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基于无限长线热源模型和负荷叠加原理,建立了竖直地埋管动态负荷下换热特性二维解析计算模型,预测了地埋管全年运行进、出口流体温度及周围岩土温度的分布,与已建立的地埋管全尺寸三维数值计算模型的计算结果进行了比较。结果表明,两种模型的计算结果基本吻合。
Based on infinite long-term heat source model and load superposition principle, a two-dimensional analytical model of heat transfer characteristics of vertical buried pipe under dynamic load was established. The distribution of temperature of ingress and egress fluid and temperature of surrounding rock and soil was predicted. The calculated results of the full-scale three-dimensional numerical model of buried pipe are compared. The results show that the calculated results of the two models basically agree.