Ventilation: Thermal Efficiency and Health Aspects

This chapter will focus on the performance of ventilation, both in reducing adverse effects of indoor air on building occupants and in reducing the energy required for this. The first section of the chapter elaborates on the adverse effects stemming from airborne pollution: why do we need fresh air? The next section than explores the specific merits and limitations of ventilation as a strategy to renew air, while the last section focuses on the different ventilation concepts and their performance. The main focus in that section is on technologies that allow to reduce ventilation heat loss without increasing the exposure of occupants to airborne pollutants, more specifically air-to-air heat exchangers, exhaust air heat pumps (EAHP) and demand-controlled ventilation.

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