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%