EXPERIMENTAL STUDY ON GEOTECHNICAL THERMAL RESPONSE TEST OF COAXIAL BOREHOLE HEAT EXCHANGER

Guan Peng; Duan Xinsheng; Jiao Yuyong; Li Peng; Tan Fei; Zou Junpeng

doi:10.19912/j.0254-0096.tynxb.2020-0309

PDF(2267 KB)

Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (2) : 55-61. DOI: 10.19912/j.0254-0096.tynxb.2020-0309

EXPERIMENTAL STUDY ON GEOTECHNICAL THERMAL RESPONSE TEST OF COAXIAL BOREHOLE HEAT EXCHANGER

Guan Peng, Duan Xinsheng, Jiao Yuyong, Li Peng, Tan Fei, Zou Junpeng

Author information +

History +

Abstract

Geotechnical thermophysical properties are the key factors affecting the design and operation of ground source heat pump（GSHP） system. Two thermal response tests lasted 48 h were performed in two experimental coaxial borehole heat exchangers with different depths located in Hongshan District of Wuhan City, and the average fluid temperature in the annular space between inner tube and outer tube of coaxial borehole heat exchangers was measured. A simple in-situ method to obtain ground thermal properties was presented, which combines the analytical solution of borehole thermal resistance with the infinite line source model （ILSM）, according to the geometric characteristics of coaxial borehole heat exchanger. Compared with the laboratory test results, the thermal physical properties of rock and soil obtained by this method are in good agreement, which indicates that the proposed method is feasible.

Key words

ground source heat pump / heat exchanger / thermal resistance / thermal conductivity / heat capacity / thermal diffusivity / thermal response test

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Guan Peng, Duan Xinsheng, Jiao Yuyong, Li Peng, Tan Fei, Zou Junpeng. EXPERIMENTAL STUDY ON GEOTECHNICAL THERMAL RESPONSE TEST OF COAXIAL BOREHOLE HEAT EXCHANGER[J]. Acta Energiae Solaris Sinica. 2022, 43(2): 55-61 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0309

References

[1] SPITLER J D.Ground-source heat pump system research—Past, present, and future[J]. HVAC & R research, 2005, 11(2): 165-167.
[2] 周世玉. 重庆典型地层热物性及地源热泵系统运行特性 [D]. 重庆: 重庆大学, 2016.
ZHOU S Y.Thermal properties of typical formation and operation characteristics of ground source heat pump system in Chongqing[D]. Chongqing: Chongqing University, 2016.
[3] 方亮. 地源热泵系统中深层地埋管换热器的传热分析及其应用[D]. 青岛: 山东建筑大学, 2018.
FANG L.Heat transfer analysis and application of deep borehole heat exchanger in ground source heat pump system[D]. Qingdao: Shandong Jianzhu University, 2018.
[4] GEHLIN S.Thermal response test: method development and evaluation[D]. Lulea: Lulea University of Technology, 2002.
[5] KAVANAUGH S, RAFFERTY K.Geothermal heating and cooling design of ground-source heat pump systems[M]. Atlanta: ASHRAE, 2014.
[6] GÖRAN H. Ground heat storage: thermal analyses of duct storage systems[D]. Skonai: University of Lund, 1991.
[7] ARIAS-PENAS D, CASTRO-GARCÍA M P, REY-RONCO M A, et al. Determining the thermal diffusivity of the ground based on subsoil temperatures. preliminary results of an experimental geothermal borehole study[J]. Geothermics, 2015, 54: 35-42.
[8] NAGANO K, KATSURA T, TAKEDA S.Development of a design and performance prediction tool for the ground source heat pump system[J]. Applied thermal engineering, 2006, 26(14-15): 1578-1592.
[9] ZANCHINI E, LAZZARI S, PRIARONE A.Effects of flow direction and thermal short-circuiting on the performance of coaxial ground heat exchangers[J]. Renewable energy and power quality journal, 2009, 1(7): 668-675.
[10] 谢宗标. 同轴深井套管式地埋管换热器岩土热物性实验分析研究[D]. 合肥: 安徽建筑大学, 2017.
XIE Z B.Experimental analysis of geotechnical thermal properties of deep coaxial well casing buried pipe heat exchanger[D]. Hefei: Anhui Jiangzhu University, 2017.
[11] 梅新忠, 王楠, 王子珑, 等. 增强型同轴套管换热器热响应试验及换热对比分析[J]. 河北工业大学学报, 2019, 48(3): 81-85.
MEI X Z, WANG N, WANG Z L, et al.Thermal response test and comparative analysis of heat transfer in enhanced coaxial bushing heat exchanger[J]. Journal of Hebei University of Technology, 2019, 48(3): 81-85.
[12] ZARRELLA A, SCARPA M, CARLI M D.Short time-step performances of coaxial and double U-tube borehole heat exchangers: modeling and measurements[J]. HVAC & R research, 2011, 17(6): 959-976.
[13] RAYMOND J, MERIER S, NGUEN L.Designing coaxial ground heat exchangers with a thermally enhanced outer pipe[J]. Geothermal energy, 2015, 3(1): 7.
[14] GORDON D, BOLISETTI T, TING D S K, et al. Experimental and analytical investigation on pipe sizes for a coaxial borehole heat exchanger[J]. Renewable energy, 2018, 115: 946-953.
[15] GORDON D, BOLISETTI T, TING D S K, et al. Short-term fluid temperature variations in either a coaxial or U-tube borehole heat exchanger[J]. Geothermics, 2017, 67: 29-39.
[16] 龚光彩, 陈帆, 苏欢, 等. 套管式地埋管换热器设计计算方法[J]. 科技导报, 2013, 31(31): 53-56.
GONG G C, CHEN F, SU H, et al.Design calculation methods of coaxial pipe type ground heat exchanger[J]. Science and technology review, 2013, 31(31): 53-56.
[17] OH K, LEE S, PARK S, et al.Field experiment on heat exchange performance of various coaxial-type ground heat exchangers considering construction conditions[J]. Renewable energy, 2019, 144: 84-96.
[18] ACUÑA J, PALM B. Distributed thermal response tests on pipe-in-pipe borehole heat exchangers[J]. Applied energy, 2013, 109: 312-320.
[19] BEIER R A, ACUÑA J, MOGENSEN P, et al. Transient heat transfer in a coaxial borehole heat exchanger[J]. Geothermics, 2014, 51(7): 470-482.
[20] 段新胜, 顾湘, 李鹏, 等. 加热过程间断的热响应试验数据处理方法研究[J]. 太阳能学报, 2018, 39(10): 2685-2690.
DUAN X S, GU X, LI P, et al.Study on data processing method for heat response test of discontinuous heating process[J]. Acta energiae solaris sinica, 2018, 39(10): 2685-2690.
[21] KELVIN T.Mathematical and physical papers[M]. London: Cambridge University Press, 1882.
[22] INGERSOLL L R, ADLER F, PLASS H J.Theory of earth heat exchangers for the heat pump[J]. ASHRAE transactions, 1950, 56: 167-188.
[23] YOON S, KIM M J.Prediction of ground thermal diffusivity from thermal response tests[J]. Energy and buildings, 2019, 185: 239-246.
[24] SPITLER J D, GEHLIN S E A. Thermal response testing for ground source heat pump systems—an historical review[J]. Renewable and sustainable energy reviews, 2015, 50: 1125-1137.
[25] YOON S, LEE S R, KIM M J, et al.Evaluation of stainless steel pipe performance as a ground heat exchanger in ground-source heat-pump system[J]. Energy, 2016, 113: 328-337.
[26] ISOMET-PC201802-EN. Portable system for measurement of heat transfer properties of materials[EB/OL].http://www.appliedp.com.