吉林大学学报(工学版) ›› 2004, Vol. ›› Issue (1): 107-111.

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Underground temperature restoration characteristics and enhancement heat transfer in geothermal energy utilization

GAO Qing, YU Ming, QIAO Guang, LI Ming, BAI Jin-yu   

  1. Dept of Thermal Energy Engineering, Jilin University, Changchun 130025, China
  • Received:2003-03-04 Online:2004-01-01

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Abstract: In ground source heat pump (GSHP) of geothermal energy utilization system,a concept of intermittent process (GSHP on or off) was proposed to restore underground temperature and compensate insufficient soil and rock heat transfer.The intermittence helps full diffusion of terrestrial heat to promote temperature uniformity and boost underground heat transfer load.Thereby,the number of heat transfer well in GSHP system can be minimized because of better working condition of GSHP.

Key words: geothermal energy utilization, ground source heat pump, intermittent process, ground temperature restoration

CLC Number: 

  • TK521.3
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