| 摘要: |
| 为了解决太阳热能发电器件碱金属热电转换器的性能评价问题,从热化学角度定义碱金属钠蒸汽饱和状态和过热状态,提出4个通用的性能评价参数:循环热效率、热电转换效率、实际总效率和电功增加率,并对单管碱金属热电转换器装置的性能进行测试和分析,发现它的循环热效率可达到卡诺循环效率的99%,可与斯特林热机相匹敌,并且在923~1073K内热电转换效率都高于 89%。 |
| 关键词: 碱金属热电转换器 太阳热能 发电 热电转换效率 |
| DOI： |
| 投稿时间：2010-01-18修订日期：2010-03-18 |
| 基金项目:广西科学基金项目(No.0731012)资助。 |
|
| Assessment with Four Parameters on Performance of Alkali Metal Thermoelectric Converter |
|
LI Qing, ZHONG Shui-ku
|
| (College of Physics Science and Technology, Guangxi University, Nanning, Guangxi, 530004, China) |
| Abstract: |
| Alkali Metal Thermoelectric Converter (AMTEC) is a solar thermal power generation device. Nowadays, there are two devices in different ways of working.In order to compare their performances, according to the thermo-chemical principles, the concept of hot saturation state of sodium vapor is introduced to the circulatory system. Then there are four common performance parameters found, such as cycle thermal efficiency, thermal-to-electronic efficiency, actual overall efficiency and the increase rate of output power.The performance parameters of a single tube AMTEC device are tested.As a result, its cycle thermal efficiency is as high as 99% of Carnot cycle efficiency and thermal-to-electronic efficiency is above 89% between 923 and 1073. Therefore, AMTEC is the same as another kind of Stirling heat engines. |
| Key words: AMTEC solar thermal power generation thermal-to-electronic efficiency |
