Investigation Of Air Flow In Chamber Using Air-Conditioning Unit For Thermal Comfort

Teo, Yin Yin (2009) Investigation Of Air Flow In Chamber Using Air-Conditioning Unit For Thermal Comfort. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Control of relative humidity is an essential aspect of maintaining indoor air quality in an air-conditioned. The aim of using air-conditioning is to provide thermal comfort and control the quality of air. Humans feel comfort when air temperature is between 220C to 270C with the relative humidity of 40% to 60% when the air speed is about 0.25 m/s. This project focuses on both temperature and humidity control of air in order to achieve thermal comfort zone. The experiments were based on the acceptable thermal comfort conditions in a chamber by referring to the ASHRAE standard and the thermal comfort standard from Building Regulations of Singapore. Experiments were conducted using Air-Conditioning Unit. Several parameters has considered in this study are air velocity, Pre-heater, and damper. The results reveal that the suitable setting is achieved at 2.75 m/s air velocity with 100% fresh air intake at the condition of operates a Pre-heater. In addition to the above work, Computational Fluid Dynamics with using ANSYS CFX software is used to investigate the air flow pattern and the temperature distribution in chamber. Simulation results is validated the experimental data.

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