Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Effect of reduced air change rates on indoor air quality and air conditioning energy consumption in retail buildings

Konstantin Finkbeiner, Martin Kremer, Martin Rätz, Xuchao Ying, Paul Mathis, Dirk Müller
RWTH Aachen University, Germany

Abstract: In this article, the effects of reduced air exchange rates (ACR) on indoor air quality (IAQ) and energy demand for air conditioning are investigated, whereby the supply temperatures of the cooling circuit were increased, additionally. When considering air quality, it was shown that the limiting factor in reducing the amount of fresh air is the concentration of volatile organic compounds (VOC). For this purpose, the limit values for comfort were compared with the VOC concentration, CO2 concentration and air humidity. With the measures of reducing the ACR and increasing the supply temperature of the cooling circuit, up to 48.2 % of the primary energy could be saved.
Keywords: shopping center, energy efficiency, indoor air quality, moist air
Pages: 3314 - 3320