A study on evaluation of indoor air quality at residential houses in Hanoi (Viet Nam)

Indoor air quality significantly impacts human health and is a major contributor to respiratory and cardiovascular diseases.This study aimed to assess and analyze indoor pollution by measuring environmental parameters inside homes in Hanoi, the capital city of Vietnam, in conjunction with homeowner surveys.The findings indicate that indoor air quality is influenced by the flow and quality of the clean air supply and is further compromised by pollutants generated from human activities.Key pollutants identified include fine particulate matter (PM2.5),carbon dioxide (CO2), total volatile organic compounds (TVOC), and mold, which tend to accumulate in high concentrations within indoor environments, leading to air quality degradation.Based on the results, heat recovery ventilation (HRV) is recommended to use for improving indoor air quality and occupant comfort as well as significantly reducing the energy consumption of air conditioning systems during the summer months.