基于1D/3D协同仿真流量与温差调控模式影响分析  

Impact analysis of flow and temperature regulation pattern based on 1D/3D collaborative simulation

作　　者：张淑秘[1] ZHANG Shu-mi(School of Municipal and Environmental Engineering, Jilin Jianzhu University, Changchun 130118, China)

机构地区：[1]吉林建筑大学市政与环境工程学院

出　　处：《热科学与技术》2018年第3期198-203,共6页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(51376080)

摘　　要：针对地下水源能量利用系统建筑负荷的动态变化,基于1D/3D集成分析数值方法的基础上,分析了定流量变温差及定温差变流量两时变模式系统性能参数的变化。结果表明：定温差变流量调控模式由于抽水量小于定流量变温差模式,含水层发生热贯通时间较晚;发生热贯通后,由于抽水温差大于定流量变温差模式,冷水封面向抽水井移动速度较快,抽水温度下降幅度较大,热贯通程度显著。抽灌水流量对热贯通起主导作用,热贯通发生后抽灌水温差对地下水温度影响较大;定温差变流量模式机组的COP值迅速下降,运行过程中耗功较少,系统能效比较大。Given the buildingloading dynamic change of the underground water energy utilization system,based on one-dimensional and three-dimensional integrated numerical analysis method,the changes of the system performance parameters areanalyzed with the constant flow by the variable temperature difference and the constant temperature difference by the variable flow modes.The results have shown that the aquifersheat transfixion time is late when using regulation mode of fixed temperature gap and variable flux because the pumping amount is less than that ofthe fixed flow temperature difference mode;after thermal breakthrough,the cold water cover moves to the pumping wells more quicklybecause the water temperature difference is greater than the fixed flow temperature difference mode,also the pumping temperature decreases rapidly,and the heat transfixion degree is conspicuous;It can be seen that the pumping water flow plays a leading role in the heat heat transfixion,and the temperature difference of the pumping water has a great effect on the groundwater temperature after the heat heat transfixion.The unit COPvalue of the fixed-temperature difference andvariable flow mode is rapidly decreasing,in the process of running the power consumption is less,the system energy efficiency ratio is larger.

关 键 词：1D/3D 定温差 定流量 调控模式 分析 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]