Title :
Experimental study on electrode potential drop in liquid metal magnetohydrodynamic generator
Author :
Xu, Yuyu ; Li, Ran ; Zhao, Lingzhi ; Lin, Zuowei ; Liu, Baolin ; Li, Jian ; Peng, Yan ; Sha, Ciwen ; Wei, Wende
Author_Institution :
Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing
Abstract :
Experimental investigation of electrode potential voltage drop in liquid metal magnetohydrodynamic(LMMHD) power generator is presented in the paper. Resistance between two electrodes were measured by micro-ohmmeter with 0~20 mOmega range in different apart distance of electrodes and contact surface area. The results show that the contact resistance between liquid metal and copper electrode is very complex, it is impossible to calculate the contact resistance by a formula. As a example, the contact resistance of concave electrodes, distance of which is 30 mm, changes from 5 muOmega to 28 muOmega when the contact area varies from 100 mm2 to 800 mm2.
Keywords :
contact resistance; electric potential; electrodes; magnetohydrodynamic convertors; concave electrodes; contact resistance; contact surface area; copper electrode; distance 30 mm; electrode potential drop; liquid metal magnetohydrodynamic generator; microohmmeter; resistance 5 muohm to 28 muohm; Contact resistance; Copper; Electric resistance; Electrical resistance measurement; Electrodes; Magnetic liquids; Magnetohydrodynamic power generation; Power generation; Testing; Voltage;
Conference_Titel :
Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3826-6
Electronic_ISBN :
978-7-5062-9221-4
