Phase-change materials for indoor comfort improvement in lightweight buildings. A parametric analysis for Australian climates

Phase change materials (PCM), being able to supply dynamic thermal capacity, have ever shown great potentialities in lightweight constructions. Following a first study on the integration of PCM in lightweight solar walls, this paper aims to explore the integration of PCMs in walls and partitions, carrying out a multi-parametric study. A test room, representing a naturally conditioned typical office, has been simulated in EnergyPlus. PCM have been modelled as integrated either in indoor partitions or in external walls. The variation of parameters such as the position of the PCM layer within the component (outer or inner position), the thickness of PCM's layer and PCM's transition range have been considered. Comfort indicators, such as the frequency of thermal discomfort, have been calculated defining the most beneficial integration strategy.