中深层地埋管地热供热系统长期取热性能评价与经济性分析
摘要：使用开源数值模拟软件OpenGeoSys建立了中深层地埋管换热器三维数值模型，探究了不同钻井深度下的中深层地埋管换热器长期取热性能并进行了系统经济性分析。结果表明：随着中深层套管式地埋管换热器钻井深度的增加，其取热能力明显提升，但与此同时初投资与运行成本也将增加；综合考虑系统初投资及耦合热泵和循环水泵运行成本，在给定参数条件下，钻井深度为2 600 m的中深层地埋管地热供热系统具有最低的平均能源成本，系统投资回收期为10 a左右。
关键词：中深层地埋管换热器地热供热系统取热性能数值模拟经济性分析投资回收期
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[2] 王沣浩，蔡皖龙，王铭，等.地热能供热技术研究现状及展望[J].制冷学报，2021,42(1):14- 22.
[3] 邓杰文，魏庆芃，张辉，等.中深层地热源热泵供暖系统能耗和能效实测分析[J].暖通空调，2017,47(8):150- 154.
[4] 李骥，徐伟，李建峰，等.中深层地埋管供热技术综述及工程实测分析[J].暖通空调，2020,50(8):35- 39.
[5] LUO Y Q,XU G Z,ZHANG S C,et al.Heat extraction and recover of deep borehole heat exchanger:negotiating with intermittent operation mode under complex geological conditions[J].Energy,2022,241:122510.
[6] PAN A Q,LU L,CUI P,et al.A new analytical heat transfer model for deep borehole heat exchangers with coaxial tubes[J].International journal of heat and mass transfer,2019,141:1056- 1065.
[7] FANG L,DIAO N R,SHAO Z K,et al.A computationally efficient numerical model for heat transfer simulation of deep borehole heat exchangers[J].Energy and buildings,2018,167:79- 88.
[8] LI C,GUAN Y L,JIANG C,et al.Numerical study on the heat transfer,extraction,and storage in a deep-buried pipe[J].Renewable energy,2020,152:1055- 1066.
[9] 任战利，刘润川，任文波，等.渭河盆地地温场分布规律及其控制因素[J].地质学报，2020,94(7):1938- 1949.
[10] 孔彦龙，黄永辉，郑天元，等.地热能可持续开发利用的数值模拟软件OpenGeoSys:原理与应用[J].地学前缘，2020,27(1):170- 177.
[11] DIERSCH H J G,BAUER D,HEIDEMANN W,et al.Finite element modeling of borehole heat exchanger systems:part 1.fundamentals[J].Computers & geosciences,2011,37(8):1122- 1135.
[12] CAI W L,WANG F H,CHEN S,et al.Analysis of heat extraction performance and long-term sustainability for multiple deep borehole heat exchanger array:a project-based study[J].Applied energy,2021,289:116590.
[13] CHEN C F,SHAO H B,NAUMOV D,et al.Numerical investigation on the performance,sustainability,and efficiency of the deep borehole heat exchanger system for building heating[J].Geothermal energy,2019,7(1):1- 26.
[14] CHOI W J,KIKUMOTO H,OOKA R.Critical comparison between thermal performance test (TPT) and thermal response test (TRT):differences in heat transfer process and extractable information[J].Energy conversion and management,2019,199:111967.
[15] 姜静华，高远，张育平，等.中深层套管式地埋管换热器取热性能研究及经济性分析[J].西安建筑科技大学学报，2021,53(6):853- 860.
[16] 左婷婷，李祥立，王宗山.严寒地区中深层双U形地埋管热泵系统的应用分析[J].暖通空调，2021,51(12):119- 123.
[17] PHILIPP H,OLAF K,UWE-JENS G,et al.A numerical study on the sustainability and efficiency of borehole heat exchanger coupled ground source heat pump systems[J].Applied thermal engineering,2016,100:421- 433.
[18] 赵琴，杨小林，严敬.工程流体力学[M].5版.重庆：重庆大学出版社，2018:65- 68.
[19] SHEA R P,RAMGOLAM Y K.Applied levelized cost of electricity for energy technologies in a small island developing state:a case study in Mauritius[J].Renewable energy,2019,132:1415- 1424.
[20] 李元林.武汉地区住宅建筑屋面节能经济评价研究[D].武汉：武汉轻工大学，2016:49- 53.
[21] 孙玉芳，郭树荣.新建节能建筑全寿命周期的成本分析[J].建筑经济，2018,39(4):117- 120.
[22] 张德容，鲍炤.财务管理学[M].2版.南京：南京大学出版社，2021:25- 33.
Evaluation and economic analysis of long-term heat extraction performance of medium and deep buried pipe geothermal heating systems
Abstract: In this paper, the open-source simulation software OpenGeoSys is used to establish a three-dimensional numerical model of medium and deep buried pipe heat exchanger(DBHE). Then the long-term heat extraction performance and economic analysis of the DBHE with different drilling depths are investigated. The results show that with the increase of the drilling depth of medium and deep casing buried pipe heat exchanger, its heat extraction performance is significantly improved, along with higher initial investment and operating costs. Considering the system initial investment and electricity consumption of heat pump and circulation pump, the medium and deep buried pipe geothermal heating system with 2 600 m drilling depth has the lowest average energy cost under the given condition, and the payback period of this system is around 10 years.
Keywords: medium and deep buried pipe heat exchanger; geothermal heating system; heat extraction performance; numerical simulation; economic analysis; payback period;
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