A foamed cement blocks with paraffin/expanded graphite composite phase change solar thermal absorption material

Liu, Lifang; Chen, Jiayu; Qu, Yue; Xu, Tao; Wu, Huijun; Huang, Gongsheng; Zhou, Xiaoqing; Yang, Lixiu

doi:10.1016/j.solmat.2019.110038

Cited by 66 publications

(6 citation statements)

References 23 publications

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“…The pore dimension of a porous carrier can be as small as a nanometer, so as to effectively prevent the leakage of PCMs. , Combined with its inherent features of large specific surface area and high porosity, the porous supporting carrier has exceptionally high loading capacity for PCMs, and the resultant PCC has high thermal energy conversion efficiency. Several typical porous supporting carriers for the preparation of PCCs have been studied, including metal foam, expanded graphite, carbon nanotube, graphene oxide and graphene aerogel, carbon aerogel, and mesoporous silica . Among the various examined porous substances so far, highly interconnected 3D carbon materials are one of the ideal supporting materials; − in particular, biomass-based carbon materials are favored by many researchers because of their low cost/price, easy availability, and environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

3D Lamellar Structure of Biomass-Based Porous Carbon Derived from Towel Gourd toward Phase Change Composites with Thermal Management and Protection

Song

Cai

et al. 2020

ACS Appl. Bio Mater.

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The practical application of shape-stable phase change composites (PCCs) is beneficial to thermal energy management and energy conservation due to their superior properties. A shape-stable PCC was fabricated by incorporating poly(ethylene glycol) (PEG) with biomass-based porous carbon that was produced via freeze-drying and carbonization using a low-cost and environmentally friendly fresh towel gourd. The towel gourd derived porous carbon with the characteristics of porosity, unique three-dimensional (3D) lamellar structure, and high specific surface area allowed a high encapsulation capacity (up to 94.5 wt %) for PEG. Structural morphologies, as well as the properties of latent heat storage, thermal reliability, thermal energy management, and thermal protection ability of the fabricated shape-stable PCC, were investigated. The micromorphologies revealed that PEG molecular chains were arranged in a 3D lamellar tissue structure. The shape-stable PCC demonstrated excellent thermal reliability and a high melting latent heat of ∼164.3 J/g. The analysis of infrared thermal images indicated that the shape-stable PCC exhibited remarkable strengths in thermal energy management. The result of the thermal insulation simulation experiment proved that the shape-stable PCC had superior thermal protection ability. This study provided an innovative strategy for the design and development of shape-stable PCCs for great potential in heat-insulating protective textiles, solar thermal energy storage, energy-saving buildings, and infrared stealth of military targets.

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Section: Introductionmentioning

confidence: 99%

3D Lamellar Structure of Biomass-Based Porous Carbon Derived from Towel Gourd toward Phase Change Composites with Thermal Management and Protection

Song

Cai

et al. 2020

ACS Appl. Bio Mater.

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“…The PPG films exhibited exceptional η values; specifically, the η value of PPG8 reached 98.7%, which was higher than that reported in many previous works (Figure g). − In general, larger v and η values represent a better energy storage ability. Furthermore, the PPG8 film maintained the original DSC curve and approximately the same enthalpy after 100 and 200 thermal cycles under the program of 10–90–10 °C (Figures h and i).…”

Section: Resultsmentioning

confidence: 64%

Bioinspired Micro/Nanostructured Polyethylene/Poly(Ethylene Oxide)/Graphene Films with Robust Superhydrophobicity and Excellent Antireflectivity for Solar–Thermal Power Generation, Thermal Management, and Afterheat Utilization

et al. 2022

ACS Nano

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The rational utilization and circulation of multiple energy sources is an effective way to address the crises of energy shortages and environmental pollution. Herein, microextrusion compression molding, an industrialized polymer molding technology that combines melt blending and compression molding, is proposed for the mass production of a bioinspired micro/nanostructured polyethylene/poly(ethylene oxide)/graphene (MN-PPG) film. The MN-PPG film exhibits robust shape stability, high storage energy density, and excellent thermal management capability owing to the cocontinuous network formed by poly(ethylene oxide) and the polyethylene matrix. The MN-PPG film has sufficient photothermal property due to the uniformly dispersed graphene nanosheets and the bioinspired surface micro/nanostructures. Interestingly, the MN-PPG film surface exhibits durable superhydrophobicity, acid/alkali resistance, and active deicing performance. Further, a multifunctional energy harvesting and circulation system was established by integrating the MN-PPG film, an LED chip, and a thermoelectric module. The hybrid system produced an open-circuit voltage of 315.4 mV and power output of 2.5 W m–2 under 3 sun irradiation. Furthermore, the afterheat generated by the LED chips at night can be converted into electricity through thermoelectric conversion. The proposed method enables the large-scale fabrication of multifunctional phase change composites for energy harvesting in harsh environments.

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“…Polyethylene glycol (PEG) and paraffin wax (Pw) as typical organic PCMs provide favorable characteristics for LHS such as high heat of fusion, negligible supercooling, nontoxicity and non-corrosivity [6][7][8]. However, their solid-liquid phase transition features make them suffer from the large volume change in their phase transitions, which causes the leakage issue and limit its wide applications [9,10].…”

Section: Introductionmentioning

confidence: 99%

Preparation and application of composite phase change materials stabilized by cellulose nanofibril-based foams for thermal energy storage

Shen

Kwon

Lee

et al. 2022

International Journal of Biological Macromolecules

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A foamed cement blocks with paraffin/expanded graphite composite phase change solar thermal absorption material

Cited by 66 publications

References 23 publications

3D Lamellar Structure of Biomass-Based Porous Carbon Derived from Towel Gourd toward Phase Change Composites with Thermal Management and Protection

3D Lamellar Structure of Biomass-Based Porous Carbon Derived from Towel Gourd toward Phase Change Composites with Thermal Management and Protection

Bioinspired Micro/Nanostructured Polyethylene/Poly(Ethylene Oxide)/Graphene Films with Robust Superhydrophobicity and Excellent Antireflectivity for Solar–Thermal Power Generation, Thermal Management, and Afterheat Utilization

Preparation and application of composite phase change materials stabilized by cellulose nanofibril-based foams for thermal energy storage

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