Zero Emission Building Envelopes - Numerical Simulations of a Well-Insulated Building with Phase Change Material Panels Integrated in the Floor

In this paper, numerical building energy simulations were carried out with weather data for Karasjok, Stuttgart and Seville, to evaluate the energy saving potential of a floor with integrated PCM panels.
The reference case was a lightweight wood frame floor construction. The effect of adding different thicknesses of PCM, concrete and wood was investigated. The main conclusions are:
• There is a significant energy saving potential by adding thermal mass in the warmer climates in Stuttgart and Seville.
• PCM has generally the best energy saving potential, but the advantage of using PCM is decreasing when the thickness is increasing.