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为了了解地源热泵系统地源侧水泵并联较单台水泵的流量增量过小的原因,利用现场测量数据计算管路阻抗,并拟合管路特性曲线与水泵性能曲线,发现水泵性能曲线平缓与管路阻抗较大是造成水泵并联效果差的主要原因,地埋管发生堵塞是造成管路阻抗偏大的重要原因。
In order to understand the reasons why the ground-source heat pump system ground-sourced pump parallel to a single pump is too small, the pipeline impedance is calculated by field measurement data and the pipeline characteristic curve and pump performance curve are fitted to find that the pump performance curve is gentle And the pipeline impedance is the main reason for the poor parallel effect of the pump. The blockage of the buried pipe is an important reason for the large impedance of the pipeline.