基于夹层式太阳能反射镜精确成型技术的研究

STUDY ON PRECISE SHAPING PROCESS OF THE LAMINATED SOLAR REFLECTOR

利用特殊设计的新型热弯模具制备聚光系统专用夹层式反射镜组件的高精度玻璃背板,再与1.1 mm高强度化学钢化银镜玻璃层合,制备得到高精度聚光系统专用夹层式太阳能反射镜。研究结果表明,利用镂空式快速热弯模具可缩短玻璃背板精确成型的时间;通过对热弯工艺的优化,可提高玻璃背板的成型精度,满足太阳能集热系统对聚焦光斑的要求,提高夹层式反射镜的集热性能;采用1.1 mm高强度化学钢化超薄银镜玻璃,在保证反射率为(93.2±0.3)%的基础上,表面压应力值达到(583±20)MPa,应力层深度超过27μm,可使反射镜组件经受冰雹、风沙等恶劣环境的影响。

Study on the glass bending process was described, which meets the focal spot of the solar collector system and further improve the collector performance of the reflector. The laminated solar reflector withsand the impact of hail, wind and other harsh environments with thel.lmm chemical tempered mirror which solar reflectance is （0.932±0.003）%, surface compressive stress is （583 ± 20）MPa and depth of stress layer is 27 μm.