Abstract To date, there still exist 1.3 billion people worldwide lacking reliable access to electricity. Radiative cooling driving thermoelectric generator can achieve all-day reliable power generation without any energy input. But the existing devices achieve extremely low power generation. In this work, a novel radiative cooling driving thermoelectric generator is developed and it can achieve significantly greater power generation, improving by 24% in inland areas and 71% in coastal areas (compared with the existing modules). Additionally, atmospheric humidity and solar absorption have the adverse impact on power generation, while ambient temperature is the opposite. And wind speed plays a leading role on the power generation of the module. As wind speed increases to 10 m/s, the power generation of the developed module is 5 times that of the existing modules. In the following operation modeling, the developed module achieves a maximum power generation of 0.92 W/m2, 84% higher than that of the existing report. Lastly, the power generation potential of the module is estimated and the Carnot-limited efficiency with radiative cooling can theoretically be improved from 15% to 23.1%. Our developed radiative cooling driving thermoelectric generator significantly improves the all-day power generation performance and has a great application potential in off-grid areas.

中文翻译：

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实现全天发电的热电辐射冷却模块模型开发及性能评估

摘要 迄今为止，全球仍有 13 亿人缺乏可靠的电力供应。辐射冷却驱动热电发电机可实现全天可靠发电，无需任何能量输入。但现有设备的发电量极低。在这项工作中，开发了一种新型辐射冷却驱动热电发电机，它可以实现更大的发电量，内陆地区提高 24%，沿海地区提高 71%（与现有模块相比）。此外，大气湿度和太阳能吸收对发电有不利影响，而环境温度则相反。风速对组件的发电量起主导作用。随着风速增加到 10 m/s，开发模块的发电量是现有模块的5倍。在下面的运行模型中，开发的模块实现了0.92 W/m2的最大发电量，比现有报告高84%。最后，对模块的发电潜力进行了估算，理论上可以将辐射冷却的卡诺限制效率从 15% 提高到 23.1%。自主研发的辐射冷却驱动热电发电机显着提高了全天发电性能，在离网领域具有巨大的应用潜力。估计模块的发电潜力，辐射冷却的卡诺限制效率理论上可以从15%提高到23.1%。自主研发的辐射冷却驱动热电发电机显着提高了全天发电性能，在离网领域具有巨大的应用潜力。估计模块的发电潜力，理论上可以将辐射冷却的卡诺限制效率从 15% 提高到 23.1%。自主研发的辐射冷却驱动热电发电机显着提高了全天发电性能，在离网领域具有巨大的应用潜力。