为研究江水源热泵系统温排水在江河水域中的温度扩散规律,以长江位于重庆市的某段河道构建物理模型,采用有限体积元法对江水源热泵系统温排水的温度扩散规律进行三维数值模拟.结果表明,对于表面排放方式,温排水对江河水体温度的影响范围为:上层水体>中层水体>下层水体,江水源热泵系统运行7 d后,受纳水域上、中、下层水体温升大于1℃的范围(长×宽)分别是10 m×3.3 m、6 m×2.5 m和2 m×1.4 m.温排水进入河道后温度变化规律的模拟结果表明,排放口处温升值最明显,从排放口开始沿江水水流方向、河道宽度和深度方向,温度影响趋势均逐渐减弱.对江水温度模拟值与实测值的误差分析表明,两者相对误差的绝对值在2.33%以内,准确性较好. In order to study the temperature diffusion of temperature-controlled water system of river-source heat pump system in river waters, a physical model of the Yangtze River located in a section of the river in Chongqing was established. The finite volume element method was used to conduct three-dimensional numerical simulation of temperature spread of temperature- The results show that for the surface discharge mode, the influence of warm drainage on the temperature of river water body is as follows: upper water body> middle water body> lower water body. After 7 days of river water source heat pump system operation, the temperature rise of upper, middle and lower water bodies in receiving area is greater than The range of 1 ℃ (length × width) is 10 m × 3.3 m, 6 m × 2.5 m and 2 m × 1.4 m, respectively. The simulation results of the temperature variation after entering the river show that the temperature rise value at the discharge port is the most obvious, The trend of influence of temperature on the width and depth of the riverway gradually decreases from the outlet to the river flow direction, and the error analysis on the simulated and measured river water temperature shows that the absolute value of the relative error between the two is within 2.33%, the accuracy is it is good.