自然作用压力对分户循环热水供暖系统的影响

通过实际工况下分户循环系统自然作用压力的分析计算得出 :实际运行时的供水温度越高、供回水温差越大 ,越适合选用异程式系统 ;反之 ,越适合选用同程式系统。提出异程式系统可通过在设计时减小比摩阻的方法来减小垂直失调 ;同程式系统可通过适当增大上一层环路局部阻力的方法来减小垂直失调现象的建议

The effect of circulating force on individual circulating heating system

By analyzing the circulating force of individual circulating system under the circumstance of actual mode, the author concludes that the higher the temperature of supply water is and the bigger the temperature difference between the supply water and the return water is, the more suitable it is for direct return hot water heating system to be used; otherwise, it is more suitable for reversed return hot water heating system to be used. Direct return hot water heating system can reduce vertical thermal disorder by reducing specific frictional resistance during design; whereas reversed return hot water heating system can reduce vertical thermal disorder by adding the partial resistance of the upper circulation.