Indoor Environmental Quality Assessment in a Newly Renovated Office Building in Delhi City

Healthy indoor environmental quality in the offices is a key factor for good health and productive work output. The ventilation facilities, construction materials and design of the buildings are the key factors to influence the indoor environmental quality, i.e., thermal comfort and pollutant concentrations. The present study attempted to evaluate the indoor environmental quality of a newly renovated office building in Naraina Industrial area using sensor based monitors. The study measured PM2.5, relative humidity and temperature in different indoor micro-environments of the building including canteen area. The monitoring is carried out in indoor as well as outdoor environment using real time sensors based affordable monitor during one week period in September, 2022. The data analysis includes pollutant concentrations with and without operation of the ventilation system, indoor/outdoor ratio of pollutants, indoor air quality during working and non-working hours etc. The study also emphasized on the emission of pollutants due to cooking practices in the canteen area. The findings of the study highlight the effect of ventilation rate in the office building, office and canteen activities and infiltration of outdoor pollution.