Experiments performed, which investigated the suitability of Molybdenum electrodes, planar converter with 0.5-mm inter-electrode gap for low temperature, energy conversion applications. Results confirmed that for the performance of the present converter is superior to that with a tungsten emitter, when operated at near same conditions. The largest difference occurred at and at which the maximum electric power density (3.0 ) is 70% higher than that of the converter with a W emitter, at more than double the output voltage (0.43 vs. 0.21 V) and at lower cesium pressure (∼105 Pa vs. 245 Pa). Differences in the maximum electric power density of 25% and 50% occurred at and and respectively, and consistently at lower cesium pressure and higher output voltage, which are major advantages for practical applications. The measured electric power density of the present converter of ∼3.22 occurred at at slightly higher output voltage (0.49 V), and (241 Pa), and at an estimated conversion efficiency of 12.74%.
Experimental investigation of a thermionic converter with Molybdenum electrodes for low temperature applications
Space Technology and Applications International Forum - 2001 ; 2001 ; Albuquerque, New Mexico
AIP Conference Proceedings ; 552 , 1 ; 1142-1151
2001-02-02
10 pages
Conference paper
Electronic Resource
English
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