基于液态介质的温差发电串并联实验与仿真研究

doi:10.12096/j.2096-4528.pgt.19135

发电技术 ›› 2021, Vol. 42 ›› Issue (5): 614-621.DOI: 10.12096/j.2096-4528.pgt.19135

基于液态介质的温差发电串并联实验与仿真研究

侍园园¹(), 董聪¹^,*(), 王文超², 朱行¹(), 黄永丽¹(), 丁铭¹, 杨鹏¹()

¹ 浙江科技学院能源与环境系统工程系, 浙江省杭州市 310000
² 浙江省建筑研究设计院, 浙江省杭州市 310006

收稿日期:2020-10-22 出版日期:2021-10-31 发布日期:2021-10-13
通讯作者: 董聪
作者简介:侍园园(1994), 男, 硕士研究生, 研究方向为能源与环境, 2532025703@qq.com
朱行(1994), 男, 硕士研究生, 研究方向为新能源汽车控制, 419697751@qq.com
黄永丽(1995), 女, 硕士研究生, 研究方向为新能源汽车控制, 1582942140@qq.com
杨鹏(1998), 男, 研究方向为能源与环境, 2336053251@qq.com
基金资助:
国家重点研发计划项目(2018YFB0905102);中国科学院国际伙伴计划项目(182111KYSB20200021)

Experimental and Simulation Study of Series-Parallel Thermoelectric Power Generation Model Based on Liquid Medium

Yuanyuan SHI¹(), Cong DONG¹^,*(), Wenchao WANG², Xing ZHU¹(), Yongli HUANG¹(), Ming DING¹, Peng YANG¹()

¹ Department of Energy and Environment System Engineering, Zhejiang Institute of Technology, Hangzhou 310000, Zhejiang Province, China
² Zhejiang Institute of Architecture Research and Design, Hangzhou 310006, Zhejiang Province, China

Received:2020-10-22 Published:2021-10-31 Online:2021-10-13
Contact: Cong DONG
Supported by:
National Key Research and Development Program of China(2018YFB0905102);International Partnership Program of Chinese Academy of Sciences(182111KYSB20200021)

摘要/Abstract

摘要：

温差发电的发电功率和效率不仅受到温差发电片性能和冷热两端温差的影响，在一定条件下，受其他因素的影响也较大。采用仿真分析、实验论证、理论预测与试验测试相结合的方法，详细研究了多种串并联工况对温差发电片发电效率的影响。将串并联工况分为同并异串、异并同串2种，分别从2种串并联工况研究得出结论：最大功率值的取值条件为，在低温情况下，每行串联个数相同，串联个数与并联行数相同，内外阻值相同；在不同的热端温度条件下，温差片内部热阻以及热端、冷端热阻的变化规律是影响最大功率取值的一个重要因素。研究结果对温差发电片的应用提供了理论支撑。

关键词: 温差发电, 串并联, 发电效率, 负载压力

Abstract:

The power and efficiency of thermoelectric generation are not only affected by the performance of thermoelectric generator and the temperature difference between the hot and cold ends, but also by other factors under certain conditions. Therefore, the effect of series-parallel operation on the efficiency of thermoelectric generator was studied in detail by means of simulation analysis, experimental demonstration, theoretical prediction and experimental test. The series-parallel operation is divided into two types: same series with different parallel, different series with same parallel. From the study of three series-parallel operation conditions, it is concluded that there is only one condition for the maximum power value. At low temperature, the number of series is the same as that of parallel operation, and the internal and external resistance values are the same. The internal thermal resistance and the variation of thermal resistance with hot end and cold end are important factors that influence the maximum power value. The research results provide theoretical support for the application of thermoelectric generator.

Key words: thermoelectric power generation, series-parallel, power generation efficiency, load pressure

中图分类号:

TK01
TM913

侍园园, 董聪, 王文超, 朱行, 黄永丽, 丁铭, 杨鹏. 基于液态介质的温差发电串并联实验与仿真研究[J]. 发电技术, 2021, 42(5): 614-621.

Yuanyuan SHI, Cong DONG, Wenchao WANG, Xing ZHU, Yongli HUANG, Ming DING, Peng YANG. Experimental and Simulation Study of Series-Parallel Thermoelectric Power Generation Model Based on Liquid Medium[J]. Power Generation Technology, 2021, 42(5): 614-621.

图/表 14

图1 U形管排布图

Fig.1 U-tube layout

图2 改良集热板

Fig.2 Improved collector plate

图3 温差发电实验台架 1—数显器；2—保温箱体；3—温控装置；4—电源；5—流量调节装置；6—水箱；7—水泵；8—流量计；9—溢油槽；10—承重块；11—承重板。

Fig.3 Test bench of thermoelectric power generation

表1 温差发电片性能参数

Tab. 1 Performance parameters of thermoelectric generator

温差发电片参数	数值
室温下内阻/Ω	2.5
工作电流/A	8
额定电压/V	12
热端极限温度/℃	250
塞贝克系数/(V·K^-1)	0.13

图4 温差发电实验台架实物图

Fig.4 Test bench physical diagram of thermoelectric power generation

图5 温差发电同并异串整体态势图1

Fig.5 Overall situation diagram 1 of the same parallel and different series of thermoelectric power generation

图6 温差发电同并异串整体态势图2

Fig.6 Overall situation diagram 2 of the same parallel and different series of thermoelectric power generation

图7 温差发电同并异串整体态势图3

Fig.7 Overall situation diagram 3 of the same parallel and different series of thermoelectric power generation

图8 温差发电异并同串整体态势图

Fig.8 Overall situation diagram of the same series and different parallel of thermoelectric power generation

图9 串联个数和并联行数对总内阻的影响

Fig.9 Influence of serial number and parallel lines on total internal resistance

图10 串联个数和并联行数对开路电压的影响

Fig.10 Influence of serial number and parallel lines on open circuit voltage

图11 串联个数和并联行数对电流的影响

Fig.11 Influence of serial number and parallel lines on current

图12 串联个数和并联行数对负载功率的影响

Fig.12 Influence of serial number and parallel lines on load power

图13 串联个数和并联行数对每个温差发电片功率的影响

Fig.13 Influence of serial number and parallel lines on the average power of thermoelectric cells

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基于液态介质的温差发电串并联实验与仿真研究

Experimental and Simulation Study of Series-Parallel Thermoelectric Power Generation Model Based on Liquid Medium

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