为了更加深入的研究水源热泵项目，介绍了某水源热泵项目概况及取退水方案，计算了夏季工况、冬季正常工况及冬季极端工况的取水量；建立了取退水部分三维模型图，采用CFX软件对3个工况下取退水对河流的影响进行了数值模拟，并分析了水源热泵项目的节能效果。研究结果表明：3个工况下退水水流均不会对河流A上游取水口周边温度场产生影响；河流B汇入河流A之前平均水温与河流A基础温度相比较，温升（降）低于1℃，退水不会对河流A产生影响；项目节能效果显著。通过研究水源热泵取退水对河流温度场的影响以及项目的节能效果，对水源热泵项目的设计与优化有一定参考作用。

In order to further study water source heat pump projects, we generally introduced a water source heat pump project and its water drawing and draining scheme, calculated the water intake in summer conditions, normal winter conditions, and extreme winter conditions, built a 3D diagram of the water drawing and draining part, used CFX to numerically simulate the effects of water drawing and draining on the river in the three conditions, and analyzed the energy conservation effect of water source heat pump. Results showed that in the 3 conditions, the draining streams have no effect on the temperature field around the upstream water inlet in River A. Compared with the basic temperature of River A, the average water temperature of River B before joining River A fluctuates by less than 1℃, meaning the water draining has no effect on River A. The energy conservation effect of the project is prominent. The study on the effect of water drawing and draining by water source heat pumps on the temperature field of rivers and the energy conservation effect of the project can provide reference for the design and optimization of water source heat pump projects.