›› 2012, Vol. 42 ›› Issue (05): 1179-1184.

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Effect of groundwater seepage on energy dynamic storage control of underground heat exchanger

JIANG Yan1, GAO Qing1,2, LI Ming1,2, WANG Li-hua1   

  1. 1. Department of Thermal Energy Engineering, Jilin University, Changchun 130022, China;
    2. State Key Laboratory of Automotive Simulation and control, Jilin University, Changchun 130022, China
  • Received:2011-06-05 Online:2012-09-01 Published:2012-09-01

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Abstract: For the underground energy storage system in the region with strong groundwater seepage, a new offset load control mode was proposed based on a large-scale numerical model of multi-heat source. Applying the dual control of the load magnitude and the temperature potential, it was possible to enhance the heat transfer efficiency of the underground energy storage system and the energy consevation capability of the energy storage region. The analysis demonstrated that at the condition of same energy input, the offset step-load control mode is superior to the traditional ring-load control mode in the capacity of energy storage and conservation. The study on the offset dynamic energy storage intermittence showed, short intermittence is superior to long intermittence in the energy storage magnitude, the average temperature rise and the maximal temperature to enhance the energy storage, diffusion and conservation in the pipe burying region.

Key words: thermal energy engineering, earth energy utilization, underground energy storage, groundwater seepage, dynamic control, offset load

CLC Number: 

  • TK521
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