Article Per Year (5 Year)
p-Index From 2021 - 2026
0.983
P-Index
This Author published in this journals
All Journal OSEATEK ENGINEERING Jurnal Teknologi REKAYASA Machine : Jurnal Teknik Mesin Jurnal Pensil : Pendidikan Teknik Sipil Community Empowerment
Irfan Santosa
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

Published : 23 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 23 Documents
Search

 1   2   3 
RANCANG BANGUN MESIN CNC LASER GRAFIR UNTUK PEMBUATAN BIDANG SILINDER DAN DATAR IRFAN SANTOSA; Mafazi Rifqi; Mouhammad Agus Shidiq
Machine : Jurnal Teknik Mesin Vol 8 No 2 (2022): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v8i2.2741

Abstract

The development of technology that is growing rapidly at this time has had an impact in various fields, including in the industrial sector. In Indonesia, industrial equipment is still mostly imported from abroad. This of course makes it difficult for the industry in Indonesia to develop because of the high price of industrial equipment. To overcome this, it is necessary to conduct research on the design of industrial equipment for domestic production. In this article, a CNC tool is designed that can be used for engraving or in other terms to automatically draw a pattern on a certain area. Laser Engraving Machines require a circuit control system that functions as the brain of the machine. The purpose of this research is to design a control system for a laser engraving machine using a microcontroller. In this study, the method used is an experimental method in the form of a laser engraving machine design including a driving mechanism, structural elements and the design process. All parameters will be set and operated through the CNC control system so that the laser engraving machine can operate properly. The design planning of this CNC Laser Engraving machine has dimensions with a length of 600 mm, a width of 500 mm. The assembly process for the CNC Laser Engraving Machine is classified into several parts, namely: Basic Machine Framework with an assembly time of 50 minutes, Y-Axis Assembly Moves Tool Front-To-Back with an assembly time of 32 minutes, X-Axis Assembly Moves Tool Side-To-Side with assembly time of 13 minutes, Rotary Table with assembly time of 25 minutes. The performance results of each Axis on this CNC Laser Engraving machine have a high level of accuracy, namely: X Axis = 100%, Y Axis = 100%, Rotary Axis = 100%
NUMERICAL ANALYSIS OF WINDOW OPENINGS AS VENTILATION FOR 3-STOREY BUILDINGS IN A TROPICAL AREA Hermawan, Okky Hendra; Putra Ramadhan, Laksana; Santosa, Irfan
Jurnal Pensil : Pendidikan Teknik Sipil Vol. 14 No. 3 (2025): Jurnal Pensil : Pendidikan Teknik Sipil
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jpensil.v14i3.58369

Abstract

Building form has a significant influence on energy efficiency, especially in tropical regions where minimizing cooling demand is crucial. Natural ventilation is widely recognized as a passive strategy to reduce energy use while maintaining indoor comfort; however, limited research has integrated experimental validation and CFD analysis in tropical institutional buildings. This study investigates the effect of window openings on airflow and thermal distribution in a three-story library building in Pemalang, Central Java, Indonesia. Field measurements and CFD simulations were conducted, with validation showing good agreement (RMSE = 0.69). Results indicated that while the first floor achieved adequate circulation and stable temperatures, the upper floors experienced stagnation zones and higher indoor heat accumulation, suggesting suboptimal natural ventilation. Parametric simulations demonstrated that square pivot windows at 60° and 90° provided the most effective performance, improving airflow and reducing indoor temperatures. The findings highlight the importance of optimized window design as a passive cooling strategy to enhance thermal comfort and energy efficiency in tropical buildings without reliance on mechanical systems.
Modeling of conventional single slope solar still (CS4) with phase change material (PCM) Santosa, Irfan; Dwi Septiyanto, Muhamad; Andriyanto, Sholikhin; Budiana, Eko Prasetya Budiana; Hadi, Syamsul; Wijayanta, Agung Tri
Rekayasa Vol 18, No 1: April 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i1.29386

Abstract

This study investigates the capability of two-dimensional Computational Fluid Dynamics (CFD) simulation to estimate the temperature distribution pattern and velocity contours in a single slope solar still that uses soybean wax as a phase change material (PCM). A triangular mesh model is employed in the simulation. The basin geometry uses a mesh with 20,402 nodes and 10,000 elements, while the PCM geometry uses a mesh consisting of 9,272 nodes and 4,500 elements. This study introduces an equation developed based on the Dunkle, Bulk Motion, and Chilton-Colburn analogies to estimate the Nusselt number in the solar still. The water temperature (Tw), the inner surface temperature of the glass cover (Tg), and the PCM temperature (Tpcm) are determined experimentally, whereas the performance of the conventional solar distillation system is predicted theoretically using the experimental results. The results demonstrate that the use of soybean wax as a PCM positively influences the temperature distribution and streamline patterns within the single slope solar still. In the morning, the temperature and velocity distributions reveal that the isotherm lines are parallel to the lower right segment of the cavity, indicating that conduction is the dominant heat transfer mechanism. As the day progresses, the streamline pattern inside the cavity expands and becomes more curved, suggesting an increased influence of the convection process. These findings are consistent with the CFD analysis results, which show high accuracy in predicting Nusselt numbers. Furthermore, the comparison between daily distilled water productivity from experimental measurements and theoretical predictions shows good agreement.
Co-Authors Agus Wibowo Agus Wibowo Andriyanto, Sholikhin Budiana, Eko Prasetya Budiana Deddy Prihadi Dwi Septiyanto, Muhamad Edi Sudrajat, Subur Galuh Renggani Wilis Galuh Renggani willis Hermawan, Okky Hendra M Fajar Nurwildani Mafazi Rifqi Muhammad Agus Shidiq Mursyidah Dwi Hartati, Mursyidah Dwi Ponoharjo, Ponoharjo Putra Ramadhan, Laksana Royan Hidayat rusnoto rusnoto Soebyakto Syamsul Hadi Wijayanta, Agung Tri