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Numerical Simulation Study on Geothermal Field of Ground Water Heat Pump System and Solar Assisted Heat Source System
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College of Construction Engineering, Jilin University,College of Construction Engineering, Jilin University,College of Construction Engineering, Jilin University,College of Construction Engineering, Jilin University,Jilin University College of Construction Engineering

Clc Number:

TU832

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    Abstract:

    Numerical simulation study on geothermal field of ground water heat pump system is of great significance to the development and utilization of shallow geothermal energy. By building hydro-thermal coupling model of ground water heat pump system by TOUGH2, the change trend of geothermal field and the temperature change of pumping-recharging wells in the study area for years are simulated. The results show that a large amount of cold accumulation appeared in some component parts of ground water heat pump system after 10 years’ operation, which affects heating temperature. Based on the above results and combined with the field site conditions, the solar assisted heat source system is adopted for the system strengthening design aiming at the cold accumulation, the change trend of geothermal field for years in the strengthened system is simulated, and the results show that the solar assisted heat source system can effectively improve the heating temperature.

    Reference
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History
  • Received:September 28,2017
  • Revised:November 29,2017
  • Adopted:November 29,2017
  • Online: February 27,2018
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