| Title |
A Study on the Power Generation System with Reverse Magnetocaloric Effect for Ocean Thermal Energy Conversion |
| Authors |
Yeongmin Kim ; Yoonjung Ko ; Jong Woo Kim ; Seung Jin Oh |
| DOI |
https://doi.org/10.6110/KJACR.2022.34.12.553 |
| Keywords |
가돌리늄; 하이브리드 발전 시스템; 저온도차; 해수온도차발전; 역자기열량효과 Gadolinium; Hybrid generator system; Low temperature difference; Ocean thermal energy conversion; Reverse magnetocaloric effect |
| Abstract |
This study aimed to performance analysis of a magnetocaloric effect power generation system that can be operated at a low-temperature difference in an ocean thermal energy conversion system. The major components of the system are a gadolinium (Gd) and a permanent magnet. Rotational motion is generated by the interaction of gadolinium with a permanent magnet. The electromagnetic and piezoelectric generators were connected to the gadolinium rotor, and the power generation performance by rotational motion was measured. The electromagnetic generator generated an output of open voltage 2V and a short circuit current of 6mA when the temperature difference between hot and cold water was about 6.5℃ and the rotation speed was 130rpm. Under the same conditions, the piezoelectric generator produced an open circuit voltage and a short circuit current of 8V and 8.2μA, respectively. |