太阳能温差发电片底部阴影区的补偿设计与性能测试
在利用聚光器进行温差发电时,光线由于受发电部分遮挡,底部会产生一定的阴影区,阴影区域的存在使整体的输出功率不能达到最佳,因此,为进一步提高整体输出功率,该文以抛物式聚光板为例进行2种类型的补偿设计,即平面板式和抛物式。通过一定的数学模型,在获得阴影区域的相关参数基础上进行分析,得到2种补偿类型的最优补偿尺寸、放置位置及角度参数。并以平面板式补偿参数为例,采用Tracepro软件获取相关数据由MATLAB运行,分析了当补偿尺寸、放置角度等参数有偏差时对补偿效果的影响,验证了通过模型分析建立的最优补偿参数的正确性。在2种不同类型的补偿方式模拟中,抛物式补偿效果较优。最后,试验结果表明经过补偿后温差...
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| Published in | 农业工程学报 Vol. 32; no. 15; pp. 187 - 196 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
佳木斯大学机械工程学院,佳木斯154007
2016
东北农业大学电气与信息学院,哈尔滨,150030%东北农业大学电气与信息学院,哈尔滨150030 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-6819 |
| DOI | 10.11975/j.issn.1002-6819.2016.15.026 |
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| Summary: | 在利用聚光器进行温差发电时,光线由于受发电部分遮挡,底部会产生一定的阴影区,阴影区域的存在使整体的输出功率不能达到最佳,因此,为进一步提高整体输出功率,该文以抛物式聚光板为例进行2种类型的补偿设计,即平面板式和抛物式。通过一定的数学模型,在获得阴影区域的相关参数基础上进行分析,得到2种补偿类型的最优补偿尺寸、放置位置及角度参数。并以平面板式补偿参数为例,采用Tracepro软件获取相关数据由MATLAB运行,分析了当补偿尺寸、放置角度等参数有偏差时对补偿效果的影响,验证了通过模型分析建立的最优补偿参数的正确性。在2种不同类型的补偿方式模拟中,抛物式补偿效果较优。最后,试验结果表明经过补偿后温差发电片热端温度有所提高,经抛物式补偿热端温度的变化范围为315.14～357.46 K,平面板式补偿后热端温度的变化范围为312.6～453.407 5 K,而无补偿时热端温度变化范围为309.78～448.89 K,而冷端温度在补偿前后三者基本保持不变,在285.12～290.47 K范围内变化。在09：00-14：00测试时间段内,没有补偿时系统输出的功率范围为20.05～28.94 W,经平面板式补偿后输出功率提高至20.36～29.78 W的范围,经抛物式补偿后输出功率提高至21.04～30.35 W的范围。试验结果表明相较于平面板式补偿抛物式补偿的效果较优,且对阴影区域补偿后可以进一步的提高整体输出功率。 |
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| Bibliography: | 11-2047/S solar energy; design; power generation; bottom shadow; compensation; parabolic condenser plate; out power When using the principle of collecting light to produce thermoelectric power, some lights can not arrive condenser plate due to the fact that light travels in straight line and some are blocked by the battery plate, so the bottom of the battery plate produces shadow area, resulting in the overall output power decreasing. In order to improve the overall output power, based on the example of the parabolic condenser plate, this paper proposed the planar type and parabolic type design to make up the shadow area. Based on the construction model, the parameters of shadow area were acquired, and thus the optimal compensation size and setting angle of planar and parabolic reflector were obtained. After that, the compensation design of planar and parabolic reflector was made. The best solution of planar compensation was as follows. The size of 2 planar reflectors was 2 times the width of shadow region, the |
| ISSN: | 1002-6819 |
| DOI: | 10.11975/j.issn.1002-6819.2016.15.026 |