摘要
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 that flow increment is much smaller while the water pumps of ground-source heat pump（GSHP）system are parallel connected than the condition of a single pump,the pipeline impedance is calculated using the measured data,and the fitting characteristic curve of pipeline and the performance curve of water pump are obtained.The results show that flat performance curve of water pump and the large pipeline impedance are the main reasons of the poor parallel connection performance of water pump,and the clogging of the buried pipe is another important reason for the large pipeline impedance.
出处
《制冷与空调》
2017年第8期48-51,共4页
Refrigeration and Air-Conditioning
关键词
地源热泵系统
水泵性能曲线
管路特性曲线
管路阻抗
地埋管
堵塞
ground-source heat pump（GSHP）system
performance curve of water pump
characteristic curve of pipeline
pipeline impedance
buried pipe
block
