Experimental assessment of a phase change material for wall building use

F. Kuznik (1) , J. Virgone (1)

1 CETHIL - Centre de Thermique de Lyon

The thermal performances of a PCM copolymer composite wallboard has been experimentally investigated in a full scale test room. The test cell is totally controlled so that a typical day can be repeated (temperature and solar radiative flux). Effects of the PCM are investigated comparing the results obtained with and without composite wallboards for three cases: a summer day, a winter day and a mid-season day. The results show that: (1) for all the cases tested, the decrement factor varies between 0.73 and 0.78 which is quite interesting for use in buildings and particularly for renovation; (2) the air temperature in the room with PCM lowers up to View the MathML source4.2°C, the comfort enhancement is more important if the surface temperatures are also considered; (3) the PCM wallboards enhance the natural convection in the room and then there is no thermal stratification contrary to the room without composite; (4) the numerical experiments are fully described and can then be used to evaluate PCM numerical modeling.

Mots clés: Phase change material; Wallboard; Energy storage; Experimental investigation; Temperature fluctuation

Domaines: Thermique [physics.class-ph]; Thermique [physics.class-ph]

F. Kuznik, J. Virgone. Experimental assessment of a phase change material for wall building use. Applied Energy, 2009, 86 (10), pp.2038-2046. ⟨10.1016/j.apenergy.2009.01.004⟩. ⟨hal-00471155⟩