4. Conclusion
The TEC cold plate temperature inside TER was using the electric current of 3.5 A and then decreased
temperature from 30 ºC to – 4.2 ºC for 1 hr and continuous to –7.4 ºC for 24 hrs. The TER was decreased from 30 ºC
to 20 ºC for 1 hr and slowly decreasing temperature for 24 hrs. The maximum COP of TEC and TER were 3.0 and
0.65, respectively.
Acknowledgement
The project was supported by Research and Development Institute of Sakon Nakhon Rajabhat
University and Electricity Generating Authority of Thailand (EGAT) are gratefully acknowledged.