| 钾工质碱金属热电直接发电器件特性评价 |
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| 引用本文： | 张来福,倪秋芽,童建忠.钾工质碱金属热电直接发电器件特性评价[J].中国电机工程学报,2003,23(10):175-179. |
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| 作者姓名： | 张来福 倪秋芽 童建忠 |
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| 作者单位： | 1. 太原师范学院,山西,太原,030001
2. 中国科学院电工研究所,北京,100080 |
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| 摘 要： | 对钾工质碱金属热电直接发电器件(K-AMTEC)的电特性和力能特性进行了分析计算，并与采用钠工质的碱金属热电直接发电器件(Na-AMTEC，)进行了比较。计算结果表明，存在一个电流密度的阈值，当电极电流密度大于此值时，无论是输出电压、电极功率密度还是热电转换效率，K—AMTEC都明显优于Na—AMTEC。在热力学循环的工作温度分别为T1=473．15K、T2=1123．15K的场合，K-AMTEC的最大电极功率密度可达2．01W／cm^2，对应的热电转换效率可达30％，最大热电转换效率可达39％。
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| 关 键 词： | 热电直接发电装置 钾工质 碱金属热电直接发电器件 特性评价 电流密度 |
| 文章编号： | 0258-8013(2003)10-0175-05 |
| 修稿时间： | 2003年3月5日 |
EVALUATION OF CHARACTERISTICS OF AMTEC WITH POTASSIUM WORKING FLUID |
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| ZHANG Lai-fu,NI Qiu-ya,TONG Jian-zhong.EVALUATION OF CHARACTERISTICS OF AMTEC WITH POTASSIUM WORKING FLUID[J].Proceedings of the CSEE,2003,23(10):175-179. |
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| Authors: | ZHANG Lai-fu NI Qiu-ya TONG Jian-zhong |
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| Affiliation: | ZHANG Lai-fu1,NI Qiu-ya2,TONG Jian-zhong2 |
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| Abstract: | The electrical and energetic characteristics of AMTEC with potassium working fluid (K-AMTEC) are calculated and compared with those of AMTEC with sodium working fluid (Na-AMTEC). It is indicated that K-AMTEC is better than Na-AMTEC obviously in output voltage, electrode power density and thermal-to-electric converting efficiency when electrode electric current density is above some eigen-value. When the working temperature T2 is equal to 1123.15K and T1 473.15K, the maximum electrode power density of K-AMTEC can be above 2.01 W/cm2, corresponding thermal-to-electric converting efficiency being 30%, the maximum thermal-to-electric converting efficiency reaching 39%. |
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| Keywords: | Alkali metal thermal to electric converter (AMTEC) Potassium working fluid Electrical characteristic Energetic characteristic |
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