热水供热系统备用水平的确定

Determination of the stand by margin for hot water heating systems

给出了限额供热系数、室内空气温度、限额供热时间之间的关系式，指出供热系统故障修复时间Ｚｘｆ不大于用户允许限额供热时间Ｚｙｘ应作为确定系统备用水平的一个基本准则，通过对有备用供热系统限额供热工况的分析，给出了限额流量系数的取值范围。认为所给出的方法可用于正确确定供热系统的备用水平。

Provides a relationship between the limit heating coefficient, indoor air temperature and the limit heating time, considers that a system failure recovery time not longer than that of limit heating permitted by the users should be taken as a basic criterion whereby to determine the stand by margin of the heating system, recommends a value range of the limit flowrate coefficient for reference based on an operation condition analysis of a system with stand by capacity. And believes the method given hereof to be correct in the determination.