地源热泵竖直地埋管系统设计的简明算法模型研究

Concise algorithm for buried vertical pipe system design of ground-source heat pump systems

根据对流换热、导热理论和能量平衡方程,在借鉴IGSHPA模型方法的基础上,得出了地埋管换热系统设计的简明算法模型。模拟值与实测值的比较结果表明,误差在工程允许范围之内。根据该算法能够得出相同换热量的不同埋管设计方案,即不同的埋深、管间距、管内流速和埋管数量的组合情况,同时也能得出相应的流体进出口温度。

Based on heat convection and conduction theory, energy balance equations, and IGSHPA method, develops a concise algorithm model for the design of buried vertical pipe heat exchangers. The comparison between the calculation results by the algorithm and the stable measurement data in a summer in Dalian shows that the error can be neglected for engineering applications. Different design schemes can be obtained under given heat exchange amount by the algorithm, namely the combination of various buried pipe depths, horizontal spacing, fluid velocities inside the pipes and the number of buried pipes, at the same time the corresponding fluid temperatures flowing in and out of the buried pipes can be found.