Use of MT3DMS for Heat Transport Simulation of Shallow Geothermal Systems
نویسندگان
چکیده
The multi-species transport model MT3DMS is applied to simulate heat transport in shallow confined aquifers. This is done by taking advantage of the mathematical similarities between the description of heat and solute transport. A comprehensive analysis on the applicability of MT3DMS (version 5.2) for heat transport simulation of closed shallow geothermal systems is shown. MT3DMS simulations are compared with results from heat analytical solutions and with those from the established numerical code FEFLOW. Issues regarding the definition of the boundary conditions, as well as the evaluation of the type of the numerical advection solver are investigated. The computed results are examined based on residual errors. The overall agreement of MT3DMS with the analytical solutions and FEFLOW is good. Larger discrepancies are only found close to the heat source, which is due to the inherent differences of the numerical methods used by each code and the boundary conditions required by the analytical solutions. Despite these differences we find that MT3DMS can be successfully applied to simulate heat transport in saturated and confined porous media under the influence of GSHP systems.
منابع مشابه
Use rights markets for shallow geothermal energy management
Due to the growth in demand for shallow geothermal energy, the development of an integrated management system to organize the exploitation of this resource is mandatory to protect both groundwater and the users’ rights. This paper proposes a methodology to establish a market of shallow geothermal energy use rights which will represent an advance in the management of this resource. The new conce...
متن کاملNumerical Simulation of the Freezing Process in Geothermal Boreholes Using Solar Heat Injection
Ground thermal energy as a clean and sustainable energy source has received significant attention lately. Several strategies and hybrid configurations have been proposed to harvest geothermal energy for air conditioning and industrial purposes. The possibility of moist soil freezing in the vicinity of borehole tubes is known to be the source of several benefits and difficulties. The high storag...
متن کاملSimulation and prediction of conditions for effective development of shallow geothermal energy
A geothermal heat exchanger system is mathematically quantified, and simulated and modeled to understand heat transfixion and strata deformation caused by groundwater exploitation via groundwater heat pump systems. This is done to determine the requirements and parameters governing the development of shallow geothermal energy in an efficient and safe manner. The model takes into account the gro...
متن کاملImpact of Boundary Conditions on a Groundwater Heat Pump System Design in a Shallow and Thin Aquifer near the River
The exploitation of shallow geothermal energy through a groundwater heat pump (GWHP) is always limited to thick and deep aquifers containing abundant water with a relatively stable temperature. Unfortunately, aquifers in hilly regions which occupy two thirds of China are usually thin and shallow. The boundary conditions in those hilly areas affect the groundwater flow that is used for geotherma...
متن کاملGeophysical Methods for Monitoring Temperature Changes in Shallow Low Enthalpy Geothermal Systems
Low enthalpy geothermal systems exploited with ground source heat pumps or groundwater heat pumps present many advantages within the context of sustainable energy use. Designing, monitoring and controlling such systems requires the measurement of spatially distributed temperature fields and the knowledge of the parameters governing groundwater flow (permeability and specific storage) and heat t...
متن کامل