两台供暖水泵并联选型引发的思考  

Thoughts on Parallel Selection of two Heating Pumps

作　　者：焦宏照 Jiao Hongzhao(Zhengzhou university multi-functional design and research academyCo.,Ltd,Zhengzhou,450002)

机构地区：[1]郑州大学综合设计研究院有限公司

出　　处：《制冷与空调（四川）》2019年第5期486-493,496,共9页Refrigeration and Air Conditioning

摘　　要：在规范中,严寒和寒冷地区换热器选择时,有保障换热量的要求,但供暖水泵如何选取没有明确,首先进行理论分析,再通过分类实例选型,按照50%系统流量选取水泵,寒冷地区故障时满足率90%以上,严寒地区故障时满足率60%左右。建议选择水泵时,按照50%系统流量选取循环水泵,然后进行复核;当计算数据不足时,建议按照50%系统流量选取循环水泵,寒冷地区富裕系数取1.15~1.2,严寒地区富裕系数取1.2~1.3。In the codes,when choosing heat exchangers in cold and cold areas,there is a requirement to ensure heat transfer,but how to select heating pumps is not clear.This paper carries out theoretical analysis,and then chooses pumps according to 50%system flow through classified examples.The satisfaction rate is more than 90%in severe area and about 60%in cold area.It is suggested that the circulating pump should be selected according to the 50%system flow rate and checked.When the calculation data is insufficient,the circulating pump should be selected according to the 50%system flow rate,the coefficient of affluence in cold areas should be 1.15-1.2,and the coefficient of affluence in cold areas should be 1.2-1.3.

关 键 词：保障供热量 并联 管路特性曲线 散热器供暖 低温地板辐射供暖 富裕系数 故障时满足率 

分 类 号：TU832[建筑科学—供热、供燃气、通风及空调工程]