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J4  2012, Vol. 46 Issue (8): 1450-1456    DOI: 10.3785/j.issn.1008-973X.2012.08.015
土木工程     
有渗流时埋管换热器传热模型
王子阳1, 张仪萍1, 战国会2, 俞亚南1
1.浙江大学 土木工程学系,浙江 杭州 310058;2.交通运输部规划研究院,北京 100028
Study on heat transfer model of underground heat exchangers
with groundwater advection
WANG Zi-yang1, ZHANG Yi-ping1, ZHAN Guo-hui2, YU Ya-nan1
1.Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China;
2.Transport Planning and Research Institute, Ministry of Transport;Beijing 100028, China
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摘要:

为研究地下水渗流对埋管换热器传热的影响,以移动热源的格林函数为基础,通过引入虚拟热汇,由叠加原理建立热渗耦合作用下的有限长线热源模型.将此模型与有渗流无限长线热源模型和无渗流有限长线热源模型作了对比,比较结果表明该模型计算有渗流时埋管换热器的传热更加合理.针对地下水渗流流速和土壤热物性等对传热影响的分析,表明地下水渗流导致土壤温度场发生变形,渗流速度越大,钻孔壁中点温度越快达到稳态,且稳态过余温度越低;土壤密度和比热越大,土壤导热系数越小,则土壤温度场变形越大.

Abstract:

In order to study the influence of groundwater advection on performance of underground heat exchangers, based on the Green’s function of moving heat source and by introducing a virtual heat sink, a finite line-source model under coupled thermal conduction and groundwater advection conditions was established through the superposition principle .Comparisons with the infinite linesource model with groundwater advection and the finite line-source model without groundwater advection indicate that the developed model is more appropriate to calculate heat transfer of underground heat exchangers with groundwater advection. The influence of groundwater flow velocity and soil thermal properties on heat transfer was analyzed. The analysis result shows that groundwater advection causes the deformation of the soil temperature field, and the greater the advection velocity is, the faster the midpoint temperature of borehole wall reaches steady state, and the lower the steady-state temperature is. It is also indicated that the soil temperature field will get larger deformation accordingly as the density and specific heat of the soil increase or its thermal conductivity decreases.

出版日期: 2012-09-23
:  TU 111  
通讯作者: 张仪萍,男,副教授.     E-mail: zhangyiping@zju.edu.cn
作者简介: 王子阳(1988—),男,硕士生,主要从事市政工程、建筑节能方向的研究.E-mail:wzyzju@163.com
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引用本文:

王子阳, 张仪萍, 战国会, 俞亚南. 有渗流时埋管换热器传热模型[J]. J4, 2012, 46(8): 1450-1456.

WANG Zi-yang, ZHANG Yi-ping, ZHAN Guo-hui, YU Ya-nan. Study on heat transfer model of underground heat exchangers
with groundwater advection. J4, 2012, 46(8): 1450-1456.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.08.015        http://www.zjujournals.com/eng/CN/Y2012/V46/I8/1450

[1] INGERSOLL L R, PLASS H J. Theory of the ground pipe heat source for the heat pump [J]. Heating Piping and Air Conditioning, 1948. 20(7): 119-122.
[2] ZENG Heyi, DIAO Nairen, FANG Zhaohong. A finite linesource model for boreholes in geothermal heat exchangers [J]. Heat Transfer Asian Research, 2002, 31(7): 558-567.
[3] MAN Yi, YANG Hongxing, DIAO Nairen, et al. A new model and analytical solutions for borehole and pile ground heat exchangers [J]. International Journal of Heat and Mass Transfer, 2010, 53(13/14): 2593-2601.
[4] 战国会,俞亚南.地源热泵有限长圆柱面和圆柱体热源模型研究[J].浙江大学学报:工学版,2011, 45(6): 1104-1107.
ZHAN Guohui, YU Yanan. Study on finite long cylindrical surface and cylinder source model of ground source heat pump [J].Journal of Zhejiang University :Engineering Science, 2011, 45(6): 1104-1107.
[5] GREEN D W, PERRY R H. Heat transfer with a flowing fluid through porous media [J]. Chemical Engineering Progress Symposium Series, 1961, 57(32): 61-68.
[6] CHIASSON A D, REES S J, SPITLER J D. A preliminary assessment of the effects of ground water flow on closedloop ground source heat pump systems [J]. ASHRAE Transactions, 2000, 106(1):380-393.
[7] ESKILSON P. Thermal analysis of heat extraction boreholes [D]. Sweden: Lund University, 1987.
[8] DIAO Nairen, Li Qinyun, FANG Zhaohong. Heat transfer in ground heat exchangers with groundwater advection [J]. International Journal of Thermal Sciences, 2004, 43(12): 1203-1211.
[9] LEE C K, LAM H N. Effects of groundwater flow direction on performance of ground heat exchanger borefield in geothermal heat pump systems using 3D finite difference method [C]∥ Proceeding of the 10th International IBPSA Conference  Building Simulation 2007. Beijing : [s. n.], 2007: 337-341.
[10] 范蕊,马最良.热渗耦合作用下地下埋管换热器的传热分析[J].暖通空调,2006, 36(2): 6-10.
FAN Rui, MA Zuiliang. Heat transfer analysis of underground heat exchangers under coupled thermal conduction and groundwater advection conditions [J]. Heating Ventilating & Air Conditioning, 2006, 36(2): 6-10.
[11] 范蕊,马最良,姚杨,等.地下水流动对地下埋管换热器影响的实验研究[J].太阳能学报.2007, 28(8): 874-880.
FAN Rui, MA Zuiliang, YAO Yang,et al. Experimental research on influence of groundwater advection on performance of GHE [J]. Acta energiae solaris sinica, 2007, 28(8): 874-880.
[12] CARSLAW H S, JAEGER J C. Conduction of heat in solids [M].2nd ed. Oxford: Clarendon Press,1986: 255-272.
[13] 胡映宁,林俊,尹向明.富水土壤地区土壤换热器换热性能的实验研究[J].太阳能学报,2009, 30(1): 5-11.
HU Yingning, LIN Jun,YIN Xiangming. Study on heat exchange performance of ground heat exchangers in the waterrich soil areas [J]. Acta energiae solaris sinica, 2009, 30(1): 5-11.

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