地源热泵系统地下水热量运移阶段特性模拟研究

Simulation study of the stage-characteristics of groundwater thermal transport in aquifer medium for GWHP System

摘要: 含水介质中地下水热量运移过程模拟是地源热泵系统这类新型浅层地温能利用工程科学论证的重要内容。通过建立饱和含水介质中热量运移对流-弥散数学模型,模拟了拟建地源热泵系统理想的对井抽-灌运行特定水流及热源条件下地下水热量运移过程。结果表明热泵系统完整运行周期(一年)内地下水热量运移过程具有显著的"阶段性"特征,"夏、冬抽-灌输运"和"春、秋停运蓄存"两阶段取决于不同的作用因素。从数学和概念模型两方面讨论了地下水流作用对热量输运过程的决定性影响,说明不同时期抽、灌井互换运行是解决拟定工作模式下热(冷)能浪费问题的理想途径。

Abstract: Simulation of groundwater thermal transport process in an aquifer is one of the most important problems for the project demonstration of GWHP(Groundwater Heat Pump) system.By building the convection-dispersion model which described the groundwater thermal transport in the aquifer,this paper simulated the groundwater thermal transport process of a GWHP system under special groundwater-flow and heat source conditions.The results show that the features of groundwater thermal transport in the whole ...