Research Article
Performance of a Pebble Bed Thermal Storage Integrated with Concentrating Parabolic Solar Collector for Cooking
Table 7
Efficiency for the condition of highest DNI.
| | Conduction | Forced convection |
| Water temperature at 53 min for 5 liters | 87°C | 93.0°C | Useful cooking energy [MJ] | 1.344 | 1.463 | Stored energy for 11 h charging | 40.1 MJ | 40.1 MJ | Solar energy on aperture | 60.1 | 60.1 | Storage efficiency | 66.7% | 66.7% | Thermal efficiency of cooker | 41% | 45% | Overall efficiency of cooker | 27.34% | 30% |
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