RESEARCH OF AIR EXCHANGE IN THE APARTMENT ON THE BASIS OF EXPERIMENTAL DETERMINATION OF CO2 MASS TRANSFER

Abstract

Studying the frequency of air exchange in residential buildings is important from the point of view of ensuring microclimate conditions in the room for residents, as well as ensuring an appropriate level of energy efficiency. The purpose of this study is to experimentally study the concentration of CO2 in a typical apartment using stationary CO2 sensors and determine air exchange based on mass balances. The object of the study is a one-room apartment in a family-type dormitory in the city of Kyiv. The dormitory has ducted natural ventilation. As part of the study, actual and experimental measurements of the concentration of carbon dioxide were carried out in the premises of the living room, kitchen, corridor of the apartment and in the ventilation duct leading to the kitchen. Experimental research conditions were created by artificial injection of carbon dioxide. According to the research results, the air exchange rate in the apartment was at the level of 0.74 h-1 for the living room, 0.66-0.81 h-1 for the corridor, 3.4 h-1 for the kitchen, under conditions when the supply air enters through windows and entrance doors. The results of the research can be used to develop energy-efficient strategies for improving air quality in residential premises.