摘要
通过计算和比较表明,在锅炉动态模型中假定工质温度与金属温度同步变化所引起的误差往往是不容忽视的。文中讨论了这种模型误差过大的原因,并且提出了受热面金属的当量质量和当量系数的概念,还推导了具体计算公式。金属当量质量的引入,可以在很大程度上提高简化模型的精度。
Calculation and comparisons show that the error caused by the assumption of concurrent temperatures of working medium and heated surfaces in boiler dynamic models is not negligible. In this paper, the cause of excessive error is discussed, the concepts of equivalent coefficient and equivalent mass of heated surface are proffered, and a formula for calculating the equivalent coefficient is derived. By the introduction of equivalent mass into the heat balance, the precision of the simplified dynamic model is raised.
出处
《动力工程》
CSCD
1989年第4期29-32,共4页
Power Engineering
