A comparative evaluation of the performances of three built-in-storage-type solar water heaters

Abstract Three built-in-storage-type solar water heaters of equal volume were tested under identical conditions for performance evaluation. One of these water heaters was rectangular and the other two were triangular. One of the triangular water heaters had a baffle plate and the other did not. The triangular water heater with baffle plate was found to be not superior to the rectangular one in efficiency during the heating period. However, it was more efficient during the cooling period. The triangular water heater without the baffle plate was found to be the most efficient one during both the heating and the cooling periods.

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