Enhanced thermal conductivity of n-octadecane containing carbon-based nanomaterials

Efficient Solar-to-Thermal Energy Conversion and Storage with High-Thermal-Conductivity and Form-Stabilized Phase Change Composite Based on Wood-Derived Scaffolds

“…All the thermal conductivities were collected between 24 and 26 • C by DLI (see Supplementary Materials) and plotted in Figure 3c. Pure PCM in the solid state has a thermal conductivity of around 0.25-0.31 W•m −1 •K −1 , similar to what has been reported by other groups [10,16]. The measured thermal conductivity for the CW matrix was 0.46 W m −1• K −1 , and this was due to the porous structure of the CW and the large amount of air inside the structure.…”

“…This continuous path is important for good thermal transport, because continuous networks have showed greater improvement of thermal conductivity of phase change materials compared with dispersed nanofillers. The dispersed nanofillers typically show a 15%-80% increase of thermal conductivity, whereas the continuous network can have up to a 463% increase [9,10,13,16,20]. The continuous carbon structure of the CW did not collapse during the vacuum impregnation process, which is important to achieve significant thermal transport enhancement.…”

“…However, organic PCMs suffer from intrinsic low thermal conductivity, which limits their rate of thermal energy uptake and release. High-thermal-conductivity fillers, such as graphene [6][7][8][9][10][11], carbon nanotubes (CNTs) [12][13][14][15], and carbon fibers [16], have been dispersed into organic PCMs to enhance thermal conductivity.…”

Review of Thermophysical Property Data of Octadecane for Phase-Change Studies

“…Thermal conductivities have been measured with transient as well as stationary measurement methods. Irby et al [80], Harish et al [81], Wu et al [82], Vélez et al [27], Khadiran et al [83] and Águila V et al [84] applied the transient hot wire (TW) method and Jeon et al [32], Yu et al [38], Motahar et al [85] and Motahar et al [86] used a transient plane source (TP) to measure solid and liquid state thermal conductivities while Ho and Gao [28] have measured the liquid state only with a transient thermal analyser (TA). The stationary methods can be categorized in measurement set-ups analysing the heat flow between parallel plates (SP, stationary plate) [87,88] or coaxial cylinder systems (SC, stationary cylinder) [89,90,91].…”

“…The error bars are the specified uncertainty of the data. ( a ) ∘ [27] □ [32] ⋄ [38] Δ [39] ∇ [80] ◊ [80] ⬠ [80] ∘ [81] □ [82] ⋄ [83] Δ [85] ∇ [86] ◊ [88] ⬠ [90] ∘ [91] □ [94]; ( b ) ∘ [27]□ [28] ⋄ [80] Δ [81] ∇ [82] ◊ [83] ⬠ [84] ∘ [85] □ [86] ⋄ [87] Δ [88] ∇ [89] ◊ [92] ⬠ [93] ∘ [94].…”