Modeling and simulation of heat and moisture transfer of the geothermal borehole

Author

Quanwen Jiao ; Yating Zhang

Author_Institution

Coll. of Electron. Inf. & Control Eng., Beijing Univ. of Technol., Beijing, China

fYear

2014

fDate

May 31 2014-June 2 2014

Firstpage

3347

Lastpage

3351

Abstract

According to the mass conservation and energy conservation theorem, established a finite length cylindrical surface heat and moisture transfer model which base on the cylindrical heat transfer model of vertical ground source heat exchanger for soil layer around geothermal borehole. Using COMSOL multi-physics coupling analysis software, simulated the non-steady-state heat and moisture transfer for soil layers of heat exchanger under summer operating conditions, and analyzed the influence in temperature field and moisture field of soil layers exerted by the heat and moisture transfer under different soil thermal properties and initial moisture contents. At last there is verification by FLUENT software.

Keywords

geotechnical engineering; heat exchangers; heat transfer; mechanical engineering computing; soil; COMSOL multiphysics coupling analysis software; FLUENT software; energy conservation theorem; finite length cylindrical surface heat transfer model; geothermal borehole; mass conservation theorem; moisture transfer model; soil initial moisture contents; soil layer; soil thermal properties; summer operating conditions; vertical ground source heat exchanger; Heat transfer; Heating; Land surface temperature; Mathematical model; Moisture; Soil; Coupling Analysis; Cylindrical Surface; Ground Source Heat Exchanger; Heat and Moisture Transfer;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (2014 CCDC), The 26th Chinese

Conference_Location

Changsha

Print_ISBN

978-1-4799-3707-3

Type

conf

DOI

10.1109/CCDC.2014.6852753

Filename

6852753