Numerical and Experimental Modeling of Indoor Air Quality Inside a Conditioned Space with Mechanical Ventilation and DX-Air Conditioner

Authors

• Wisam Mareed, University of Technology, Mechanical engineering, Baghdad, Iraq,Follow
• Hasanen Hussen, University of technology, Mechanical engineering, Baghdad, Iraq,Follow

Keywords

Carbon dioxide (CO2), Computational fluid dynamics CFD, Indoor air quality (IAQ), 4-way cassette air-conditioner, ventilation

Document Type

Research Paper

Abstract

Elevated CO2 rates in a building affect the health of the occupant. This paper deals with an experimental and numerical analysis conducted in a full-scale test room located in the Department of Mechanical Engineering at the University of Technology. The experiments and CFD were conducted for analyzing ventilation performance. It is a study on the effect of the discharge airflow rate of the ceiling type air-conditioner on ventilation performance in the lecture room with the mixing ventilation. Most obtained findings show that database and questionnaires analyzed prefer heights between 0.2 m to 1.2 m in the middle of an occupied zone and breathing zone height of between 0.75 m to 1.8 given in the literature surveyed. It is noticed the mismatch of internal conditions with thermal comfort, and indoor air quality recommended by [ASHRAE Standard 62, ANSI / ASHRAE Standard 55-2010]. CFD simulations have been carried to provide insights on the indoor air quality and comfort conditions throughout the classroom. Particle concentrations, thermal conditions, and modified ventilation system solutions are reported.

Recommended Citation

Mareed, Wisam and Hussen, Hasanen (2026) "Numerical and Experimental Modeling of Indoor Air Quality Inside a Conditioned Space with Mechanical Ventilation and DX-Air Conditioner," Engineering and Technology Journal: Vol. 38: Iss. 9, Article 2.
DOI: https://doi.org/10.30684/etj.v38i9A.875

DOI

10.30684/etj.v38i9A.875

First Page

1257

Last Page

1275