%0 Journal Article
%9 Article
%W National Agricultural Library
%~ PubAg
%B Applied energy
%T Paraffin/diatomite composite phase change material incorporated cement-based composite for thermal energy storage
%A Xu, Biwan
%A Li, Zongjin
%V 2013 v.105
%K Fourier transform infrared spectroscopy
%K cement
%K diatomaceous earth
%K differential scanning calorimetry
%K drying
%K energy
%K heat
%K melting point
%K scanning electron microscopes
%K scanning electron microscopy
%K shrinkage
%K specific heat
%K thermal conductivity
%K thermal stability
%K thermogravimetry
%M 850011
%X In this study, thermal energy storage cement-based composite (TESC) was developed by incorporating paraffin/diatomite (DP) composite phase change material (PCM). Paraffin/DP composite PCM was firstly fabricated at mix proportion (paraffin: DP) of 0.9:1.0. Scanning electron microscope (SEM) and Fourier transform infrared (FT-IR) results show that paraffin can be well impregnated into DP pores and has good compatibility with it. Differential scanning calorimetry (DSC) results reveal that paraffin/DP composite PCM has melting temperature and latent heat of 41.11°C and 70.51J/g, respectively. Good thermal stability is observed for this fabricated composite PCM by using thermogravimetric analysis (TGA) method. Furthermore, paraffin/DP composite PCM was incorporated in cement-based composite at 10%, 15%, 20% and 30%, by weight of cement. It is found that in comparison with control normal cement-based composite, maximum reductions on 28-day compressive strength and flexural strength, drying shrinkage strain and thermal conductivity by incorporation of paraffin/DP composite PCM are 48.7%, 47.5%, 80.7% and 33.6%, respectively. Good thermal energy storage performance of TESC is clearly suggested by results of specific heat capacity test and heating test.
%D 2013
%= 2017-02-22
%G
%8 2013-05
%V v. 105
%P pp. 229-237
%R 10.1016/j.apenergy.2013.01.005