Modeling Hydremic Solar Collection on Slab of Road and Bridge and a Feature Study

摘要

Using theory of heat transfer to analyze the progress of hydronic solar collection (HSC) on the slab of road and bridge in the summer, a numerical model was established by the finite volume method (FVM) in the numerical heat transfer. Based on computational platform of MATLAB, calculation process and program modules are given to calculate numerically. In the typical northern climate condition, the characteristic of solar collection on the pavement was studied, such as effect of velocity of fluid, effect of material of road and bridge. The results show that an attracting heat quantity can be obtained from solar collection on road and temperature of road in the summer reduces significantly. Furthermore, material of road with higher conductivity has more outstanding endothermic effect, which is similar to linear increase. At the same time, for the same structure of road and bridge, the velocity of fluid has obvious influence on the temperature of HSC. Generally, there is better influence of HSC in the lower velocity of fluid. With increasing of velocity, change of temperature gradually decreases. Obviously, rheological characteristic of HSC has important collaborative relation with store of trapezoidal change energy of underground thermal energy storage (UTES).