Simultaneous enhancement of latent heat and thermal conductivity of docosane-based phase change material in the presence of spongy graphene

Li, J.F.; Lu, Wu; Zeng, Yibing; Luo, Zhengping

doi:10.1016/j.solmat.2014.05.018

Cited by 116 publications

(48 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As such, the total sensible enthalpy, which was 16.46 kJ/kg, was calculated by the area enclosed by the sensible specific heat from 42 to 49 • C. Therefore, the latent enthalpy of n-docosane was 243.46 kJ/kg. Compared with the published data [7,[28][29][30][31] in which the initial phase change temperature of n-docosane was from 40.67 to 43.15 • C, and the latent heat is from 194.6 to 241.3 kJ/kg, the measurement results in this paper are reasonable.…”

Section: Thermophysical Properties Of N-docosane In the Containersupporting

confidence: 74%

“…It can be calculated that the thermal conductivity of n-docosane at 25 °C was 0.258 W/m·°C. Some references show that the thermal conductivity of n-docosane ranges from 0.22 to 0.26 W/m·°C at room temperature [7,28,29]. Moreover, Rao et al [30] noticed that the thermal Therefore, the fitting result of solid thermal conductivity of n-docosane measured in this paper is expressed in Equation (26).…”

Section: Thermophysical Properties Of N-docosane In the Containermentioning

confidence: 64%

“…Moreover, Rao et al [30] noticed that the thermal Therefore, the fitting result of solid thermal conductivity of n-docosane measured in this paper is expressed in Equation (26). It can be calculated that the thermal conductivity of n-docosane at 25 • C was 0.258 W/m· • C. Some references show that the thermal conductivity of n-docosane ranges from 0.22 to 0.26 W/m· • C at room temperature [7,28,29]. Moreover, Rao et al [30] noticed that the thermal conductivity of n-docosane increases when the temperature increases.…”

Section: Thermophysical Properties Of N-docosane In the Containermentioning

confidence: 66%

See 2 more Smart Citations

Research on Measurement Technology of Thermophysical Properties for Full-Scale Phase Change Material Product in a Container

Wang

Dai

2019

Applied Sciences

View full text Add to dashboard Cite

The thermophysical properties of phase change material include thermal conductivity, heat of absorption, and phase change temperature range. This paper investigates the measurement methods of thermophysical properties for phase change material inside a full-scale container. The influence of contact thermal resistance is considered in a thermal conductivity test, and the formula for calculating the thermal conductivity of a phase change material inside the full-scale container is derived. In addition, the heat of absorption is measured based on the calibration results of the correction coefficient for heat flux sensors. In order to verify the reliability of the measurement method, the thermophysical properties of docosane and erythritol inside a full-scale specimen are measured, and the results are compared with HotDisk analyzer results and published data. The comparison results reveal that the method proposed in this paper can accurately measure the thermophysical properties of phase change material inside a full-scale specimen.

show abstract

Section: Thermophysical Properties Of N-docosane In the Containersupporting

confidence: 74%

Section: Thermophysical Properties Of N-docosane In the Containermentioning

confidence: 64%

Section: Thermophysical Properties Of N-docosane In the Containermentioning

confidence: 66%

See 1 more Smart Citation

Research on Measurement Technology of Thermophysical Properties for Full-Scale Phase Change Material Product in a Container

Wang

Dai

2019

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Therefore, GNPs can be easily and successfully incorporated with polymeric matrices to enhance the comprehensive performance of polymers. As for PCMs, it has already been demonstrated that the addition of even a small mass fraction of GNPs can significantly improve the thermal conductivity of different PCMs such as palmitic acid [23,29], beeswax [12], eicosane [30], 1-octadecanol [31], decosane [32]. In addition, the rheological behavior of PCMs can be significantly influenced by the addition of nanoplates, which determines the transportablilty in pump systems for PCMs nanofliuds applications.…”

Section: Introductionmentioning

confidence: 99%

Thermal Properties of PEG/Graphene Nanoplatelets (GNPs) Composite Phase Change Materials with Enhanced Thermal Conductivity and Photo-Thermal Performance

Wang

Zhu

et al. 2018

Applied Sciences

View full text Add to dashboard Cite

This paper mainly concentrates on the thermal conductivity and photo-thermal conversion performance of polyethylene glycol (PEG)/graphene nanoplatelets (GNPs) composite phase change materials (PCMs). The temperature-assisted solution blending method is used to prepare PCM with different mass fraction of GNPs. According to the scanning electron microscope (SEM), GNPs are evenly distributed in the PEG matrix, forming a thermal conduction pathway. The Fourier transform infrared spectra (FT-IR) and X-ray diffraction (XRD) results show that the composites can still inherit the crystallization structure of PEG, moreover, there are only physical reactions between PEG and GNPs rather than chemical reactions. Differential scanning calorimeter (DSC) and thermal conductivity analysis results indicate that it may be beneficial to add a low loading ration of GNPs to obtain the suitable latent heat as well as enhance the thermal conductivity of composites. To investigate the change in the rheological behavior due to the effect of GNPs, the viscosity of the composites was measured as well. The photo-thermal energy conversion experiment indicates that the PEG/GNPs composites show better performance in photothermal energy conversion, moreover, the Ultraviolet-visible-Near Infrared spectroscopy is applied to illustrate the reasons for the higher absorption efficiency of PEG/GNPs for solar irradiation.

show abstract

“…Obviously, there are no new vibration bands forming in the nanocomposite PCM, compared to pure paraffin. It indicates that there is no change in the molecular structure of paraffin in the presence of carbon nanofillers[21], which enable the nanocomposite PCM to keep the original characteristics of paraffin, such as chemical stability.Phase change temperature and enthalpy DSC analysis was conducted to investigate the influence of various carbon nanofillers on the thermal properties of nanocomposite PCM. Considering the similarity of the curves, the DSC curves of the different nanocomposites were only shown with 0.5 mass%, compared with pure paraffin inFig.…”

mentioning

confidence: 99%

The effects of various carbon nanofillers on the thermal properties of paraffin for energy storage applications

Tong

Nie

et al. 2015

J Therm Anal Calorim

View full text Add to dashboard Cite

The addition of carbon nanofillers to phase change materials (PCMs) has received much attentions recently. The shape effects of carbon nanofillers on the thermal properties of paraffin were investigated in this work. Four types of nanocomposite PCMs were prepared by mixing paraffin with multi-wall carbon nanotubes (MWCNTs), graphitized MWCNTs, nanographene with different layer numbers (GNP-B, GNP-C). It shows that phase change enthalpy of nanocomposite PCM decreases gradually with the increasing of the loading of carbon nanofillers. Due to the nucleating action of carbon nanofillers, the supercooling degree of nanocomposite PCM slightly decreases. The microstructure of the nanofillers plays an important role in enhancing the thermal conductivity of paraffin. It is the flaky structure of GNP shows a more significant effect on enhancing the thermal conductivity of paraffin than the tubular structure of CNTs, which is confirmed by comparing the melting/freezing time of PCM. In the four kinds of carbon nanofillers, GNP-C shows the greatest thermal conductivity enhancement up to 52.4 % at the loading of 3 mass%.

show abstract

Simultaneous enhancement of latent heat and thermal conductivity of docosane-based phase change material in the presence of spongy graphene

Cited by 116 publications

References 37 publications

Research on Measurement Technology of Thermophysical Properties for Full-Scale Phase Change Material Product in a Container

Research on Measurement Technology of Thermophysical Properties for Full-Scale Phase Change Material Product in a Container

Thermal Properties of PEG/Graphene Nanoplatelets (GNPs) Composite Phase Change Materials with Enhanced Thermal Conductivity and Photo-Thermal Performance

The effects of various carbon nanofillers on the thermal properties of paraffin for energy storage applications

Contact Info

Product

Resources

About