Table 7 Comparison of percentage improvement in yield, energy and exergy efficiency, and percentage reduction in CPL and payback period of present study with pertinent literature.
References | Modification | Improvement (%) | Reduction (%) | |||||
|---|---|---|---|---|---|---|---|---|
\({\dot{m}}_{w}\) | \({\eta }_{en}\) | \({\eta }_{ex}\) | \(CPL\) | \(PP\) | ||||
Samuel et al.50 | Single slope | + | • spherical ball salt storage • sponge | 54.2 08.3 | - | - | 33.3 06.7 | - |
Panchal et al.45 | Single slope | + | • inclined fins • vertical fins | 26.8 24.2 | - | - | - | - |
Kabeel et al.52 | Single slope | + | • coated red bricks | 60.0 | - | - | 45.1 | 43.9 |
Suraparaju et al.54 | Single slope | + | • Ball marbles | 21.2 | - | - | 8.0 | 12.3 |
Elmaadawy et al.33 | Double slope | + | • Gravels, black wick, dispersed carbon black nanoparticles | 68 | 50.6 | 146.3 | 30.7 | - |
Yarramsetty et al.48 | PSS | + | • upward facing clay pots • downward facing clay pots | 47.2 60.0 | - | - | - | - |
Panchal et al.57 | Single slope | + | • evacuated tubes solar collector, perforated fins, and pebbles | 144 | 2.3 | 142.2 | 8.9 | - |
Atteya and Abbas58 | Single slope | + | • stepped • yellow sand • black sand with reflector | 55 71 92 | 24.4 31.4 41.2 | - | - | - |
Pandey and Naresh60 | PSS | + | • pulsating heat pipe | 37.1 | 25.5 | 29.3 | 13.3 | 7.8 |
Mahala and Sharma61 | PSS | + | • PCM + fins • Gravels • PCM + fins + gravels | 31.7 37.8 83.9 | 29.3 37.2 81.1 | 107 152 273 | 04.2 25.0 29.2 | 3.4 24.6 29.1 |
Present study | PSS | + | Clay pots facing | |||||
• upward (C-A2) • upward-downward (C-A3) • downward (C-A4) | 48.1 55.3 64.0 | 49.8 55.9 65.3 | 10.2 21.6 36.3 | 30.9 33.9 37.5 | 30.9 34.3 37.9 | |||
Black coated clay pots facing | ||||||||
• upward (C-A5) • upward-downward (C-A6) • downward (C-A7) | 62.6 78.0 90.8 | 63.2 18.0 89.2 | 49.1 78.3 122.6 | 34.8 40.3 44.5 | 35.1 40.7 44.7 | |||
