The solar fractions for this period were found to be 63 and 73%, respectively. The monetary and embodied energy payback periods for the two heaters were, respectively, found to be 6.7 and 6.1 years, and 185 and 169 days.
The solar fractions for this period were found to be 63 and 73%, respectively. The monetary and embodied energy payback periods forthe two heaters were, respectively, found to be 6.7 and 6.1 years, and 185 and 169 days.