Laboratorial investigation on optical and thermal properties of cool pavement nano-coatings for urban heat island mitigation
Research Abstract
Urban Heat Island (UHI) effect causes the increasing energy consumption for building and environment cooling. Reflective coating is an effective cool pavement technology to counterbalance UHI. However, the investigation of the optical properties and their relation of colored reflective pavement coatings at full solar spectrum are still in its infancy. This paper prepared ten non-white coating samples to evaluate the optical properties and thermal performance of pigments and coatings. It was founded that color lightness is a dominant factor of visible reflectance however it does not affect the near-infrared reflectance. The coatings doped in chrome achieved reflectance around 60% and the near-infrared reflectance was as high as the white coating around 95%. The relation between lightness and visible reflectance was linear for coatings in dark and medium color while the exponential growth was shown for the coating
Research Department
Research Journal
Building and Environment
Research Member
Research Pages
231-240
Research Publisher
Elsevier
Research Rank
1
Research Vol
147
Research Website
NULL
Research Year
2019