摘要
通过对竖直埋地热力管道非稳态传热机理的详尽分析表明，用线热源解计算大地热阻这一目前广为应用的方法，由于与实际情况相差较远，会产生较大的误差。据此，针对竖直埋地热力管道传热过程的特点，采用更为接近实际情况的模型，对其非稳态导热进行了分析计算，并给出了一个新的大地热阻计算公式。
Based on the detailed computation and analysis of the unsteady heat transfer of a vertically buried pipeline, a new correlation is proposed for calculation its earch thermal resistance. Compared with those widelyused lineheatingsourcesolution based correlation, the presented one is more accurate since it is developed from a more practical model. The propoded correlation is also more simple, more reliable and hence more convenient for engineering applications.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
1997年第1期41-46,共6页
Journal of North China Electric Power University：Natural Science Edition
关键词
埋地管道
非稳态传热
热阻
计算
热力系统
buried pipelines
unsteady heat transfer
earth thermal resistance calculation
