Table 2 Design matrix for RSM analysis.
Run | Nanoparticle concentration (wt%) | Coolant flow rate (L/min) | Solar irradiance (W/m²) | Type of nanofluid stabilization | Efficiency improvement (%) |
|---|---|---|---|---|---|
1 | 0.2 | 0.5 | 800 | Citrate | 19.86 |
2 | 0.8 | 1.5 | 1000 | PVP | 21.54 |
3 | 0.5 | 1.0 | 900 | Citrate | 18.59 |
4 | 0.5 | 1.0 | 900 | PVP | 20.32 |
5 | 0.2 | 1.5 | 1000 | Citrate | 17.22 |
6 | 0.8 | 0.5 | 800 | PVP | 21.87 |
7 | 0.5 | 0.5 | 800 | Citrate | 19.87 |
8 | 0.5 | 1.5 | 1000 | PVP | 22.35 |
9 | 0.2 | 1.0 | 900 | Citrate | 18.45 |
10 | 0.8 | 1.0 | 900 | PVP | 20.75 |
11 | 0.5 | 0.5 | 1000 | Citrate | 18.96 |
12 | 0.5 | 1.5 | 800 | PVP | 21.62 |
13 | 0.5 | 1.0 | 900 | Citrate | 19.57 |
