UV/VIS/NIR spectrometer for measuring optical properties of building and construction materials

凉爽的城市表面减少了城市热岛效应，节省了空调建筑的冷却能源，改善了室内外环境空气质量和舒适性，更重要的是直接为全球降温和应对全球变暖。在设计先进的建筑和建筑材料时，需要测量太阳反射率、太阳吸收率、太阳透射率和热发射率。在空调建筑的高级窗户设计中，选择允许可见光进入但拒绝近红外光的材料是很重要的。同样，具有高太阳反射率和高热发射率的建筑围护材料(屋顶和墙壁)在炎热的夏季保持凉爽，从而降低了空调需求。采用先进热致变色材料的建筑材料具有夏天反射阳光，冬天吸收阳光的好处。

Cool urban surfaces reduce urban heat islands, save cooling energy in air conditioned buildings, improve indoor and outdoors ambient air quality and comfort, and more importantly directly cool the globe and combat global warming. Measurements of solar reflectance, solar absorptance, solar transmittance, and thermal emittance are needed to design advanced buildings and construction materials. For design of advanced windows in air conditioned buildings, it is important to select materials that allow incoming visual light but reject the near infrared light. Similarly, building envelope materials (roof and walls) with high solar reflectance and high thermal emittance stay cool during hot summer days resulting in lower air conditioning demand. Building materials with advanced thermochromic materials have the benefit of reflecting sunlight in summer and absorbing it in winter.