同程热水系统循环水流方向探讨  

Discussion on Direction of Circular Flow of Reversed Return Hot Water System

作　　者：王春燕[1] 赵颖[2] 

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 [2]重庆大学建筑设计研究院,重庆400030

出　　处：《重庆大学学报（自然科学版）》2008年第2期216-219,共4页Journal of Chongqing University

摘　　要：针对现行规范推荐采用的机械循环集中热水供应系统同程管网布置形式,根据水力学原理,提出输水和配水管段水流方向的判据,并图示分析两根、三根及多根立管组成的同程式机械循环集中热水供应系统在纯回水及小量配水工况下的循环水流方向。结果表明:同程热水系统回水管道的循环运行存在多种不同的水流方向;现行机械循环集中热水供应系统的水力计算以纯回水、单一水流方向作为计算的前提,不考虑小量出水工况,是不完善的。要保证每根立管均有循环流量按计算设定的水流方向通过,必须满足一定的水力条件。Aiming at the central mechanical circulated hot water supply system recommended by the current code, the criteria of water flow direction in the pipes of transport and distribution is brought forward based on the hydraulic principle, followed by the analysing with charts of flow directions in the reversed return hot water system consisting of two, three and several vertical pipes in the working conditions of simple return and a little water distributing. There are several directions of circular flow, the only working condition of simple return and single water flow direction which applied in current hydraulic calculation of reversed return hot water supply system is incomplete, certain hydraulic precondition is necessary to ensure circular flow flowing in each vertical pipe as the assumed direction in the course of hydraulic calculation.

关 键 词：同程热水系统 循环水流方向 纯回水 小量配水 

分 类 号：TU822[建筑科学]