Experimental validation of a methodology to assess PCM effectiveness in cooling building envelopes passively
MetadataShow full item record
Energy consumption presents increasing trends during last decades, presenting a great challenge. The building sector contributes to a high proportion of the energy consumed and therefore efforts should be focused to improve energy efficiency of buildings. For such purpose, the use of phase change materials in building envelopes has been extensively studied and its benefits were demonstrated. However, there is a lack of simple evaluation tools to assess these benefits. In this paper a previously proposed methodology based on four indicators, which were tested through simulation only are experimentally validated using brick, concrete and timber constructions, incorporating PCM. Results show that the methodology is successful for buildings with heat gains and having low thermal inertia or insulation. However, for highly insulated buildings with significant inertia and low heat gains the method fails to assess the potential benefit of the PCM. Moreover, the ITD indicator is found to be the most accurate in assessing PCM benefits compared to other parameters studied. In this paper the ITD indicator will be modified to take into account an upper and lower comfort temperature levels rather than single set temperature.
Is part ofEnergy and Buildings, 2014, vol. 81, p. 59-71
European research projects
Showing items related by title, author, creator and subject.
Energy savings due to the use of PCM for relocatable lightweight buildings passive heating and cooling in different weather conditions Marin, Paula; Saffari Tabalvandani, Mohammad; Gracia Cuesta, Alvaro de; Zhu, Xibingyan; Farid, Mohammed M.; Cabeza, Luisa F.; Ushak, Svetlana (Elsevier, 2016)Relocatable, transportable or off-site constructed lightweight buildings typically undergo sharp indoor temperature fluctuations in the heating and cooling seasons due to the lack of sufficient thermal mass in their ...
Oró Prim, Eduard; Gracia Cuesta, Alvaro de; Castell, Albert; Farid, Mohammed M.; Cabeza, Luisa F. (Elsevier, 2012)Thermal energy storage (TES) is a technology with a high potential for different thermal applications. It is well known that TES could be the most appropriate way and method to correct the gap between the demand and ...
Navarro Farré, Lidia; Gracia Cuesta, Alvaro de; Solé Cutrona, Cristian; Castell, Albert; Cabeza, Luisa F. (Elsevier, 2012)Nowadays, European policies are promoting low energy buildings because of the high amount of energy consumption of the building sector. Phase change materials (PCM) have been studied in building implementation as a ...