Daily performance of a solar dish collector

Solar energy exploitation is one of the most promising techniques for achieving the sustainability in the energy domain. The objective of this work is to investigate the daily performance of a solar dish collector under different operating temperature levels. A solar dish collector with 10.28 in' aperture and a spiral coil absorber is investigated. The analysis is performed with a developed numerical model in engineering equation solver which has been validated with experimental results. The analysis proved that the daily thermal efficiency of the collector is ranged from 67.36% to 54.65% for inlet temperatures from 50 C to 350 C, respectively. On the other hand, the exergy efficiency presents an increasing rate of the inlet temperature and it is found to be ranged from 8.77% up to 31.07% for the respective temperatures. The daily exergy production of the collector can reach up to 26 kWh with a respective thermal production of 50 kWh for inlet temperature equal to 350 C. The results of this work can be exploited for the suitable evaluation of the solar dish collector on a daily basis.