基于THM耦合机理的地下水源热泵抽灌水井布置研究

发布时间：2018-04-21 16:05

本文选题：地下水源热泵 + THM耦合　；参考：《辽宁工程技术大学》2013年硕士论文

【摘要】：地下水源热泵空调系统由于采用新型清洁地下水资源近些年已在许多城市建筑中得到广泛的应用,但由于抽灌水井布置不合理,导致地下水源热泵在使用中出现了许多问题。论文运用渗流理论、热传递理论、有效应力原理,分析了地下水源热泵系统渗流场—热力场—应力场的耦合机理,建立了三场完全耦合数学模型。运用COMSOL Multi-physics耦合模拟软件对地下水源热泵系统中单井运行时渗流速度、抽水量、灌水量对三场耦合变化规律进行模拟分析。模拟结果表明渗流速度对温度场影响很大,对应力场影响不是很明显；抽灌水量的变化对温度场和应力场的影响都很明显。通过模拟了一抽一灌、两抽、两灌等三种模式不同水井间距三场耦合特征,获得了不同布置模式下合理的抽灌水间距范围。结果表明抽水灌水布置间距在70-80m是为较为理想的状态。论文通过对沈阳兴水大厦地下水源热泵抽灌水井布置实例进行模拟和理论结果进行对比,结果表明模拟数据和实际监测数据十分接近。该研究成果对于抽灌水井间距布置了提供科学支持。
[Abstract]:The air conditioning system of groundwater source heat pump (GSHP) has been widely used in many urban buildings in recent years due to the adoption of new clean groundwater resources. However, due to unreasonable arrangement of pumping irrigation wells, there are many problems in the application of GSHP. Based on seepage theory, heat transfer theory and effective stress principle, the coupling mechanism of seepage field, thermal field and stress field in groundwater source heat pump system is analyzed in this paper, and a fully coupled mathematical model of three fields is established. COMSOL Multi-physics coupled simulation software is used to simulate and analyze the seepage velocity, pumping rate and irrigation rate of single well in groundwater source heat pump system. The simulation results show that the influence of seepage velocity on the temperature field is very great, but the effect of the corresponding force field is not obvious, and the effect of the quantity of pumping and irrigation on the temperature field and the stress field is very obvious. By simulating the coupling characteristics of three different water well spacing, such as one pumping and one irrigation, two pumping and two irrigation, the reasonable range of pumping and irrigation spacing is obtained under different arrangement modes. The results show that the spacing of pumping irrigation arrangement is ideal at 70-80 m. In this paper, the simulation and theoretical results of pumping and irrigation well arrangement of groundwater source heat pump in Xinshui Tower of Shenyang are compared. The results show that the simulation data are very close to the actual monitoring data. The research results provide scientific support for spacing arrangement of pumping irrigation wells.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU83;P641.8

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