铝电解槽侧壁余热温差发电的应用  

Thermoelectric generation technology for waste heat utilization in aluminum reduction cell sidewalls

作　　者：黄学章[1] 张承丽[1] 陈岗[1] 张韬[1] 徐冰[1] 

机构地区：[1]中南大学能源科学与工程学院,湖南长沙410083

出　　处：《电源技术》2013年第9期1580-1584,共5页Chinese Journal of Power Sources

基　　金：国家自然科学基金-云南联合基金重点项目(U0937604)

摘　　要：铝电解是高能耗产业,近一半的电能以热量形式直接散失,降低铝电解槽能耗是铝电解过程节能重要的研究课题之一。根据铝电解槽侧部熔体区槽壳散热特点,在测试槽壳热流密度与槽壁温度等参数的基础上,对铝电解槽的低品位废热进行温差发电的可行性分析;通过实验的方法研究了磁场对温差发电器件的性能影响;根据散热孔的结构,设计制作了温差发电装置,并对散热器进行了优化;在电解槽上对温差发电装置的输出功率、温差电转换效率进行测试,数据表明温差发电在铝电解中的应用是可行的,为铝电解过程的节能探索出一条新途径。Aluminum industry is a kind of high-energy consumption industry, and about half of the electric energy loses in the form of heat. Reducing energy consumption is one of the most important research subjects in aluminum reduction process. According to the heat dissipation characteristics of pot shell in melt zone of reduction cell sidewall, the feasibility of utilizing low level waste heat of aluminum reduction cell into thermoelectric generation was analyzed by testing the heat flux and temperature of aluminum reduction cell sidewalls. How magnetic field impacts on semiconductor thermoelectric generator was studied by experiment. Thermoelectric generation device was designed and radiator was optimized in accordance with the structure feature of heat dissipation holes. The output power and conversion efficiency of thermoelectric generators were tested. The results show that application of semiconductor thermoelectric generation in aluminum reduction is feasible which puts forward a new approach for energy-saving of aluminum reduction.

关 键 词：铝电解 余热利用 温差发电 磁场影响 

分 类 号：TM913[电气工程—电力电子与电力传动]