Table 3 Thermal characteristics of CPCMs-1, CPCMs-2, CPCMs-3, CPCMs-4, CPCMs-4c, CPCMs-4c1, CPCMs-4 with 1% EG, CPCMs-4 with 3% EG, CPCMs-4 with 5% EG and PEG
Samples | Mass fraction of PEG (wt%) | T m (°C) | T s(°C) | ΔH m (kJ/kg) | ∆H s (kJ/kg) |
|---|---|---|---|---|---|
CPCMs-1 | 20.0 | 56.8 ± 0.1 | 44.9 ± 0.3 | 37.8 ± 1.7 | 29.1 ± 2.1 |
CPCMs-2 | 40.0 | 57.2 ± 0.1 | 45.9 ± 0.2 | 76.0 ± 2.4 | 69.9 ± 3.0 |
CPCMs-3 | 60.0 | 57.3 ± 0.1 | 46.4 ± 0.1 | 111.2 ± 2.4 | 105.3 ± 1.4 |
CPCMs-4 | 80.0 | 58.1 ± 0.1 | 48.6 ± 0.1 | 151.1 ± 1.8 | 140.3 ± 2.6 |
CPCMs-4c | – | 59.5 ± 0.1 | 48.7 ± 0.2 | 143.0 ± 2.3 | 133.7 ± 2.7 |
CPCMs-4c1 | – | 58.9 ± 0.1 | 48.4 ± 0.2 | 126.4 ± 2.5 | 117.5 ± 1.9 |
CPCMs-4 + 1% EG | 79.2 | 58.1 ± 0.2 | 48.3 ± 0.1 | 150.1 ± 3.6 | 138.3 ± 2.0 |
CPCMs-4 + 3% EG | 77.7 | 58.0 ± 0.3 | 48.0 ± 0.2 | 148.6 ± 2.4 | 135.2 ± 3.7 |
CPCMs-4 + 5% EG | 76.2 | 58.6 ± 0.2 | 48.5 ± 0.2 | 145.3 ± 2.6 | 131.4 ± 2.5 |
PEG | 100 | 59.0 ± 0.4 | 46.5 ± 0.2 | 189.5 ± 1.4 | 172.5 ± 1.9 |