Backfill material will affect the underground heat exchange and the installation costs.
地下换热器钻孔回填材料的性能直接影响着地下换热效果和地源热泵的初期投资。
参考来源 - 地埋管地源热泵回填材料实验研究The heat flux is calculated at different parameters such as inlet flow velocity, inlet water temperature, tube deepness, radius and material of U-tube, backfill material, silo diameter and distance of U-tube leg center.
其次,本文通过对不同的进口流速、进口温度、埋管深度、U型管内径和管材、回填材料、竖井直径和管腿中心距时的热流量计算,得到了大量的有助于地源热泵工程设计的数据和规律,并提出了一些工程上的建议。
参考来源 - U型管地埋换热器冬季传热性能的数值模拟与分析·2,447,543篇论文数据，部分数据来源于NoteExpress
An analysis study was conducted on the strength and safety of the backfill material based on the engineering mechanics.
并基于工程力学对充填体强度及其安全性进行了分析研究。
According to the research, the natural graded gravel is the best backfill material of graded crushed stone, grit, lime stabilized soil and rock chips.
研究表明，在连续级配碎石、砂砾、石灰稳定土、石屑几种回填材料中以自然级配砂砾石为最佳台背回填材料。
This paper studied the mechanical properties, expansion and contraction and road performance of backfill material made by waste gypsum from TiO 2 production and fly ash.
通过对钛石膏-粉煤灰复合路基回填材料的物理力学性能、胀缩性及路用工程性能的试验研究，探索了钛石膏-粉煤灰回填材料的工程性质和性能。
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