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.