Mould Risk on Wall Surface in Partly Underground Technical Room

Abstract

This conference article aims at the indoor climate in the technical room of an underground water reservoir. This indoor climate is specific by high relative humidity (average 75.2% r.h.) and low air temperature (average 13.6 °C). Therefore, this research study focuses on surface condensation and mould risk on the partly underground wall in the technical room. The experimental research combines long-term monitoring (22 months). Long-term of indoor climate and thermal numerical simulation. The experimental measurement shows condensation risk on the indoor wall surface, and the unsteady 2D numerical simulation in software Calculation Area 4.0e shows temperature fluctuation on indoor wall surfaces. Finally, the empirical VVT model predicts mould risk on the indoor wall surface for the over-terrain part in autumn and summer for the under-terrain part.