Design of Eutectic Hydrated Salt Composite Phase Change Material with Cement for Thermal Energy Regulation of Buildings

Wu, Niuniu; Liu, Lijie; Yang, Zhiwei; Wu, Yunyi; Li, Jinhong

doi:10.3390/ma14010139

Cited by 10 publications

(5 citation statements)

References 38 publications

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“…Alternatively, they demonstrated that modifying EG with an organic surfactant (trtonX-100) could also create hydrophilic surfaces, which are critical to achieve a large adsorption capacity of hydrated salts. They found that 1:10 was an optimum mass ratio of TriotonX-100 to EG for achieving the highest adsorption capacity of MgCl As shown in Figure 8b, Li et al [92] transformed expandable graphite into EG through high-temperature treatment at 800 °C and impregnated the eutectic hydrated 8b reprinted/adapted with permission from Ref. [92].…”

Section: Hydrated Salt-eg Compositesmentioning

confidence: 99%

“…They found that 1:10 was an optimum mass ratio of TriotonX-100 to EG for achieving the highest adsorption capacity of MgCl As shown in Figure 8b, Li et al [92] transformed expandable graphite into EG through high-temperature treatment at 800 °C and impregnated the eutectic hydrated 8b reprinted/adapted with permission from Ref. [92]. 2021).…”

Section: Hydrated Salt-eg Compositesmentioning

confidence: 99%

“…As shown in Figure 8b, Li et al [92] transformed expandable graphite into EG through high-temperature treatment at 800 • C and impregnated the eutectic hydrated salts of sodium carbonate decahydrate (Na 2 CO 3 •10H 2 O, SCD) and SDPD to prepare form-stable composites. The EG network helped decrease the supercooling degree of the eutectic hydrated salts from 5.7 • C to 0.8 • C and increase the thermal conductivity from 0.82 W/(m•K) to 2.74 W/(m•K).…”

Section: Hydrated Salt-eg Compositesmentioning

confidence: 99%

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Carbon-Enhanced Hydrated Salt Phase Change Materials for Thermal Management Applications

Liu,

Li,

et al. 2024

Nanomaterials

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Inorganic hydrated salt phase change materials (PCMs) hold promise for improving the energy conversion efficiency of thermal systems and facilitating the exploration of renewable thermal energy. Hydrated salts, however, often suffer from low thermal conductivity, supercooling, phase separation, leakage and poor solar absorptance. In recent years, compounding hydrated salts with functional carbon materials has emerged as a promising way to overcome these shortcomings and meet the application demands. This work reviews the recent progress in preparing carbon-enhanced hydrated salt phase change composites for thermal management applications. The intrinsic properties of hydrated salts and their shortcomings are firstly introduced. Then, the advantages of various carbon materials and general approaches for preparing carbon-enhanced hydrated salt PCM composites are briefly described. By introducing representative PCM composites loaded with carbon nanotubes, carbon fibers, graphene oxide, graphene, expanded graphite, biochar, activated carbon and multifunctional carbon, the ways that one-dimensional, two-dimensional, three-dimensional and hybrid carbon materials enhance the comprehensive thermophysical properties of hydrated salts and affect their phase change behavior is systematically discussed. Through analyzing the enhancement effects of different carbon fillers, the rationale for achieving the optimal performance of the PCM composites, including both thermal conductivity and phase change stability, is summarized. Regarding the applications of carbon-enhanced hydrate salt composites, their use for the thermal management of electronic devices, buildings and the human body is highlighted. Finally, research challenges for further improving the overall thermophysical properties of carbon-enhanced hydrated salt PCMs and pushing towards practical applications and potential research directions are discussed. It is expected that this timely review could provide valuable guidelines for the further development of carbon-enhanced hydrated salt composites and stimulate concerted research efforts from diverse communities to promote the widespread applications of high-performance PCM composites.

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Section: Hydrated Salt-eg Compositesmentioning

confidence: 99%

Section: Hydrated Salt-eg Compositesmentioning

confidence: 99%

Section: Hydrated Salt-eg Compositesmentioning

confidence: 99%

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Carbon-Enhanced Hydrated Salt Phase Change Materials for Thermal Management Applications

Liu,

Li,

et al. 2024

Nanomaterials

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“…The use of porous materials to adsorb PCMs into the pore structure has been proven to be a simple and effective solution to the problem of liquid leakage [ 26 , 27 , 28 ]. Wu et al [ 29 ] selected expanded graphite to adsorb eutectic hydrated salts. It was found that expanded graphite not only prevented the leakage of hydrated salts, but also reduced the supercooling degree of hydrated salts.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characteristics of Na2HPO4·12H2O-K2HPO4·3H2O/SiO2 Composite Phase Change Materials for Thermal Energy Storage

Wang

et al. 2022

Materials

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In this paper, a series of eutectic hydrated salts was obtained by mixing Na2HPO4·12H2O (DHPD) with K2HPO4·3H2O (DHPT) in different proportions. With the increase in the content of DHPT, the phase transition temperature and melting enthalpy of eutectic hydrated salts decreased gradually. Moreover, the addition of appropriate deionized water improved the thermal properties of eutectic hydrated salts. Colloidal silicon dioxide (SiO2) was selected as the support carrier to adsorb eutectic hydrated salts, and the maximum content of eutectic hydrated salts in composite PCMs was 70%. When the content of the nucleating agent (Na2SiO3·9H2O) was 5%, the supercooling degree of composite PCMs was reduced to the minimum of 1.2 °C. The SEM and FT-IR test results showed that SiO2 and eutectic hydrated salts were successfully combined, and no new substances were formed. When the content of DHPT was 3%, the phase transition temperature and melting enthalpy of composite PCMs were 26.5 °C and 145.3 J/g, respectively. The results of thermogravimetric analysis and heating–cooling cycling test proved that composite PCMs had good thermal reliability and stability. The application performance of composite PCMs in prefabricated temporary houses was investigated numerically. The results indicated that PCM panels greatly increased the Grade I thermal comfort hours and reduced energy consumption. Overall, the composite PCM has great development potential building energy conservation.

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“…(Gao et al , 2003). Wu et al (2006) studied the feasibility of using paraffin (PA) to simulate the thermal infrared characteristics of the corresponding heating parts of the tank. In the experiment, 300 g of PA was wrapped in an aluminum box to make a thermal module, which was melted by heating with a low-voltage electric heating plate.…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet light-initiated preparation of phase change material microcapsules and its infrared imaging effect on fabric

Zhang

Shang

et al. 2020

PRT

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Purpose This study aims to explore the infrared imaging effect of fabrics coated with phase change material microcapsules (PCM-MCs), which are prepared by the initiation of ultraviolet (UV) light. Design/methodology/approach PCM-MCs were prepared by UV polymerization using paraffin (PA) as core material, polymethyl methacrylate as wall material and ferric chloride as photoinitiator. The effects of emulsifier dosage and emulsification temperature on the properties of PA emulsion were investigated. Scanning electron microscopy, particle size analysis, infrared spectroscopy, differential scanning calorimetry and infrared imaging test were used to characterize the properties of microcapsules. Findings The PCM-MCs with good morphology and particle size were prepared with 25 cm of the distance between light source and the liquid. The average particle size was 1.066 µm and the latent heat of phase transition was 19.96 J/g. After 100 accelerated thermal cycles, the latent heat only decreased by 1.8%. It had good heat storage stability and thermal stability. The fabric coated by the microcapsules exhibited a variable temperature hysteresis effect when placed in the sun, and presented a color close to the infrared images of the human palm under the external environment temperature close to the human body temperature. Research limitations/implications The PCM-MCs prepared based on UV light initiation showed good thermal properties and its coated fabrics had an infrared decoy effect below the temperature of the human body. Practical implications This study explored the application of microcapsules in textiles. Originality/value The microcapsules had a certain application potential in infrared decoy effect.

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Design of Eutectic Hydrated Salt Composite Phase Change Material with Cement for Thermal Energy Regulation of Buildings

Cited by 10 publications

References 38 publications

Carbon-Enhanced Hydrated Salt Phase Change Materials for Thermal Management Applications

Carbon-Enhanced Hydrated Salt Phase Change Materials for Thermal Management Applications

Preparation and Characteristics of Na2HPO4·12H2O-K2HPO4·3H2O/SiO2 Composite Phase Change Materials for Thermal Energy Storage

Ultraviolet light-initiated preparation of phase change material microcapsules and its infrared imaging effect on fabric

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