Fahsai Mini
Created By RISC | 2 weeks ago
Last modified date : 2 weeks ago
At the beginning of the year, you may have woken up to see a blanket of white mist covering the surroundings. Checking an air quality application or measurement device, you’d have found the haze was hazardous air pollution, with PM2.5 levels soaring to alarming heights.
Air pollution has become an increasingly severe issue this year, appearing to last longer and posing greater risks to public health. Do we have to live with this pollution forever?
RISC remains committed to developing innovations for better living. Since 2020, RISC has been continuously improving the "Fahsai" air purification towers to combat PM2.5 pollution in Thailand. The project began with Fahsai 1, followed by Fahsai 2 and Fresh One, with installations in key locations such as True Digital Park, where PM2.5 levels were reduced by 50%, and the University of Phayao, which saw a 40% reduction. These purification towers create "safe zones" with cleaner outdoor air.
RISC continues to enhance its air purification technology, leading to the development of the latest model, the hybrid automatic air purification tower "Fahsai Mini." This version is designed for easy mobility and installation while improving efficiency. It can purify up to 60,000 cubic meters of air per hour with an effective purification radius of up to 50 meters—equivalent to the air-purifying capacity of 700 trees (based on laboratory test results). Additionally, it can eliminate bacteria, fungi, and viruses.
Proven Effectiveness of Fahsai Mini
In mid-January, PM2.5 levels surged. The Fahsai Mini demonstrated its efficiency in reducing pollution compared to nearby areas without air purification towers. The latest air quality measurements recorded on 31 January 2025, at 08:30 AM showed the following data:
📌 PM2.5 levels from AirVisual: 147 µg/m³ (08:00–09:00 average)
📌 PM2.5 levels from on-site measurement tools: 152 µg/m³
📌 PM2.5 levels near the Fahsai Mini tower: reduced to 63 µg/m³
These results indicate that the Fahsai Mini significantly improves air quality by reducing PM2.5 levels by up to 60%, helping to mitigate health risks for people in the affected areas.
Introducing the Fahsai Mini
The Fahsai Mini applies the Venturi Scrubber system, commonly used for industrial air pollution control, adapted into a hybrid automatic air purification tower. This innovation aligns with health and environmental sustainability goals while enhancing overall well-being.
Fahsai Mini is more compact than its predecessors, making it easier to transport and install. However, it retains comparable air purification efficiency, PM2.5 filtration capacity, and pathogen elimination capabilities. Compact size: 3.2 meters in height, 1.35 meters wide at the base. High airflow capacity: Two intake fans at 30,000 m³/h each (total 60,000 m³/h). Wide coverage area: The air output fan also operates at 60,000 m³/h, capable of covering an area equivalent to a football field per hour.
The Fahsai Mini starts by drawing in air from its side panels using high-powered fans. The air enters a cylindrical chamber, where it passes through dual high-speed water spray nozzles that create a cyclonic pattern, effectively capturing airborne pollutants. Uses a multi-layer filtration system with a specialized structure to enhance water surface tension, allowing for more effective dust capture. Filters out particles as small as 0.3 microns, smaller than PM2.5 and PM10. Uses UVGI technology to eliminate bacteria and viruses before releasing clean air. Equipped with hybrid power technology, consuming 600–3,000 watts per hour depending on pollution levels. Uses only 50 liters of water per day, with a partial water recycling system incorporating ozone and filtration technology for water purification.
RISC has developed multiple air purification models tailored for different environments. Learn more about previous versions:
Fahsai 1: https://web.facebook.com/riscwellbeing/videos/494956578093907/
Fahsai 2: https://web.facebook.com/riscwellbeing/posts/2746237258972773
Fresh One: https://web.facebook.com/riscwellbeing/posts/2494077847522050
For inquiries or further details about the Fahsai project, please contact:
Mr. Nisit Wichaisakul (D Supreme Co., Ltd.)
Tel: 061-789-2687
Email: nisit_wi@dtgo.com
Story by Napol Kieatkongmanee, Senior Sustainable Designer and TREES-A, Building Technology, Intelligent Systems, Innovative Solutions Specialist, RISC