In this study a theoretical assessment of PVT-TEC (photovoltaic thermal thermoelectric cooler cooling/heating system is performed, which supplies the domestic hot water and cold air for a refrigerator. Due to the various solar radiation intensities during the day, the outlet hot water temperature differs. (In order to get the hot water temperature to the set point temperature at each hour, the system needed different numbers of thermoelectric modules. The minimum and maximum amount of required thermoelectric modules at day and night were found 3 and 19, respectively, and this amount at night is 21. The maximum and minimum total energy consumptions of thermoelectric modules were calculated 766.836 and 109.548 W, respectively.
