地面采暖混水泵小流量大温差运行特性与节能性分析  

Operation Characteristics and Energy Conservation Analysis for Floor Heating Mixing Pump With Small Flow and Large Temperature Difference

作　　者：任庚坡[1] 

机构地区：[1]上海市节能监察中心

出　　处：《上海节能》2010年第5期23-27,共5页Shanghai Energy Saving

摘　　要：当地面采暖与散热器采暖水系统共用热源时,混水泵混水法在许多场合具有实用价值,我国的设计规范把地面采暖的供回水温差定为10℃,混水泵的耗电量大。采用数值分析等方法,从室内温度场、管内流速及地板材料等多方面讨论了混水系统小流量大温差运行的可行性,降低水泵的耗电量。研究结果表明,将供回水温差由10℃提高为20℃时,对室内温度场、管网稳定性、地板材料等方面基本没有影响,但节电效益可观。Water mingling system using mixing pump has practical value when floor heating system shares the heat source for radiator heating system. China＇s code for floor heating design fixes the water temperature difference between water supply and water return as 10 oC, which causes the big power consumption of mixing pump. The feasibility of improving the water temperature difference has been studied with numerical simulation from the points of indoor temperature field, water flow velocity and floor material to reduce the power consumption of mixing pump. The results show that the water temperature difference improving from 10 ℃ 20 ℃ has little influence on the indoor temperature field, the hydraulic stability of pipe network, the floor material, etc. However, the energy conservation benefit is considerable.

关 键 词：地面采暖 混水系统 混水泵 水力稳定性 

分 类 号：TU832[建筑科学—供热、供燃气、通风及空调工程]