Advancements and challenges in enhancing salt hydrate phase change materials for building energy storage: Optimization methodologies and mechanisms

Special Topic: Energy Systems of Low Carbon Buildings

Open Access

Review

Table 6

Summary of porous carriers for various salt hydrate PCMs ^a

Type of PCMs	Porous aggregate	Latent heat capacity (J/g)		Note	Reference
Type of PCMs	Porous aggregate	Original	After cycling	Note	Reference
CaCl₂·6H₂O/SrCl₂·6H₂O (98:2)	Expanded perlite (55% loading capacity)	87.44	76.46 (1000 cycles)	−5 to 50°C	[78]
Na₂CO₄·10H₂O/Na₂HPO₄·12H₂O (5:5)	Expanded perlite (70% loading capacity)	151.73	91.99 (1000 cycles)	−20 to 60°C	[79]
Na₂SO₄·10H₂O/Na₂CO₄·10H₂O (5:5)	Expanded vermiculite (60% loading capacity)	110.3	100.1 (100 cycles)	−10 to 50°C	[81]
CH₃COONa·3H₂O/ Na₂B₄O₇·10H₂O (100:2)	Expanded vermiculite (86% loading capacity)	238.8	233.8 (150 cycles)	Unclarified	[82]
Na₂HPO₄·12H₂O/Na₂CO₄·10H₂O (58:42)	Diatomite (58% loading capacity)	106.3	100.3 (300 cycles)	1.10 to 50°C	[83]
CH₃COONa·3H₂O	Diatomite (66% loading capacity)	162.5	159.6 (100 cycles)	20 to 65°C	[84]

a: Loading capacity denotes the ratio between the latent heat of raw salt hydrate PCMs and the latent heat of porous carrriers containing PCMs.

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