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针对道路集热蓄能融雪化冰过程进行分析,建立地能利用热泵循环道路融雪化冰基本过程模型,开展数值计算分析。重点探讨降雪和融雪过程地源热泵运行和地下换热过程的基本性能,以及降雪量、气候环境温度、地下初始温度的影响规律。分析表明,常规降雪量的道路融雪平均热耗率为250 W/m2左右,热泵系统性能指数COP维持在4以上。地下初始温度增加将对地能利用热泵循环效率带来显著的提升空间,表明太阳能路面集热和季节性地下蓄能技术具有巨大潜力。
According to the analysis of the ice accumulation process of snow accumulation and accumulation in road, the basic process model of ice melting and snow melting using heat pump circulation road can be established and the numerical calculation and analysis can be carried out. The basic performance of ground-source heat pump operation and underground heat exchange during snowfall and snowmelt process, as well as the influence laws of snowfall, climate temperature and underground initial temperature are mainly discussed. The analysis shows that the average snowmelt snowfall average heat consumption is about 250 W / m2 and the COP of the heat pump system is above 4. Increasing the initial underground temperature will have a significant room for improvement in heat pump cycle efficiency, indicating great potential for solar road surface heat harvesting and seasonal underground storage technology.