Table 1.
Experimental results of DSC for NEPCMs
|
Samples |
Additive concentration (wt.%) |
Process |
Phase-change temperature (°C) |
Latent heat (kJ/kg) |
|
|---|---|---|---|---|---|
| Ts | Tp | ||||
| Paraffin (P) |
- |
Charging |
54.00 |
60.74 |
199.4 |
| Discharging |
60.64 |
58.68 |
194.5 |
||
| P + Al2O3 |
1.0 |
Charging |
53.51 |
61.18 |
197.9 |
| Discharging |
61.51 |
58.68 |
191.2 |
||
| 2.0 |
Charging |
53.61 |
61.17 |
194.6 |
|
| Discharging |
61.61 |
58.71 |
189.5 |
||
| 3.0 |
Charging |
53.71 |
61.11 |
184.2 |
|
| Discharging |
61.54 |
58.52 |
179.9 |
||
| P + TiO2 |
1.0 |
Charging |
53.28 |
61.19 |
200.6 |
| Discharging |
61.56 |
58.64 |
193.9 |
||
| 2.0 |
Charging |
53.39 |
61.00 |
200.1 |
|
| Discharging |
61.51 |
58.77 |
194.0 |
||
| 3.0 |
Charging |
53.54 |
61.00 |
198.7 |
|
| Discharging |
61.53 |
58.59 |
193.6 |
||
| P + SiO2 |
1.0 |
Charging |
55.50 |
61.1 |
185.6 |
| Discharging |
61.64 |
58.15 |
180.0 |
||
| 2.0 |
Charging |
56.62 |
62.18 |
180.4 |
|
| Discharging |
61.71 |
58.04 |
175.2 |
||
| 3.0 |
Charging |
55.54 |
62.34 |
175.0 |
|
| Discharging |
61.66 |
57.92 |
168.7 |
||
| P + ZnO | 1.0 |
Charging |
55.75 |
60.69 |
187.4 |
| Discharging |
61.58 |
58.38 |
182.2 |
||
| 2.0 |
Charging |
55.01 |
61.31 |
184.7 |
|
| Discharging |
61.73 |
58.46 |
178.5 |
||
| 3.0 | Charging |
55.02 |
60.57 |
171.9 |
|
| Discharging | 61.69 | 58.65 | 167.5 | ||