Have been successfully developed the solar drying integrated solar collector and photovoltaic (PV). However, heat waste is transfer from the back side of solar collector to surrounding over operation. A thermoelectric generator (TEG) relies on the "Seebeck effect" to directly convert heat into electricity. TEG is applied to use in specific area such as detector, egg incubator, exhaust car, watch
... [Show full abstract] etc. The objective of this research is focused on development a solar drying technology with using solar collector combined with TEG module. The system was constructed and installed at School of Renewable Energy Technology, Naresuan University, Phitsanulok Thailand. Temperature profile the back side of solar collector, power of TEG module, air flow rate of blower were measured and analyzed. As the results, temperature at behind of solar collector was decreased with increasing the produced power of TEG module which corresponded with solar irradiance. Solar collector can be operated and produced hot air temperature about 70-80 °C supported to chamber for drying. TEG can be produced the electricity about 0.0813 V/module. The deference of temperature surface was 1.77 °C and the average temperature of back side 45.4 °C. The ambient temperature was 35.8 °C. In addition, the system can be used blower for controlling air flow rate by using electricity from TEG module. It can be concluded the solar collector can be combined with TEG module for producing the electricity to supply the blower within tunnel drying, including with a guideline for improve the performance of solar drying technology.
