Points out problems in setting expansion joints for supply and return water risers.

摘要指出了在供回水立管中间设置伸缩节存在的问题.

To obtain more uniform distribution of temperature and heat flux could raises supply water temperature or reduces temperature difference between supply and return water;

为了得到更均匀的温度及热流密度分布，应适当提高供水温度或降低供回水温差；

The paper also introduces several configurations of domestic condensate return water system and its make-up system, and their retrofitting schemes and results after retrofitting.

文章还介绍了国内当前凝结水回水系统及其补水系统的配置，及其对这些系统的改造方案和改造后的效果。