Thermal conductivity enhancement of paraffin by adding boron nitride nanostructures: A molecular dynamics study

Lin, Changpeng; Rao, Zhonghao

doi:10.1016/j.applthermaleng.2016.09.065

Cited by 65 publications

(21 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, this study showed that the thermal conductivity of paraffin-graphene was 0.560 and 0.249 W mK À1 at 270 K and 320 K, respectively, while the pure paraffin thermal conductivity was 0.3 and 0.164 W mK À1 at 270 K and 300 K, respectively. The eicosane system (C 20 H 42 ) comprising boron nitride was carried out by Rao et al 11 Using an equilibrium molecular dynamics simulation to study the thermal conductivity and other thermal properties, they chose n-eicosane alkane as the paraffin. Two paraffin mixtures, including the boron nitride nanosheet (BNNS) and boron nitride nanotube (BNNT), were simulated.…”

Section: Introductionmentioning

confidence: 99%

Investigating the effects of adding hybrid nanoparticles, graphene and boron nitride nanosheets, to octadecane on its thermal properties

et al. 2020

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Investigating the effects of adding hybrid nanoparticles, graphene and boron nitride nanosheets, to octadecane on its thermal properties

et al. 2020

View full text Add to dashboard Cite

show abstract

“…McCabe et al 14 used MD simulations to study the rotational relaxation time and viscosity of 9-octylheptadecane and accurately predicted the transition from Newtonian to non-Newtonian behavior. Lin and Rao 15 considered n -C 20 as the representative of the paraffin molecule and investigated bulk thermal conductivity and phase behavior. Liu et al 16 constructed a mixture model consisting of paraffin ( n -C 28 and n -C 22 ) and polystyrene to study the heat and mass transfer of this system using the nonequilibrium MD (NEMD) method.…”

Section: Introductionmentioning

confidence: 99%

Transport Properties of Waxy Crude Oil: A Molecular Dynamics Simulation Study

et al. 2020

View full text Add to dashboard Cite

To study the effects of paraffin on viscosity of waxy crude oil and transport properties of small molecules, light and waxy crude oil models were investigated at atmospheric pressure and 293–323 K temperature range using atomistic molecular dynamics simulations. The optimized parameters for liquid simulations all-atom (OPLS-AA) and atomistic polarizable potential for liquids, electrolytes, and polymers (APPLE&P) force fields were employed. The self-diffusion coefficients, viscosity, and paraffin configurations were compared for two oil models and between the two employed force fields. However, the behavior of paraffin molecules predicted by two force fields was quite different. Simulations using the OPLS-AA force field showed crystallization of longer paraffin molecules below 323 K, while simulations with the APPLE&P force field demonstrated a homogeneous mixture down to 293 K. To provide additional validation of the employed force fields, the density, diffusion coefficient, and crystallization of pure alkanes were compared with experimental data. The density and diffusion coefficients of n -C 6 and n -C 14 simulated with the APPLE&P force field were found to be in much closer agreement with the experimental data. The OPLS-AA force field was found to overestimate the crystallization temperature of pure alkanes. Therefore, simulations with the APPLE&P provide more realistic description of the waxy oil structure and transport properties. In this temperature range, the paraffin molecules are homogeneously distributed in the mixture, and viscosity of the system increased by a factor of two compared to light oil. Crystallization of paraffins requires lower temperatures or/and the presence of other components such as nanoparticles or asphaltene molecules to facilitate nucleation.

show abstract

“…PCMs are substances that absorb/release thermal energy during a phase transformation, which is typically melting/solidification, and can be categorized into organic, inorganic, and eutectics [4]. Among organic PCMs, paraffins or alkanes with a chemical formula of C n H 2n+2 ( n = 12–50) have been widely investigated [4,5,6,7,8,9,10,11] due to their chemical stability, high latent heat of fusion, low cost, compatibility with metal containers, and non-corrosive nature [4]. Despite the aforementioned advantages of paraffins, one of their major disadvantages is their low thermal conductivity, which can significantly interfere with their charging/discharging rates [12].…”

Section: Introductionmentioning

confidence: 99%

“…Despite the aforementioned advantages of paraffins, one of their major disadvantages is their low thermal conductivity, which can significantly interfere with their charging/discharging rates [12]. To address the low thermal conductivity of the paraffins, the addition of thermally conducting agents to form paraffin composites has been widely explored [5,6,11,12,13,14]. Conductive fillers including metals [2], metal foams [15], β-AlN [16], and Al [17] have been added to PCMs for thermal conductivity augmentation.…”

Section: Introductionmentioning

confidence: 99%

“…While the thermal enhancement of boron nitride (BN) derivatives has been investigated for different polymers including poly (vinyl butyral) [30], poly (siloxane) [31], poly (imide) [32], and epoxy resins [33,34,35], relatively fewer studies have focused on their impact on paraffins [14,36,37,38]. In particular, studies on the effect of BNNTs on paraffins are very limited [11]. Therefore, it is of interest to investigate the behavior of BN nanoadditives in paraffin materials for TES applications.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Epoxy–PCM Composites with Nanocarbons or Multidimensional Boron Nitride as Heat Flow Enhancers

et al. 2019

View full text Add to dashboard Cite

The need for affordable systems that are capable of regulating the temperature of living or storage spaces has increased the interest in exploring phase change materials (PCMs) for latent heat thermal energy storage (LHTES). This study investigates n-nonadecane (C19H40) and n-eicosane (C20H42) as alkane hydrocarbons/paraffins for LHTES applications. An epoxy resin is used as the support matrix medium to mitigate paraffin leakage, and a thickening agent is utilized to suppress phase separation during the curing process. In order to enhance the thermal conductivity of the epoxy–paraffin composite, conductive agents including carbon nanofibers (CNFs), carbon nanotubes (CNTs), boron nitride (BN) microparticles, or boron nitride nanotubes (BNNTs) are incorporated in different gravimetric ratios. Enhancements in latent heat, thermal conductivity, and heat transfer are realized with the addition of the thermal fillers. The sample composition with 10 wt.% BN shows excellent reversibility upon extended heating–cooling cycles and adequate viscosity for template casting as well as direct three-dimensional (3D) printing on fabrics, demonstrating the feasibility for facile integration onto liners/containers for thermal regulation purposes.

show abstract

Thermal conductivity enhancement of paraffin by adding boron nitride nanostructures: A molecular dynamics study

Cited by 65 publications

References 41 publications

Investigating the effects of adding hybrid nanoparticles, graphene and boron nitride nanosheets, to octadecane on its thermal properties

Investigating the effects of adding hybrid nanoparticles, graphene and boron nitride nanosheets, to octadecane on its thermal properties

Transport Properties of Waxy Crude Oil: A Molecular Dynamics Simulation Study

Epoxy–PCM Composites with Nanocarbons or Multidimensional Boron Nitride as Heat Flow Enhancers

Contact Info

Product

Resources

About