High-Efficiency Thermophotovoltaic System That Employs an Emitter Based on a Silicon Rod-Type Photonic Crystal
High-Efficiency Thermophotovoltaic System That Employs an Emitter Based on a Silicon Rod-Type Photonic Crystal
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采用基于硅棒型光子晶体的发射器的高效热光伏系统
DOI：
10.1021/acsphotonics.9b00984
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发表时间：
2019
期刊：
影响因子：
7
通讯作者：
Noda Susumu
中科院分区：
文献类型：
--
作者：
Suemitsu Masahiro;Asano Takashi;Inoue Takuya;Noda Susumu
热光伏系统原则上能够利用通常被认为是浪费的能量。然而，用常规设计很难控制高效率所需的热发射器的波长选择性。在这里，我们设计了一种由发射光谱相对较窄的硅棒作为热发射体和禁带宽度为1.76μm的光伏电池组成的热光电系统，并验证了其高效发电。通过精确测量进入发射极的热流密度、发射极温度和光伏电池的电输出功率，发现在发射极温度为1338K时，实际系统效率(输出功率与输入热流之比)为11.2%，输出功率密度为0.368 W/cm~2。获得的效率相对较高，即是先前报告的记录值(6.8%)的1.65倍。效率的进一步提高可能会导致利用燃烧热的分布式能源供应的发展。
Thermophotovoltaic systems in principle enable utilization of heat that is usually regarded as wasted energy. However, the wavelength selectivity of the thermal emitter required for high efficiencies is difficult to control with conventional designs. Here, we design a thermophotovoltaic system, comprising silicon rods as thermal emitter with a relatively narrow emission spectrum and photovoltaic cells with a band gap corresponding to 1.76 μm, and verify efficient power generation. By accurately measuring the heat flux that enters the emitter, the emitter temperature, and the electrical output power of the photovoltaic cells, we find that the actual system efficiency (ratio of output power to ingoing heat flux) is 11.2% at an emitter temperature of 1338 K and the output power density footprint is 0.368 W/cm2. The obtained efficiency is relatively high, i.e., 1.65 times that of the previously reported record value (6.8%). Further efficiency improvements may lead to development of distributed energy supplies using combustion heat.
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影响因子：
1.7
作者：
M. Shimizu;A. Kohiyama;H. Yugami
通讯作者：
M. Shimizu;A. Kohiyama;H. Yugami
在太阳能热光伏系统中使用整体式立方体吸收器/发射器的单向辐射传热
DOI：
--
发表时间：
2019
期刊：
影响因子：
--
作者：
Asaka Kohiyama;Makoto Shimizu;Hiroo Yugami
通讯作者：
Hiroo Yugami
影响因子：
3.1
作者：
Dashiell, Michael W.;Beausang, John E.;Luryi, Serge
通讯作者：
Luryi, Serge
影响因子：
4
作者：
Ikeda, K.;Miyazaki, H. T.;Kitagawa, S.
通讯作者：
Kitagawa, S.