铝电解槽温差发电技术探索与研究OA

Thermoelectric power generation is a technology that converts thermal energy into electrical energy by utilizing temperature differences.This technology is based on the thermoelectric effect,particularly the Seebeck effect.Due to the temperature difference between two materials,an electromotive force is generated at the two ends of a thermocouple.By combining a P-type thermoelectric element and an N-type thermoelectric element and connecting the cold and hot end electrodes at their respective cold and hot ends,a thermoelectric single unit or single couple is formed,thereby achieving the conversion of electrical energy.By using a thermoelectric stack composed of multiple thermocouples,the output voltage and power can be increased.The bottom plate and side structure of the cell shell are flat,have a large area,and are basically unoccupied by personnel,making them ideal areas for heat source utilization.The temperature on the side can reach 200 to 300℃,and thermoelectric generation modules can be installed there,allowing direct power generation on the aluminum electrolytic cell.These two parts account for approximately 24%of the heat loss of the electrolytic cell.The thermoelectric conversion rate in this study is about 5%,and it is expected to reduce power consumption by approximately 200 kW.h/t-Al,improving energy utilization and reducing production costs.