摘要
由于传统的算术平均温差在换热器的近似计算中相对误差较大,导致根据它得到的供热系统调节参数不仅精度差,而且需要修正。本文将几何平均温差引入热网的集中调节公式进行计算,详细讨论了一、二级网联合调节的各种方案中计算参数的合理性和相对误差,指出了几何平均温差在计算中的优势。
Because the approximation errors using the arithmetic mean temperature in the computation of heat exchanger are great, the regulated parameters of district heating systems need to be corrected. Then the geometric mean temperature is applied in the regulating computation as a substitute for the logarithmic mean temperature. The rationality and the relative errors of the regulated parameters in various regulating methods from both the geometric mean temperature and the arithmetic mean temperature are discussed in detail. The advantage of the application of the geometric mean temperature is pointed out obviously.
出处
《低温建筑技术》
2006年第4期120-122,共3页
Low Temperature Architecture Technology
关键词
几何平均温差
集中调节
供热系统
geometric mean temperature
regulation
district heating system
