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.
作者
焦宏照
Jiao Hongzhao(Zhengzhou university multi-functional design and research academyCo.,Ltd,Zhengzhou,450002)
出处
《制冷与空调（四川）》
2019年第5期486-493,496,共9页
Refrigeration and Air Conditioning
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
Security supply
Parallel connection
Pipeline characteristic curve
Radiator heating
Low temperature floor radiant heating
Affluent coefficient
Failure satisfaction rate.
