Thermal energy savings in buildings with PCM-enhanced envelope: Influence of occupancy pattern and ventilation

• Published in: Energy and buildings 2011, Vol.43 (1), p.101-107
• Main Author: Diaconu, Bogdan M.
• Format: Article
• Language: English
• Subjects: Applied sciences; Building envelopes; Building materials; Building technical equipments; Buildings; Buildings. Public works; Computation methods. Tables. Charts; Energy conservation; Energy management and energy conservation in building; Energy savings; Environmental engineering; Exact sciences and technology; External envelopes; Heat exchange; Indoor environments; Latent heat storage; Occupancy pattern; Phase change materials; Structural analysis. Stresses; Ventilation; Wall. Partition; Walls
• ISSN: 0378-7788
• DOI: 10.1016/j.enbuild.2010.08.019

▶ Buildings with PCM enhanced envelope provide potential for thermal energy savings. ▶ Thermal energy savings potential depends on ventilation and occupancy patterns. ▶ Proper design of PCM-enhanced envelope must consider ventilation and occupancy patterns. Integration of building materials incorporating PCMs into the building envelope can result in increased efficiency of the built environment. A PCM-enhanced wall system is proposed in this paper and a simplified model for the heat exchange between the indoor environment and ambient was developed. The objective of the study was to assess the effect of occupancy pattern and ventilation on the energy savings potential of the wall system. It was found that (1) the occupancy pattern influences the value of the PCM melting point for which maximum energy savings value was reached and (2) the ventilation and its pattern reduces the relative value of the energy savings.