江水源热泵系统尾水排放口技术研究

为考察江水源热泵系统尾水排放口布置形式、数量和多口排放时排放口间距对水环境的影响,采用Fluent软件的有限体积元法,针对长江重庆段某河道和江水源热泵系统实际工程,对江水源热泵系统温排水在江河水体中的温度扩散规律进行了模拟研究.结果表明:就对水环境的影响而言,排放口垂直布置方式优于水平布置方式,多口排放优于单口排放;多口排放时,排放口间距越大,对水环境的影响越小,但综合考虑工程量及施工难度等因素,较优的排放口数量为双口或三口;双口排放时,较佳的排放口间距为30—40m.

Tail Water Discharge Port Technology of River-water Source Heat Pump System

To investigate the influence of arrangement, quantity and distance of tail water discharge port in river-water source heat pump system on water environment and engineering quantity as discharged by multi-port way, the finite volume element method of fluent was used to simulate the thermal diffusion characteristics in the river in terms of one section of Yangtze River in Chongqing and a practical engineering of river-water source heat pump system. The results show that vertical arrangement is superior to horizontal arrangement and multi-port way is better than single-port way for thermal discharge. As the number of discharge ports increases, the influence of thermal discharge on water environment decreases. However, the optimal number of discharge ports is two or three if engineering quantity and construction difficulty are considered comprehensively; the appropriate discharge port distance is 30 -40 m as double- port way is adopted.