河海大学土木与交通学院,江苏 南京 210024
王福慧(1996—),男,硕士研究生。主要从事能源地下结构与工程方面的研究。E‑mail:3419207515@qq.com
孔纲强(1982—),男,教授,博导,博士。主要从事能源地下结构与工程方面的研究。E‑mail: gqkong1@163.com
收稿:2023-12-15,
修回:2024-01-31,
纸质出版:2025-04-28
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王福慧,孔纲强.桩基埋管地源热泵与空气源热泵系统对比研究[J].防灾减灾工程学报,2025,45(02):477-484.
WANG Fuhui,KONG Gangqiang.Comparative Study of Pile Foundation Ground‑source Heat Pump Systems and Air‑source Heat Pump Systems[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(02):477-484.
王福慧,孔纲强.桩基埋管地源热泵与空气源热泵系统对比研究[J].防灾减灾工程学报,2025,45(02):477-484. DOI: 10.13409/j.cnki.jdpme.20231215002.
WANG Fuhui,KONG Gangqiang.Comparative Study of Pile Foundation Ground‑source Heat Pump Systems and Air‑source Heat Pump Systems[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(02):477-484. DOI: 10.13409/j.cnki.jdpme.20231215002.
能量桩技术作为超低能耗建筑的技术手段之一,逐步获得工程技术人员的关注;面向超低能耗建筑采暖/制冷需求,依托“坝道工程医院”中试场地示范绿色建筑,基于Revit软件构建超低能耗建筑及桩基埋管(能量桩)、钻孔埋管地源热泵系统模型,结合TRNSYS软件分析河南平舆地区超低能耗办公建筑全年负荷需求;对比研究地源热泵系统与空气源热泵系统供给端的性能,研究源侧以及负荷侧供回水温差变化,探讨地源热泵系统运维过程中土层温度变化规律,初步分析通过能量桩替代部分钻孔埋管的可行性。研究结果表明:由桩基埋管与钻孔埋管组成的地源热泵系统相比空气源热泵系统节能率超过30%;经过一个制冷季或采暖季地埋管系统土层温度分别上升1.84 ℃或降低1.40 ℃,系统运行10年后,能量桩土层平均温度上升至17.40 ℃,地埋管土层平均温度上升至18.00 ℃,导致土层产生“热堆积”;依托工程条件下,通过建筑桩基内埋管替代部分钻孔埋管,可以节省约25%的初始投资费用,系统运行节能率超过30%。
As one of the technical solutions for ultra-low-energy buildings
energy pile technology has been attracting growing attention from engineering professionals. To address the heating/cooling demands of ultra-low-energy buildings
a demonstration green building at the pilot site of "BeSTDR Infrastructure Hospital" was used as an example. Using Revit software
models were established for ultra-low-energy buildings integrated with ground-source heat pump systems with pile foundation (energy piles) and borehole buried pipes. Combined with TRNSYS software
the annual load demands of ultra-low-energy office buildings in Pingyu
Henan Province were analyzed. A comparative study was then conducted on the supply-side performance between ground-source and air-source heat pump systems. The temperature differences between supply and return water on both the source and load sides were investigated
aiming to explore the variation patterns of soil layers during the operation and maintenance of ground-source heat pump systems. Moreover
a preliminary feasibility analysis of replacing some borehole buried pipes with energy piles was conducted. The results showed that ground-source heat pump systems composed of pile foundation and borehole buried pipes achieved an energy-saving rate of over 30% compared to the air-source heat pump systems. After a cooling or heating season
the soil layer temperature of the buried pipe systems increased by 1.84℃ or decreased by 1.40℃
respectively. After the system was in operation for 10 years
the average temperature of the soil layer of the energy pile rose to 17.40℃
and the average temperature of the soil layer of the underground pipe rose to 18.00℃
resulting in "thermal accumulation" in the soil layer. Therefore
under engineering conditions
replacing some borehole buried pipes with pile foundation buried pipes can reduce the initial investment cost by approximately 25%
while achieving over 30% energy-saving rate in system operation.
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