TY - JOUR
T1 - Cement-Based Materials with Solid-Gel Phase Change Materials for Improving Energy Efficiency of Building Envelope
AU - Liu, Zhuo
AU - Du, Jiang
AU - Steere, Ryan
AU - Schlegel, Joshua P.
AU - Khayat, Kamal H.
AU - Meng, Weina
N1 - Publisher Copyright:
© 2023 American Society of Civil Engineers.
PY - 2023/11/1
Y1 - 2023/11/1
N2 - This paper evaluated the cement-based materials incorporated with novel solid-gel phase change materials (PCMs) for improving the energy efficiency of building envelopes. This novel PCM is form-stable, which will not leak as solid-liquid PCMs do and not need encapsulation, and it features high energy-storage capacity. Experimental results showed that the thermal properties of cement-based materials were improved as the increase of PCM content. A 30% replacement of sand by volume with PCM can increase the latent heat of the mixture from around 0 to 7 J/g and decrease the thermal conductivity of PCM mortar based on the generalized self-consistent (GSC) model by about 20%. However, the workability and mechanical properties were compromised. The simulation results indicated that 30% PCM-incorporated walls can contribute to 5% energy saving for cooling in a whole year and 12% reduction in peak cooling load compared with the reference without PCM. The proposed PCM composite offers a promising avenue to achieve energy-efficient building envelopes.
AB - This paper evaluated the cement-based materials incorporated with novel solid-gel phase change materials (PCMs) for improving the energy efficiency of building envelopes. This novel PCM is form-stable, which will not leak as solid-liquid PCMs do and not need encapsulation, and it features high energy-storage capacity. Experimental results showed that the thermal properties of cement-based materials were improved as the increase of PCM content. A 30% replacement of sand by volume with PCM can increase the latent heat of the mixture from around 0 to 7 J/g and decrease the thermal conductivity of PCM mortar based on the generalized self-consistent (GSC) model by about 20%. However, the workability and mechanical properties were compromised. The simulation results indicated that 30% PCM-incorporated walls can contribute to 5% energy saving for cooling in a whole year and 12% reduction in peak cooling load compared with the reference without PCM. The proposed PCM composite offers a promising avenue to achieve energy-efficient building envelopes.
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U2 - 10.1061/JMCEE7.MTENG-15925
DO - 10.1061/JMCEE7.MTENG-15925
M3 - Article
AN - SCOPUS:85171163041
SN - 0899-1561
VL - 35
JO - Journal of Materials in Civil Engineering
JF - Journal of Materials in Civil Engineering
IS - 11
M1 - 04023425
ER -