Thermal energy storage performance of paraffin-based composite phase change materials filled with hexagonal boron nitride nanosheets

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

“…Clearly, at the relatively high temperature (above 345 K), the thermal conductivities of BNNS mixture and BNNT mixture are considerably high compared with the pure paraffin, more than two or three orders of magnitude larger. Although this is quite uncommon in most experiments we presented above and Fang et al [17] found that by filling paraffins with 10 wt.% BNNS the thermal conductivity of composite only enhanced up to 60%, here we would not trouble with this discrepancy between the MD results and experiment observations because of perhaps the unrobust force field, the computional method itself, the BNNS used in experiments containing impurities and defects and so on. And the faster increasing after melting is related to the solid-liquid thermal resistance [33][34][35][36] between n-eicosane and BN nanostructures.…”

“…It is true and a common phenomenon in many experiment studies when some high thermal conductivity fillers (e.g. graphene, CNTs, expanded graphite and carbon fiber) are added into paraffin [5][6][7]17]. And the paraffin-based PCM composites still have the relatively high latent heat, though the latent heat is a marked decrease after adding other materials.…”

“…However, the low thermal conductivity of paraffin seems to greatly restrict its further developments and applications in the large scale. Thus, a mass of researches and investigations have been carried out and performed in order to enhance the thermal conductivity [5][6][7][8][9][10][11][12][13][14][15][16][17].…”

A review on energy conservation in buildings by use of Air layers and Phase Change Material

“…Organic PCMs have drawn attention because of their additional latent heat capacity, appropriate phase-transition temperature and stable physical and chemical characteristics. Pure organic PCMs demonstrate some short comings that limit their usage in practice, including low thermal conductivity (usually less than 0.2W/m2 K for organic PCMs [40]), high volume variation and liquid see page during state changes [41]. Organic PCMs are classified as paraffin or non-paraffin.…”

Experimental investigation on the thermal performance of a heat sink filled with porous metal fiber sintered felt/paraffin composite phase change material

“…However, the polymer wall of these composite PCMs had low thermal conductivity and hence considerably decreased the heat transfer from the PCM to the energy storage medium. Hexagonal boron nitride nanosheets [12], herringbone style graphite nanofibers [13], Fe 3 O 4 nanoparticles [14], carbon nanotubes [15,16], carbon nanofibers [17] and graphene nanoplatelets [16,17] were proposed as promising nanofillers for preparing high-conductivity composite PCMs. However, Parameshwaran et al [18] found that increasing mass loading of nanocomposite resulted in 4% increased viscosity of PCM.…”