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All Journal Jurnal IPTEK Jurnal Teknik Informatika UNIKA Santo Thomas Journal of Innovation Information Technology and Application (JINITA) Jurnal Teknik Informatika Unika Santo Thomas (JTIUST) International Journal of Innovation in Mechanical Engineering and Advanced Materials Electrician : Jurnal Rekayasa dan Teknologi Elektro TeknoKreatif: Jurnal Pengabdian kepada Masyarakat
Drantantiyas, Nike Dwi Grevika
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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Journal : Jurnal IPTEK

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Thermal Analysis of Greenhouse Environment Using Computational Fluid Dynamics (CFD), Case Study in ITERA Drantantiyas, Nike Dwi Grevika; Ramli, Asyarf Nur; Suaif, ahmad; Yehezkiel, Listra Ginting
Jurnal IPTEK Vol 28, No 2 (2024): December
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2024.v28i2.6808

Abstract

Greenhouse is a modern agricultural technology that allows for increased agricultural yields. The purpose of this study was to analyze the thermal distribution in the greenhouse of the Sumatra Institute of Technology (ITERA) in 3 time conditions, namely in the morning, afternoon and evening. The method used is CFD modeling using Solidwork. The dimensions of the greenhouse are 12.5 x 25 x 4.26 m³. The greenhouse is divided into a grid into 20 thermal measurement points separated by 2.5 m. The greenhouse has 2 cooling pads and 2 exhaust fans separated by 12.5 m. Model validation using MAPE and R2. The results of the analysis show that 3 models have valid results with MAPE 10% and R2 0.75 and can continue in the review of thermal distribution. of the 3 time condition models that provide a thermal distribution of 28 - 37 ℃. Morning conditions are hotter than afternoon and evening. Cold air from the cooling pad sucked by the exhaust fan is only able to control an area 50%. So the thermal distribution of the greenhouse needs improvement.
Computational Fluid Dynamics-Based Performance Evaluation of an Air Cooler for University Classroom Conditioning: A Case Study of Classroom E304, ITERA Ningsih, Titis Pajar; Drantantiyas, Nike Dwi Grevika; Khasanah, Rizky Anisatul; Bagaskara, Muhammad Fadli; Situmorang, Zefanya Frandita
Jurnal IPTEK Vol 29, No 2 (2025): December
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i2.8439

Abstract

The advancement of cooling technologies aims to enhance indoor comfort, but conventional air conditioners (AC) raise sustainability concerns due to high energy consumption. This study evaluated the performance of an air cooler in classroom E304, characterized by high occupancy and initial temperatures of 28–30°C with 55–57% relative humidity, exceeding comfort limits per SNI 03-6572-2001. After installing a single air cooler, CFD simulations indicated a temperature reduction to 22.50–23.08°C and relative humidity of 54.89–62.34%, within the comfort range. Model validation demonstrated high accuracy, with RMSE below 1°C and MAPE below 3%, confirming the simulation’s reliability for classroom cooling design. The results demonstrate that air coolers provide an effective and energy-efficient solution for tropical classrooms.
CFD Analysis of Thermal Distribution and Airflow in a Confined Classroom: RoomE303, Sumatera Institute of Technology Khasanah, Rizki Anisatul; Drantantiyas, Nike Dwi Grevika; Ningsih, Titis Pajar; Situmorang, Zefanya Frandita; Bagaskara, Muhammad Fadli
Jurnal IPTEK Vol 29, No 2 (2025): December
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2025.v29i2.8537

Abstract

This study evaluates the thermal comfort of Classroom E303 at the Sumatera Institute of Technology, a west-facing room exposed to high solar heat in a tropical climate. Air temperature and relative humidity were measured at 16 points under unoccupied conditions and used as boundary inputs for computational fluid dynamics (CFD) simulations developed with SketchUp and SolidWorks. Model validation using mean absolute percentage error (MAPE) and root mean square error (RMSE) showed good accuracy at 4.41% and 1.06 °C. Baseline analysis indicates that the thermal conditions approach the upper limit of the SNI 03-6572-2001 comfort standard, reflecting a warm indoor environment. A mist-based evaporative cooling scenario reduced temperature by 2.7 °C and increased relative humidity by 16%RH, demonstrating its potential to enhance comfort. The findings confirm that CFD is an effective tool for predicting indoor thermal performance and supporting passive, energy-efficient strategies in tropical educational buildings.
Co-Authors Andika Setiawan, Andika Anggraini, Leslie Aprilianda, Mohamad Meazza Bagaskara, Muhammad Fadli Bagaskara, Radhinka Ba’its, Alfian Kafilah Faisal, Amir Febrianto, Andre Ferizandi Qauzar Gani Fitrawan, Mhd. Kadar Gani, Ferizandi Qausar Harahap, Al Barra Harmiansyah Ilham Marvie Khasanah, Rizki Anisatul Khasanah, Rizky Anisatul Khourinisa, Vera Listiani, Amalia Malau, Nadia Sri Melati Nadi, Muhammad Abi Berkah Ningsih, Titis Pajar Noveliska Br Sembiring, Noveliska Br Pratama, Borneo Satria Ramli, Asyarf Nur Sasmita, Ismoyo Aji Septia Eka Marsha Putra Situmorang, Zefanya Frandita Suaif, ahmad Untoro, Meida Cahyo Yehezkiel, Listra Ginting Yulita, Winda