Theoretical Model and Simulation on Heat and Moisture Transfer in Soil around Underground Heat Exchangers
- Key words
- U-vertical underground heat exchanger (UHE); Heat and moisture coupled transfer; Double cylinder coordinates
- Conference
- World Geothermal Congress
- Year
- 2010
- Session
- 29. Geothermal Heat Pumps
- Language
- English
- Paper number
- 2907
Full text
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Abstract
Based on the heat and mass transfer theory in soil, an unsteady three-dimensional coupled heat and moisture transfer model for the U-vertical underground heat exchanger (UHE) in soil was set up in double cylinder coordinates. According to the model, analyses were presented about the influences of different soil properties, different operational modes, and different initial humidity on the temperature and moisture fields in soil around the UHE.
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