Table 1 Heat of fusion, melting temperature, and onset temperature of NaNO 3 -KNO 3 (60:40) mixture and nanofluids obtained with different nanoparticles
Material | Nanoparticle concentration (wt.%) | Heat of fusion (kJ/kg) | Onset temperature (°C) | Melting temperature (°C) |
|---|---|---|---|---|
Base salt mixture | - | 110.01 | 219.88 | 232.01 |
Base salt + SiO2 | 0.5 | 109.20 | 219.48 | 230.20 |
1.0 | 126.39 | 218.84 | 230.44 | |
1.5 | 114.40 | 219.47 | 231.80 | |
Base salt + Al2O3 | 0.5 | 115.45 | 219.25 | 229.95 |
1.0 | 127.11 | 219.25 | 229.33 | |
1.5 | 116.83 | 219.84 | 230.51 | |
Base salt + TiO2 | 0.5 | 110.14 | 219.78 | 229.92 |
1.0 | 115.26 | 219.89 | 230.80 | |
1.5 | 105.36 | 219.65 | 230.78 | |
Base salt + SiO2-Al2O3 | 0.5 | 112.82 | 219.70 | 232.23 |
1.0 | 127.24 | 209.32 | 223.89 | |
1.5 | 114.06 | 211.51 | 224.01 |