基于热电的散料能量收割装置性能分析研究  

Performance Analysis of Solid Bulk Energy Harvesting Device Based on Thermoelectricity

作　　者：周晨捷 司天誉 程志龙 王秋旺[1] ZHOU Chenjie;SI Tianyu;CHENG Zhilong;WANG Qiuwang(Key Laboratory of Thermo-Fluid Science and Engineering,Ministry of Education,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]热流科学与工程教育部重点实验室,西安交通大学能源与动力工程学院,西安710049

出　　处：《工程热物理学报》2024年第12期3783-3790,共8页Journal of Engineering Thermophysics

基　　金：国家自然科学基金创新研究群体科学基金(No.51721004)。

摘　　要：自然界存在着大量固体散料,在太阳的辐照下固体散料蕴含大量热量。本文设计了一种基于热电的固体散料能量收割装置,并建立了一维非稳态相变控温-热电发电模型,分析了该装置在沙漠和月球的运行情况,对比了不同初始温度、相变材料种类和相变层厚度对装置输出功率的影响。经过计算,该装置在沙漠日平均功率最高可达1.47 W·m^(-2),在月球日平均功率最高可达14.76 W·m^(-2),该装置利用了昼夜温度波动,能够丰富极端自然条件下的能量来源方式。The surface of planet exists a substantial amount of solid granular materials(SGs)that inherently contain significant thermal energy under solar irradiation.This paper introduces a solid granular energy harvesting device(SGEHD)founded on the principles of thermoelectricity.Ad-ditionally,a one-dimensional unsteady-state phase-change temperature control and thermoelectric power generation model is established to calculate the operational performance of SGEHD in desert and lunar environments.Furthermore,a comparative analysis is conducted to assess the impact of different initial temperatures,phase-change materials,and phase-change layer thicknesses on the de-vice output power.Through computational simulations,SGEHD demonstrates a peak daily average power of 1.47 W·m^(-2) in desert and 14.76 W·m^(-2) on the lunar surface.This device takes advantage of the diurnal temperature fuctuation which representing a promising future of diversifying energy sources in extreme environmental conditions.

关 键 词：能量收割 温差发电 相变材料 热焓法 

分 类 号：TK123[动力工程及工程热物理—工程热物理]