Heat loss to air change
In May and June 2019 four short articles on this blog discussed heat loss from buildings through air changes, air quality in buildings, and methods of measuring rates of air change. “ A Change of Air” noted that an appreciable proportion of the total energy supplied to a building may be lost through excessive air change rates and outlined methods of measuring the rates through pressure testing, energy balance calculation, and CO2 decay. “Indoor air quality” described the main groups of pollutants which affect indoor air quality, and “CO2 in the Home” discussed indoor CO2 levels, how they might affect the health of occupants, and their measurement. CO2 decay methods and their limitations were discussed in more detail in “Measuring Air Change Rates by CO2 Decay”. More recent work will be outlined below, referencing papers published from 2021 to 2024. Nazaroff (2021) presented a review of field studies that measured residential air-change rates. These were mainly in north America, no