A review of smart ventilation energy and IAQ performance in residential buildings

TitleA review of smart ventilation energy and IAQ performance in residential buildings
Publication TypeConference Paper
Year of Publication2019
AuthorsGuyot, Gaelle, Max Sherman, Iain S Walker
Conference Name39th AIVC Conference
KeywordsDemand-controlled ventilation, indoor air quality, performance, residential buildings, review, ventilation

In order to better address energy and indoor air quality issues, ventilation needs to become smarter. A key smart ventilation concept is to use controls to ventilate more at times it provides either an energy or IAQ advantage (or both) and less when it provides a disadvantage. This would be done in a manner that provides improved home energy and IAQ performance, relative to a “dumb” base case. A favorable context exists in many countries to develop smart ventilation strategies. As a result, DCV systems are largely and easily available on the market, with more than 20-30 DCV systems approved and available in countries such as Belgium, France and the Netherlands. This paper proposes a literature review on smart ventilation used in residential buildings, developing the energy and indoor air quality performances. Analysis of 38 studies with various smart ventilation systems based on CO2-, humidity-, combined CO2- and TVOC-, occupancy-, outdoor temperaturecontrolled ventilation and smart ventilation strategies, shows that ventilation energy savings up to 60% could be obtained without compromising, and sometimes improving, IAQ. But that sometimes worst performances were obtained with an order of magnitude of energy savings between -26% and +60%.

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