Heat-collecting properties of asphalt pavement as solar collector by three-dimensional unsteady model

Abstract: Using asphalt pavement as a solar collector is a technology of increasing interest in China. Researchers have pointed out that the heat quality of the coolant medium needed further investigation for inter-seasonal storage, though the energy potential of an asphalt solar collector was considerable. In this paper, a three-dimensional unsteady model is developed to investigate the heat-collecting properties of asphalt solar collector at typical Chinese summer time. The temperature rise of outlet water (ΔT) is used as the indicator of heat quality. The results from a big-scale slab of 4 m × 4 m show that ΔT reaches over than 10°C, while the asphalt pavement is cooled down effectively. In addition, the higher the ambient temperature is, the better the heat-collecting properties of asphalt solar collector achieves. It can be concluded that the heat-collecting properties of asphalt solar collector are good enough to provide high-quality heat under certain conditions.

Keywords: Asphalt pavement, Solar collector, Heat-collecting properties, Three-dimensional unsteady model, Quality of collected heat

B. Li, S.P. Wu, Y. Xiao* and P. Pan, Investigation of heat-collecting properties of asphalt pavement as solar collector by a three-dimensional unsteady model, Materials Research Innovations, Volume 19, Issue S1 (April, 2015), pp. S1-172-S1-176. IF=0.473, Open Access.

About Yue

An Associate Professor from State Key Lab of Silicate Materials for Architectures in Wuhan University of Technology, China since January 2014. Received PhD degree in Road and Railway Engineering in 2013 from Delft University of Technology in the Netherlands. His research interests are on asphalt pavement surfacing, road and pavement materials, asphalt pavement design.
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