防灾减灾工程学报2025，Vol.45Issue(2)：477-484,8.DOI:10.13409/j.cnki.jdpme.20231215002
桩基埋管地源热泵与空气源热泵系统对比研究
Comparative Study of Pile Foundation Ground-source Heat Pump Systems and Air-source Heat Pump Systems
摘要
Abstract
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 de-mands of ultra-low-energy buildings,a demonstration green building at the pilot site of"BeSTDR In-frastructure Hospital"was used as an example.Using Revit software,models were established for ul-tra-low-energy buildings integrated with ground-source heat pump systems with pile foundation(ener-gy 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 sys-tems.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 main-tenance 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℃,re-spectively.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 ini-tial investment cost by approximately 25%,while achieving over 30%energy-saving rate in system operation.关键词
超低能耗建筑/地源热泵系统/空气源热泵系统/能量桩/钻孔埋管Key words
ultra-low energy buildings/ground-source heat pump systems/air-source heat pump sys-tems/energy piles/borehole buried pipes分类
建筑与水利引用本文复制引用
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(2):477-484,8.基金项目
大连市"揭榜挂帅"技术攻关项目(2021JB12SN047)资助 （2021JB12SN047）
