Figure 1.
Phase change material types by melting temperature [11]
Figure 2.
Numerical model geometry
Figure 3.
Mesh independent study results
Figure 4.
Locations of the monitor points in the numerical model
Table 1.
| Parameter type | Value (water) | Value (copper) |
|---|---|---|
| Density [kg/m3] | 998.2 | 8978 |
| Specific heat [J/kgK] | 4182 | 381 |
| Thermal conductivity [W/mK] | 0.6 | 387.6 |
| Viscosity [kg/ms] | 0.001003 | - |
| Latent heat [J/kg] | 2263073 | - |
| Vaporization temperature [K] | 284 | - |
| Boiling point [K] | 373 | - |
Table 2.
Physical properties of magnesium chloride hexahydrate
| Parameter type | Value/function | Source |
|---|---|---|
| Density [kg/m3] |  | [17] |
| Specific heat [J/kgK] | 1489.13 | [18] |
| Thermal conductivity [W/mK] |  | [17] |
| Pure solvent melting heat [J/kg] | 155110 | [17] |
| Viscosity [kg/ms] | 0.09 | [19] |
| Solidus temperature [K] | 380 | [*] |
| Liquidus temperature [K] | 384.65 | [17] |
* [*] – based on liquidus temp. from [15], decreased for calculation stability
Figure 5.
Temperature curves within the PCM with respect to time
Figure 6.
Mass fraction within the heat storage
Figure 7.
Velocity contours
Figure 8.
Heat flux [W] and heat accumulated [J] within the system with respect to time