Carbon paper is commonly used as the gas diffusion layer (GDL) in polymer electrolyte membrane (PEM) fuel cells as it exhibits high chemical and mechanical durability. This diffusion medium is also anisotropic, which directly affects its transport properties and specifically the thermal...

In many studies, carbon nanoparticles with high values of thermal conductivity (10–3000W/mK) have been embedded into phase change thermal energy storage materials (PCMs) in order to enhance their bulk thermal properties. While a great deal of work to date has focused on determining the effect...

A sort of new microencapsulated phase change materials (MEPCM) based on paraffin wax core and poly(methyl methacrylate-co-methyl acrylate) shell with nano alumina (nano-Al2O3) inlay was synthesized through emulsion polymerization. Various techniques were used to characterize the as-prepared...

Myristic acid-graphite nanoplates (MA/Gr) composite phase change materials were prepared and thermal properties at various Gr loadings, 0.5%, 1% and 2%, were investigated. Melting and freezing temperatures, latent heats of melting and freezing, the extent of supercooling and the crystallization...

Thermal signature of supercapacitors are investigated in-situ and ex-situ using commercial supercapacitors.

A model based on microcanonical Monte Carlo method is used to study the application of the temperature gradient along a two-dimensional (2D) Ising system. We estimate the system size effects on thermal conductivity, K, for a nano-scale Ising layer with variable size. It is shown that K scales...

By using entropy and entropy production, we calculate the steady flux of some phenomena. The method we use is a competition method, SS/τ+σ=maximum, where SS is system entropy, σ is entropy production and τ is microscopic interaction time. System entropy is calculated from the equilibrium...

Thermal conductivity of thin film is analyzed in this paper. It has been shown that at low temperatures, thermal conductivity of film is considerably lower than that of bulk structure. Also, the dependence of activation energy on boundary conditions has been investigated. It has been found that...

Researches on the nanofluids have been increased very rapidly over the past decade. In spite of some inconsistency in the reported results and insufficient understanding of the mechanism of the heat transfer in nanofluids, it has been emerged as a promising heat transfer fluid. In the...