地下蓄能体多孔介质传热及其热湿迁移分析

Theory analysis on heat transfer and porosity of underground thermal energy storages(UTES)

蓄能技术是实现能源可再生和高效利用的一个有效途径。能量通过短期或长期蓄存,提高其综合利用率和实现能源的实时补充。地下蓄能过程是一个受岩土特征影响的复杂多变的传热过程。着重论述地下蓄能技术发展状况和面临的研究问题,并通过模型分析和模拟计算对多孔特征下蓄能体传热作用进行了分析和探讨,考察了几种典型工况下的温度分布。

Energy storage technologies facilitate the efficient utilization of renewable energy sources and energy conservation. The energy sources can be used more effectively through a short and/or long term of energy storage. Underground thermal energy storage （UTES） process is a complicated unsteady heat transfer which effected by the features of underground. The progress of UTES and the basic problems for development in the future, the characteristics and performance of the unsteady heat transfer in a complex underground environment were summarized. The effect of porosity features on heat transfer was analyzed by several typical water speed. The theory investigation on UTES will facilitate the application of UTES worldwide.