Table 4 Properties of PCM and alumina nanoparticles42,53.
Properties | Pure RT82 PCM | Alumina nanoparticles (Al2O3) |
|---|---|---|
Specific heat capacity, \({C}_{p}\), J kg−1 K−1 | 2000 | 765 |
Thermal conductivity, \(k\), W mK−1 | 0.2 | 36 |
Density, \(\rho\), kg m−3 | 770 | 3600 |
Dynamic viscosity, \(\mu\), kg ms−1 | 0.03499 | – |
Latent heat, L, J kg−1 K−1 | 176,000 | – |
Volumetric expansion coefficient, \(\beta\), K−1 | 100 × 10–6 | 4.86 × 10–6 |
Solidus, \({T}_{s}\), K | 350 | – |
Liquidus, \({T}_{l}\), K | 358 | – |
Nanoparticle diameter, \({d}_{p}\), nm | – | 20 |