Study on preparation of shape-stable phase-change materials based on cellular concrete and their performances

doi:10.3969/j.issn.2097-0706.2024.03.004

Abstract

Abstract:

To accommodate massive municipal solid wastes，and avoid environmental pollution resulting from serious waste concrete accumulation， a shape-stable phase-change material（SSPCM） taking waste cellular concrete（WCC） after pre-sintering as its skeleton material and using Na₂CO₃ as its phase-change material is proposed. The test results show that the sintered WCC loading with 45% Na₂CO₃ is of a melting latent heat of 126.7 J/g measured by a differential scanning calorimeter（DSC）. And according to the results of X-Ray diffraction（XRD） and Fourier transform infrared（FT-IR）， the chemical compatibility between the skeleton material and phase change material of the SSPCM is good. The maximum thermal conductivity of the SSPCM is 0.24 W/（m·K） measured by laser flash analysis（LFA）.

Key words: heat storage, solid waste, shape-stable phase-change material, cellular concrete, skeleton material, performance

CLC Number:

TK02

MENG Qiang, TIAN Xi, XIONG Yaxuan. Study on preparation of shape-stable phase-change materials based on cellular concrete and their performances[J]. Integrated Intelligent Energy, 2024, 46(3): 29-34.

Figures/Tables 12

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材料	特征峰值 (cm^-1)
Na₂CO₃	3 413,3 235,2 030,1 777,1 617,1 446,880
烧结WCC	3 551,3 414,3 237,2 031,1 638, 1 618,1 384,1 023,939,904
NC3	3 551,3 414,3 236,2 032,1 637, 1 617,1 438,1 384,1 031,877
NC4	3 554,3 413,3 235,2 031,1 638,1 617, 1 438,1 384,1 031,934,896
NC5	3 552,3 413,3 235,2 031,1 638, 1 617,1 449,1 385,1 031,934