论文标题
黑体腔理想的太阳能吸收器
Blackbody-cavity Ideal Solar Absorbers
论文作者
论文摘要
频谱选择性太阳能吸收剂（SSA），将阳光收获成热量，是浓缩太阳能热系统的关键。当前使用光子晶体，超材料或CERMET的SSA设计要么具有成本效益，要么由于复杂的纳米化方法和高温下的热稳定性而具有有限的适用性。我们提出了具有几乎理想特性的可扩展制造的黑体腔吸收器设计。统一的太阳能吸收性和几乎零红外发射率使10个太阳下的停滞温度为880c。该性能超过了那些由纳米制造方法制造的最先进的SSA。这种设计依赖于传统的制造方法，例如加工，铸造和抛光。这使大规模工业应用变得容易，并且“黑体腔”功能使其快速整合到现有的集中太阳能热系统。
Spectrally selective solar absorbers (SSAs), harvesting sunlight into heat, are the key to the concentrated solar thermal systems. Current SSAs' designs using photonic crystals, metamaterials, or cermets are either cost-inefficient or have limited applicability due to complicated nanofabrication methods and poor thermal stability at high temperatures. We present a scalable-manufactured blackbody cavity solar absorber design with nearly ideal properties. The unity solar absorptivity and nearly zero infrared emissivity allow for a stagnation temperature of 880C under 10 suns. The performance surpasses those state-of-the-art SSAs manufactured by nanofabrication methods. This design relies on traditional fabricating methods, such as machining, casting, and polishing. This makes it easy for large-scale industrial applications, and the "blackbody cavity" feature enables its fast-integration to existing concentrated solar thermal systems.
