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A platform for research: civil engineering, architecture and urbanism
Dry-type backfilling method for shaft of shallow geothermal energy ground heat exchanger
The invention discloses a shaft dry type backfilling method for a shallow geothermal energy ground heat exchanger, and belongs to a construction filling process in the field of renewable energy facility construction. The first dry type backfilling method comprises the steps that dry backfilling materials with continuous particle size distribution are used for filling a cavity between an underground pipe in a shaft and the wall of the shaft; and secondly, an electromagnetic vibrator is placed in the buried pipe, and the compactness of the backfill materials at different depths in the shaft is changed by controlling the vibration frequency of the buried pipe, so that the heat conductivity coefficient of the deep-layer backfill materials in the shaft is larger than that of the shallow-layer backfill materials of the deep-layer backfill materials. Therefore, the heat exchange performance of the buried pipe and the deep stratum is improved, the heat loss of the buried pipe is reduced, the thermal short circuit is weakened, and the heat exchange performance of a vertical buried pipe system is fully exerted.
本发明公开了一种浅层地热能地埋管换热器井筒干式回填方法，属于可再生能源设施建造领域的施工填方工艺。该干式回填方法一是使用干燥的、粒径分布连续的回填料充填井筒内地埋管与井筒壁之间的空腔；二是在地埋管内放入电磁振动器，并通过控制地埋管的振动频率改变井筒内不同深度的回填料密实度，使井筒内深层回填料导热系数大于其浅层回填料的导热系数。从而既提高地埋管与深部地层的热交换性能，降低地埋管的热量损失，又削弱热短路，充分发挥垂直地埋管系统的换热性能。
Dry-type backfilling method for shaft of shallow geothermal energy ground heat exchanger
The invention discloses a shaft dry type backfilling method for a shallow geothermal energy ground heat exchanger, and belongs to a construction filling process in the field of renewable energy facility construction. The first dry type backfilling method comprises the steps that dry backfilling materials with continuous particle size distribution are used for filling a cavity between an underground pipe in a shaft and the wall of the shaft; and secondly, an electromagnetic vibrator is placed in the buried pipe, and the compactness of the backfill materials at different depths in the shaft is changed by controlling the vibration frequency of the buried pipe, so that the heat conductivity coefficient of the deep-layer backfill materials in the shaft is larger than that of the shallow-layer backfill materials of the deep-layer backfill materials. Therefore, the heat exchange performance of the buried pipe and the deep stratum is improved, the heat loss of the buried pipe is reduced, the thermal short circuit is weakened, and the heat exchange performance of a vertical buried pipe system is fully exerted.
本发明公开了一种浅层地热能地埋管换热器井筒干式回填方法，属于可再生能源设施建造领域的施工填方工艺。该干式回填方法一是使用干燥的、粒径分布连续的回填料充填井筒内地埋管与井筒壁之间的空腔；二是在地埋管内放入电磁振动器，并通过控制地埋管的振动频率改变井筒内不同深度的回填料密实度，使井筒内深层回填料导热系数大于其浅层回填料的导热系数。从而既提高地埋管与深部地层的热交换性能，降低地埋管的热量损失，又削弱热短路，充分发挥垂直地埋管系统的换热性能。
Dry-type backfilling method for shaft of shallow geothermal energy ground heat exchanger
一种浅层地热能地埋管换热器井筒干式回填方法
WANG CHUNGUANG (author) / CUI JINSHUANG (author) / WANG JI (author) / ZHOU MENG (author) / WANG WENZHENG (author) / ZHANG WEI (author) / FAN KUNKUN (author) / SONG WEIQIANG (author) / ZHENG PENG (author) / ZHONG SHIXIN (author)
2023-04-11
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
| European Patent Office | 2023
| European Patent Office | 2015