases is a stroke uniform caused by the stagnation of blood flow to the brain due to the narrowing of blood vessels by fat (atheroclerosis). This study examines the effect of reducing the number of lumen areas and the location of the blockage to human blood velocity, pressure, and flow rate by using CFD (Computational Fluid Dynamics). In the modeling stage, 13 kinds of luminal cross-sectional area were collaborated with 2 clogging locations and 1000 calculation was done. From the simulation, results obtained the value of pressure velocity and discharge. From the results show that the value of velocity reaches peak at 28-30% of lumen cross-sectional area and decreases at 30% cross section. The simulated debit values show that the larger the area of the lumen cross section, the higher the flowing blood flow and the opposite. While the analytic results show the value of speed is increasing and the decreasing pressure caused by the reduction of the luminal cross-sectional area, the value of the calculation of the analytic calculation shows the same values

STUDI KOMPUTASI ALIRAN PEMANAS PADA INKUBATOR TELUR BERKAPASITAS 400 TELUR DENGAN MENGGUNAKAN SUMBER PANAS BUMI BERENTALPI RENDAH Jooned Hendrarsakti; Muhammad Faisal Fachri; Muhammad Arifudin Lukmana
Bina Teknika Vol 13, No 1 (2017): Bina Teknika
Publisher : Faculty of Engineering UPN "Veteran" Jakarta

This study aims to analyze the possibility of using geothermal energy as an alternative energy source for the egg incubator hatchery with capacity of 400 eggs. Geothermal resource used in the process of retrofitting has a temperature of 70°C with a maximum flow of 2 liters/s in accordance with the data of geothermal resources at Tangeung - Cibugur, Cianjur regency.Based on the results of the feasibility studies that have been done, the source of geothermal energy can be used for heating egg incubator in order to reach adequate incubation conditions (temperature 36 to 38.5 ° C and a relative humidity of 50-60%). In the process of retrofitting, the design of the incubator used is forced draft incubator. Its components are heat exchanger, fans, and a water tray. The type of heat exchanger that used is cross flow, one fluid mixed, one fluid unmixed. It uses a staggered arrangement of copper pipe as a heat exchange surface.Incubator with geothermal energy is well used by using 5 fans with volume flow rate 0,0094 – 0,0141 m3/s on the condition of the inlet air temperature is 23-27°C and a minimum pipe temperature is 65°C.

ANALISIS PERBANDINGAN SIFAT ALIRAN PADA MODEL 2D AXISYMMETRIC DENGAN MODEL 3D DENGAN METODE NUMERIK Jooned Hendrarsakti; A. D. Prakoso; Donny Montreano
Bina Teknika Vol 12, No 2 (2016): Bina Teknika
Publisher : Faculty of Engineering UPN "Veteran" Jakarta

Many previous studies of ejector have been conducted to understand and maximize the ejector performance. The study can be in form of experiments, analytical, and numerical simulation. The numerical simulation looks for the most effective and efficient effort and time in modeling flow process inside the ejector. Model simplification becomes one of solution in conducting simulation effectively. Three dimensional models in general are applied to an ejector that would be analyzed. These models can be compared to the simpler model, namely axisymmetric 2D model. The current study investigated the comparison between 3D and 2D models using numerical solution. Three types of ejectors from different application were used as the objects of the study. The analysis was conducted by comparing the qualitative and quantitative results. The results show that qualitatively the 2D axisymmetric model has good comparison to the 3D model. Quantitatively, 2D axisymmetric model has good similarity to 3D model for ejector performance parameters, such as entrainment ratio and Mach number with biggest difference of 5.7%. However, the velocity and pressure distribution have bigger discrepancies at both axial and radial directions at the area with extreme change, such as at throat nozzle. It can be concluded that the 2D axisymmetric model can be used as substitution of 3D model when the objective is only to obtain ejector performance and qualitative study.

Potensi Pemanfaatan Serat Selulosa sebagai Material Bahan Baku dalam Sintesis Filter Udara Non-Woven sesuai Standar TAPPI T 205 Irwan Suriaman; Mardiyati; Jooned Hendrarsakti; Ari Darmawan Pasek
Jurnal Teknologika Vol 10 No 2 (2020): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Industry 4.0 era materials used by entrepreneurs should be recycled, environmentally friendly, renewable with less chemical content. Indonesia as a tropical country has a large land area with the potential to produce the largest natural fiber in the world. One opportunity that can be applied to the utilization of natural fibers in air filters that currently use dominant materials is synthetic fibers. natural fiber has the advantage because it does not contain toxic chemicals, local raw materials, and is easily produced. This research will analyze the mechanical and morphological characteristics of biological fibers that have great potential as pre-filter raw material. Analysis of mechanical properties through tensile strength testing for single fibers and morphological analysis through scanning electron microscopy (SEM). Tensile testing was the results are; palm oil has a tensile strength of 620 MPa; 998 MPa and 213 MPa flax coconut fiber. For the morphological test results from SEM analysis for ramie fiber, it looks solid without fiber holes; The fibers appear to be many small fibers bound to one another while coir fibers have many pore holes in one observed fiber.

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