发光学报2025，Vol.46Issue(6)：1129-1138,10.DOI:10.37188/CJL.20250040
一种利用光子化学势增强被动辐射冷却的理论模型
A Theoretical Model for Enhanced Passive Radiative Cooling by Utilizing Photon Chemical Potential
摘要
Abstract
Passive radiative cooling has garnered significant attention due to its potential in energy conservation and environmental regulation.However,the cooling power of passive radiative cooling is inherently limited by Planck's law.Recent research found that positive photon chemical potential has the potential to enhance radiation power,albeit it necessitates an active energy input.This study proposes a theoretical model integrating a heat engine and a thermal radiation diode(TRD)that can passively achieve positive photon chemical potential,thereby enhanc-ing radiative cooling power.The results demonstrate that the integrated system of TRD and thermoelectric generator(TEG)can effectively improve cooling power.Theoretical results indicate that the TRD-Carnot engine coupled sys-tem has the potential to achieve a peak radiation power density of 606.3 W/m2 when the Carnot engine operates at 300 K(hot reservoir)and 280 K(cold reservoir).The peak radiation power density has the potential to exceed the ideal blackbody radiation density at 300 K,which is 459 W/m2.This study theoretically confirms that the synergistic effect between TRD and heat engine provides a novel approach for enhancing radiative cooling performance.关键词
光子化学势/热辐射二极管/电致发光冷却/被动辐射冷却Key words
photon chemical potential/thermoradiative diodes/electroluminescence cooling/passive radiative cooling分类
物理学引用本文复制引用
张学志,李炜..一种利用光子化学势增强被动辐射冷却的理论模型[J].发光学报,2025,46(6):1129-1138,10.基金项目
国家自然科学基金(62134009,62121005) Supported by National Natural Science Foundation of China(62134009,62121005) （62134009,62121005）
