用动态模拟方法设计U形地埋管换热器
Designing U-tube ground heat exchanger by dynamic simulation method
摘要：
给出了U形地埋管换热器的数值模型。利用实测数据对比验证了自主开发的模拟软件的准确性。在模拟建筑全年动态负荷的基础上，采用该模拟软件对某地源热泵工程地埋管换热器进行了30年的逐时模拟，确定了埋管方案。指出不能采用单位深度换热量设计地源热泵换热器，必须进行动态模拟。
关键词：地源热泵,U形地埋管换热器,数值模型,动态模拟
Abstract：
Presents a numerical model for designing U-tube ground heat exchanger. Validates the accuracy of a proprietary simulation software by comparing it with tested data. Based on the building annual dynamic load simulation, conducts a 30-year hourly simulation on ground heat exchanger of a project by using the software, and recommends a scheme of ground heat exchanger. Indicates that heat rate per meter in depth of borehole is insufficient for designing ground heat exchanger, and dynamic simulation is essential.
Keywords:ground-source heat pump, U-tube ground heat exchanger, numerical model, dynamic simulation