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| EXPERIMENTAL STUDY OF PARTICLES CLOGGING
IN SAND LAYER OF GROUND-SOURCE HEAT PUMP (II) |
| ZHAO Jun1，2，ZHANG Chengyuan3，LIU Quansheng3 |
(1. Anhui University of Science and Technology，School of Civil and Architecture Engineering，Huainan，Anhui 232001，China；2. Jiangxi Yuzhou Vocational College of Science and Technology，College of Civil Engineering，Xinyu，Jiangxi 338029，China；3. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，
Chinese Academy of Sciences，Wuhan，Hubei 430071，China) |
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Abstract A new experimentation equipment，which can provide directly observation on mechanisms of physical and biological clogging of ground-source heat pump(GSHP) in porous media，is developed. The system can observe real-timely and directly space change of obstruction with the tem observation. Two-way flow drive is adopted to simulate the recharge of underground water source heat pump system and back to the young's seepage conditions. The glass beads and gravel particles are used as porous mediums，and alkaline alumina particles are used as the suspended particles. The velocity of the fluid inside the pore is different caused by different pores through numerical simulation. From the simulation we find that in the least pore the fluid velocity is often the biggest，and in the smallest pore can clog particles most easily. The results can provide test base for solving environmental safety evaluation.
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Received: 25 December 2012
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2013, Vol. 32 
