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当前位置: 首页 > 文章 > 基于风冷聚光太阳能温差发电装置热电耦合性能分析与试验 东北农业大学学报 2016,47 (7) 82-91
Position: Home > Articles > Electrothermal coupling performance analysis and test on concentration solar thermoelectric generation device based on air-cooled Journal of Northeast Agricultural University 2016,47 (7) 82-91

基于风冷聚光太阳能温差发电装置热电耦合性能分析与试验

作  者：
王立舒;梁秋艳;杨鹏;张智文;徐子龙;那博宇
单  位：
东北农业大学电气与信息学院
关键词：
日光温室;集热;温差发电;光学模拟;ANSYS;试验
摘  要：
为改变小型日光温室常规供电方式,将太阳能聚光集热技术与温差发电技术结合,以太阳能作为热源,北方冬季气温为冷源,设计聚光集热太阳能温差发电装置。运用Trace Pro光学软件对装置模型光学仿真模拟。结果表明,该装置能达到聚光集热目的,集热板中心位置能流密度分布最高且均匀。建立热电耦合平衡方程,采用有限元分析方法对单PN结及热电模块参数模拟分析,得到温度场、电势场分布趋势图,输出功率及热电转换效率随温差变化曲线。搭建试验平台,分析风速对装置参数影响,测试全天发电性能及连续发电性能。结果表明,随风速增加,集热体温度从378.5 K下降到327 K,热端温度从360.4 K下降到302.5 K,冷端温度在风速大于4 m·s-1后变化较明显,从262.2 K下降到240 K;该装置试验期间瞬时最大输出功率为58.6 W,平均输出功率为56.7 W,6 h发电量为340.2 W·h,热电转换效率为1.1%~4.3%;连续试验10 d总发电时间52.01 h,共发电2.74k W·h,可满足小型育苗温室中育苗、照明及无线传感器用电需求。
译  名：
Electrothermal coupling performance analysis and test on concentration solar thermoelectric generation device based on air-cooled
作  者：
WANG Li-shu;LIANG Qiuyan;YANG Peng;ZHANG Zhiwen;XU Zilong;NA Boyu;School of Electrical and Information, Northeast Agricultural University;School of Mechanical Engineering, Jiamusi University;
关键词：
solar greenhouse;;heat collection;;thermoelectric generation;;optical simulation;;ANSYS;;test
摘  要：
In order to change the conventional power supply way of small greenhouse, it has been combined concentrated solar thermal technology with thermoelectric generation technology to design a concentration solar thermoelectric generation device which adopts solar energy as heat source and the northern winter air as cold source. Simulation the device model in optics software of Trace Pro, the results showed that the designed device could concentrated solar better and the energy flux density on flat panel was uniform. A comprehensive electrothermal coupling equations had established to analysis the parameters of single PN junction by ANSYS, it got the distribution trend chart of temperature field and electric potential field, and the curves of output power, conversion efficiency changing with temperature. Building test platform to analysisthe effect of wind speed to device parameters, some tests research had done to test the whole day and continuous power generation performance. The results showed that the increases of wind speed making the temperature of heat collection plate dropped from 378.5 to 327 K, the temperature of hot side dropped from360.4 to 302.5 K, the variation of cold side temperature obviously when the wind speed over 4 m · s- 1,dropped from 262.2 to 240 K. Whole day tested for the device indicated that the instantaneous maximum output power was 58.6 W, running 6 h the average power was 56.7 W, and the electric quantity was 340.2W· h. The thermoelectric conversion efficiency was between 1.1%-4.3%. Continuity test showed that the device generated electricity 52.01 h and the electric quantity was 2.74 kW · h in 10 days. The device can satisfy the needs of power supply of a small grow seedlings greenhouse, including grow seedlings lamp, LED lamp and some wireless sensor.

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