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

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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.