机场跑道循环热流体法融雪除冰数值模拟

为实现机场跑道快速融雪除冰,保障机场航班的正常运转,基于COMSOL固体传热与管道传热模块对地埋管地源热泵系统进行了模拟研究.设计了4种埋管形式,从管道埋深、埋管排布形式、循环流体流速以及入口水温对供热系统进行了优化分析,提出用于表征换热均匀性的参数温度偏移系数,并将建筑垃圾引入钻孔回填材料,分析了钻孔回填材料对换热系...

Numerical Simulation of Snow Melting and Deicing on Airport Runway by Circulating Heat Fluid Method

In order to realize the rapid snow melting and deicing of airport runway and ensure the normal operation of Airport Flights, the buried pipe ground source heat pump system is simulated based on COMSOL, the module of solid heat transfer and pipeline heat transfer. Four types of buried pipes are designed and the heating system is optimized from the perspectives of pipe buried depth, buried pipe layout, circulating fluid flow rate and inlet water temperature. The parameter temperature offset coefficient used to characterize the heat exchange uniformity is proposed. The construction waste is introduced into the borehole backfill material, and the influence of borehole backfill material on the heat exchange system is analyzed. It show that the Archimedes spiral buried pipe has less materials, good temperature uniformity, small flow resistance in the flow of circulating water and convenient construction. In engineering practice, the densified spiral design can be used to improve the heat exchange efficiency of the system; After classified treatment of construction waste, it is feasible to select materials with good thermal conductivity for borehole backfilling, which can enhance heat exchange and improve foundation bearing capacity. The research results provide a reference for the application of ground source heat pump system in airport runway snow melting and deicing.