Effects of filter motor speed and air suction fan speed on dust reduction efficiency using a solar-powered air purifier

Abstract

Air pollution is a major problem affecting public health in many areas. Therefore, the development of efficient and sustainable air purifiers is an important approach to reduce such impacts. This research developed a solar-powered air purifier that uses a wet cloth as a filter to capture small dust particles. The objective was to study the effects of filter motor speed and air suction fan speed on the dust reduction efficiency of the air purifier, using a factorial experimental design to analyze the main factors and their interactions. The independent variables were the speeds of the filter motor and the air suction fan, tested at 50%, 75%, and 100%, while the dependent variable was the percentage of dust reduction. The experimental results showed that a higher fan speed increased the air flow rate, causing more dust to be drawn into the system, while the filter motor speed helped reduce dust accumulation on the filter. Optimal speed settings significantly reduced clogging and improved dust filtration efficiency. In addition, the analysis of the main factors and their interactions revealed that the relationship between the two factors significantly affected the efficiency of the air purifier. The optimal settings from the experiment were a filter motor speed of 75% and an air suction fan speed of 75%, which yielded the highest efficiency in reducing dust particles. This study can serve as a guideline for designing and improving air filtration systems to be more efficient by holistically considering the factors affecting the system.