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Research studies have shown improved energy efficiency with the integration of a phase change material (PCM) in the building envelope. An accurate knowledge of dynamic properties of a PCM-integrated building component is critical in establishing its energy saving potential. Differential scanning calorimetry (DSC) is a common method used to characterize PCMs. However, DSC is valid for small and homogenous specimens, rendering it inappropriate for building-scale PCM products that often contain additives. We describe the theory of a recently developed dynamic heat flow meter method (DHFMA) for testing of PCM-integrated products. To fill the lack of test data and a reliable procedure for the DHFMA method, we characterize five PCM-integrated products combining a variety of PCM types with different building elements. The useful data generated is analyzed to develop a general standard test procedure and verify the repeatability of the method.

DHFMA Method for Dynamic Thermal Property Measurement of PCM-integrated Building Materials