Conference Proceedings

Comparing mixing ventilation and displacement ventilation in university classrooms

J Zhou, H-W Chau, Y Kang, D Hes, M Noguchi, L Aye

Proceedings of Zero Energy Mass Custom Home 2018 | ZEMCH Network | Published : 2018

Abstract

There are two main types of mechanical ventilation systems: the mixing ventilation (MV) and the displacement ventilation (DV). The aim of this work is to compare their performance in terms of ventilation efficiency, air temperature, relative humidity, size-resolved particle concentrations, carbon dioxide (CO2) concentrations, and energy consumption. We performed a field investigation in two side-by-side classrooms installed with the two different ventilation systems. The energy consumptions were measured by i) a heat meter to measure the energy extracted by chilled water supplied, and ii) a power analyser to measure energy consumed by the ventilation fan. We also monitor indoor air dry bulb ..

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