International Journal of Applied Technology Research
Vol 4 No 2 (2023): October 2023

Numerical Study of Thermal Comfort Evaluation in Naturally Ventilated Classrooms

Bowo Yuli Prasetyo (Department of Refrigeration and Air Conditioning Engineering)
Rizki Muliawan (Department of Refrigeration and Air Conditioning Engineering)
Andini Luthfiyyah Afifah (Department of Refrigeration and Air Conditioning Engineering)
Fujen Wang (Department of Refrigeration, Air Conditioning, and Energy Engineering, National Chin-YiUniversity of Technology, Taichung 41170, Taiwan)

Article Info

Publish Date
30 Sep 2023

Abstract

The classroom is one of the important facilities in teaching and learning activities. Just like any other room, ensuring thermal comfort becomes a vital aspect for its occupants. This study aims to evaluate environmental conditions and the thermal comfort experienced by classroom occupants through numerical methods. The evaluation involves the integration of the Predicted Mean Vote (PMV) and Predicted Percentage of Dissatisfied (PPD) equations into Computational Fluid Dynamics (CFD) simulations using a user-defined function. Furthermore, extensive field measurements and questionnaire surveys are also employed to support the simulation process. The results indicate that the air temperature tends to be high, reaching 30.91°C. Meanwhile, the air velocity within the room, particularly in the occupied areas, is significantly low, with an average value of 0.04 m/s. According to the ASHRAE Standard 55, the classroom is perceived as uncomfortable, as evidenced by a PMV value of 1.38 and a PPD of 44.94%. Therefore, efforts are required to enhance the thermal comfort in the space.

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Journal Info
International Journal of Applied Technology Research
Website

Abbrev

ijatr

Publisher

Politeknik Negeri Bandung

Subject

Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

Description

This journal is intended to foster and stimulate the exchange of discourses on applied technology research issues among professionals and academics throughout the world. IJATR welcomes articles in all areas of engineering and technology research, both applied and theoretical. In case of theoretical ...