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| EXPERIMENTAL STUDY OF PARTICLES CLOGGING IN GROUND SOURCE HEAT PUMP |
| ZHAO Jun1，2，LIU Quansheng1，ZHANG Chengyuan1 |
(1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. Gansu Provincial Transportation Planning，Survey and Design Institute Co.，Ltd.，
Lanzhou，Gansu 730030，China) |
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Abstract With the physical jam phenomenon in water source heat pump injection process as research object，the transportation and deposition processes of suspension particles in porous media are simulated by the self-development sand clogging equipment. In the test，the glass bead particle and gravel particle are taken as the porous media and the alumina is taken as the suspension particle. The flow velocity is controlled from 20 to 200 cm/min. The relationships between water pressure and flow velocity when suspension particles are subsided in glass bead and gravel particles are studied respectively. And the depositional mechanisms for the two different media are analyzed. At the same time，the relationships between relative permeability and time under the conditions of same velocity and different concentrations of suspended particles in glass bead medium are researched. In the end，the permeability coefficient attenuation model is given and it is effective to predict the decrease of permeability coefficient.
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Received: 02 August 2011
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| [1] 何满潮，李启民. 地热资源在移民小区可持续发展应用研究[J]. 太阳能学报，2005，25(2)：223–226.(HE Manchao，LI Qimin. Research of sustainable development of geothermal resources in immigrant communities[J]. Acta Energiae Solaris Sinica，2005，25(2)：223–226.(in Chinese))
[2] 何满潮，刘 斌，姚磊华，等. 地热水对井回灌渗流场理论研究[J]. 中国矿业大学学报，2004，33(3)：245–248.(HE Manchao，LIU Bin，YAO Leihua，et al. Study on theory of seepage field a round geothemal production-reinfection doublets wells[J]. Journal of China University of Mining and Technology，2004，33(3)：245–248.(in Chinese))
[3] 何满潮，刘 斌，姚磊华，等. 地下热水回灌过程中渗透系数研究[J]. 吉林大学学报：地球科学版，2002，32(4)：374–377.(HE Manchao，LIU Bin，YAO Leihua，et al. Study on hydraulic conductivity during geothermal reinjection[J]. Journal of Jilin University：Earth Science，2002，32(4)：374–377.(in Chinese))
[4] 邬小波. 地下含水层储能和地下水源热泵系统中地下水回路与回灌技术现状[J]. 暖通空调，2004，31(1)：19–22.(WU Xiaobo. Development of ground water loop for ATES and ground water source heat pump systems[J]. Heating and Ventilating Engineering，2004，31(1)：19–22.(in Chinese))
[5] SILLIMAN S E. Particle transport through two-dimensional，saturated porous media：influence of physical structure of the medium[J]. Journal of Hydrology，1995，167(5)：79–98.
[6] SILLIMAN S E. The importance of the third dimension on transport through saturated porous media：case study based on transport of particles[J]. Journal of Hydrology，1996，179(5)：181–195.
[7] MASSEI N，LACROIX M，WANG H Q，et al. Transport of particulate material and dissolved tracer in a highly permeable porous medium comparison of the transfer parameters[J]. Journal of Contaminant Hydrology，2002，57(7)：21–39.
[8] WANG H Q，LACROIX M，MASSEI N，et al. Particle transport in porous medium：determination of hydrodispersive characteristics and deposition rates[J]. Comptes Rendus de l'Academie des Sciences Series IIA Earth and Planetary Science，2000，331(11)：97–104.
[9] WANG H Q，CRAMPON N，HUBERSON S，et al. Linear graphical method for determining hydrodispersive characteristics in tracer experiments with instantaneous injection[J]. Journal of Hydrology，1987，95(11)：143–154.
[10] WERONSKI P，WALZ J Y，ELIMELECH M. Effect of depletion interactions on transport of colloidal particles in porous media[J]. Journal of Colloid and Interface Science，2003，262(6)：372–383.
[11] SANTOS A，BEDRIKOVETSKY P. A stochastic model for particulate suspension flow in porous media[J]. Transport in Porous Media，2006，62(1)：23–53.
[12] CIVAN F，KSPP R，OHEN M，et al. Alteration of permeability of fine particle processes[J]. Journal of Petroleum：Science Engineering，1989，3(1/2)：65–79. |
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2012, Vol. 31 
