江水源热泵系统温排水的温度场数值模拟  

Temperature field distribution of thermal discharge for a river-source heat pump system

作　　者：卿晓霞[1] 王兆兴[1,2] 周健[1] 于玲玲[1,3] 张景尧[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]中冶京诚工程技术有限公司,北京100176 [3]林同棪国际工程咨询(中国)有限公司轨道事业部,重庆401121

出　　处：《兰州大学学报（自然科学版）》2016年第5期703-707,共5页Journal of Lanzhou University(Natural Sciences)

基　　金：国家"十一.五"科技支撑计划项目(2007BAB21B03-1)

摘　　要：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 investigate the temperature distribution of thermal discharge for a river-water source heat pump system, the finite volume element method of fluent software was used to numerically simulate the ther- mal diffusion in the river physical model. It was shown that the influence range of thermal discharge on water temperature was of upper water 〉 middle water 〉 bottom water in terms of surface-type discharge. With the fiv- er-water source heat pump system running for a week, the temperature would rise by I℃ sphere of influence, and the area was 10 m x 3.3 m in the upper water, 6 m x 2.5 m in the middle and 2 m x 1.4 m in the lower. As a result of the temperature variation trend, the temperature rose apparently in the discharge outlet. And from the discharge outlet to downstream in different directions, the increasing range of river water temperatm＇e would decrease gradually, with the trend gradually being slowed down. The absolutely relative errors between the actual and simulated temperature were all less than 2.33%, thus suggesting a high accuracy.

关 键 词：温度场 温排水 江水源热泵 

分 类 号：TU833.1[建筑科学—供热、供燃气、通风及空调工程]