地下水源热泵砂层阻塞试验研究(II)

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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.

Key words： soil mechanics ground-source heat pump(GSHP) clogging of sand layer experimental system

Received: 25 December 2012

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https://rockmech.whrsm.ac.cn/EN/Y2013/V32/Is2/3363

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