Development of A Calibration Chamber To Evaluate The Performance of A Low-Cost Iaq Sensing Device

Indoor air quality is considered pivotal for ensuring the comfort and health of building environments. However, challenges persist in achieving optimal efficiency, particularly in instrument accuracy, and reliability for indoor air quality monitoring. In contemporary environmental monitoring, the reliability of low-cost sensors is often of questionable quality, and the sensors need to be evaluated individually. This project seeks to design and construct a calibration chamber that can be used for evaluation of low-cost sensor devices under controlled conditions, with specific attention to air pollutant concentrations. Key components of the chamber include airtight construction, insulation, sealing mechanisms, and provisions for sensor mounting. The novelty of the proposed calibration chamber lies within the construction technique and the opportunity for multi-CFD simulation. The double-skin structure of the calibration chamber consists of an outer square box and an inner square shape with beveled corners to ensure a well-mixed indoor environment.