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All Journal Jurnal Engine: Energi, Manufaktur, dan Material Jurnal Pendidikan Teknik Mesin Undiksha
Rifky Irfani
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Automotive Engineering Control & Systems Engineering Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Rancang Bangun Sistem Exhaust Fan Otomatis Berbasis Sensor DHT11 dan Mikrokontroler ESP32 untuk Peningkatan Kualitas Udara di Smoking Area Rifky Irfani; Achmad Aziz Rahmanto; Muhammad Edgar Gazazanata
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 9 No. 1 (2025)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v9i1.2161

Abstract

Air pollution in smoking areas can significantly impact human health and reduce indoor air quality. Poor ventilation systems often fail to respond to real-time environmental changes, leading to increased exposure to harmful particles. This research develops an automatic exhaust fan system utilizing a DHT11 sensor and an ESP32 microcontroller to optimize air circulation. The system activates when the temperature exceeds 27°C or humidity surpasses 60%, ensuring effective ventilation control. The study employs a prototyping approach consisting of system design, hardware and software implementation, and performance testing. Results indicate a 20% reduction in energy consumption compared to manual operation, highlighting the system's efficiency. The DHT11 sensor records a temperature deviation of ±0.5°C and a humidity accuracy of ±2%, confirming its reliability. This system not only improves air quality but also supports energy efficiency, making it a viable solution for enclosed smoking areas in public spaces.  
Simulasi Rangka Gudang Terhadap Pembebanan Hoist Crane Double Grider 2 Ton Divisi GSCM PT. Xx: Warehouse Frame Simulation Against Double Grider 2 Ton Hoist Crane Loading GSCM Division PT. Xx Muhammad Edgar Gazanata; Rudiat; Rifky Irfani
Jurnal Pendidikan Teknik Mesin Undiksha Vol. 13 No. 2 (2025)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jptm.v13i2.92901

Abstract

This study aims to analyze the permissible deflection limits of the warehouse frame structure in the GSCM Division of PT. Xx The analysis was carried out using Autodesk Inventor Professional 2024 to simulate the effect of a 2-ton double girder lifting crane load on a steel structure made of ASTM A36 material. Observations, measurements, literature studies, and interviews were conducted to collect the necessary data. The simulation results showed that the maximum deflection of the building structure was 1.71 mm, exceeding the permissible deflection of 0.599 mm according to SNI 1729:2015. Likewise, the maximum deflection of the lifting crane girder reached 65.68 mm, exceeding the permissible limit of 36.78 mm. These findings indicate that the warehouse frame structure in its current condition does not meet the safety standards for the installation of hoist cranes. The deflection that occurs risks reducing structural stability and causing operational failure. Therefore, additional reinforcement and modification of the frame design are needed to be able to support the crane load optimally and safely. The results of this study are expected to be a reference in developing industrial warehouse structure designs that are more efficient and in accordance with safety standards.
Co-Authors Achmad Aziz Rahmanto Muhammad Edgar Gazanata Muhammad Edgar Gazazanata Rudiat