Preprint Technical Note Version 1 Preserved in Portico This version is not peer-reviewed

Low-cost Air Purifier Prototype using a Ventilating Fan and Pump against COVID-19 and Haze Pollution

Version 1 : Received: 30 March 2021 / Approved: 1 April 2021 / Online: 1 April 2021 (13:43:51 CEST)

A peer-reviewed article of this Preprint also exists.

Jumlongkul, A. Low-Cost Air Purifier Prototype Using a Ventilating Fan and Pump Against Haze Pollution. Aerosol Science and Engineering, 2022, 6, 391–399. Jumlongkul, A. Low-Cost Air Purifier Prototype Using a Ventilating Fan and Pump Against Haze Pollution. Aerosol Science and Engineering, 2022, 6, 391–399.


Purpose: This study aimed to focus on the design and development of low-cost DIY air purifiers, using a ventilating fan, air pump, water pump, and an ultrasonic generator, with regard to filtration efficacy and also cost-effectiveness that can be used during the COVID-19 pandemic and haze pollution. Methods: Six types of household air purifiers, incorporating a HEPA filter, a HEPA filter & electrostatic fiber, an air pump, an air pump & ultrasonic wave, a water pump, and a water pump & ultrasonic wave, were fabricated. The amount of particulate matter (PM) and CO2 levels were recorded at 0, 10, 20, 30, and 60 min, then, repeated 3 times. After 10 min of the 3rd experiment of each study, the last measurement of air pollution would be recorded. Results: At 60 min, the HEPA filter & electrostatic fiber showed the best performance regarding reduction of PM and CO2 levels. The highest PM reduction rate had occurred at 30 min using an air pump procedure (99.330 to 100%). The CO2 levels of all experiments had fluctuated at different times. After 10 min of a closed machine, HEPA filter & electrostatic fiber revealed the highest rate of PM elevation, while PM levels of all water-based purifier systems were decreased. A water pump and air pump were the cheapest air cleaners, when taking into account maintenance expenses and electricity charges. Conclusion: An air pump is the optimum method for reducing particulate matter at minimum cost but without the benefit of reduced humidity, while the HEPA filter & electrostatic fiber is the best system to decrease PM levels, but this requires an enclosed structure at the inlet to prevent dust coming back into the room. As filtration efficiency is increased by the use of filters & electrostatic fiber mechanisms, the more expensive the system becomes.


air filtration; air purifier; COVID-19; haze; HEPA filter; particulate matter


Engineering, Automotive Engineering

Comments (1)

Comment 1
Received: 23 August 2022
Commenter: (Click to see Publons profile: )
The commenter has declared there is no conflict of interests.
Comment: An air purifier is very useful in protecting covid 19. It's important to lead a healthy life. They are the best way to keep your house free from dust, and viruses. and bacteria. Now, a days air pollution has increased a lot. to keep ourselves safe we must use purifiers. An air purifier will increase the air quality of your home and keep your family safe and healthy.
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