摘要
该文从流动和传热特性着手，对锅炉低负荷下超温爆管原团进行分析，提出长期低负荷运行会导致爆管，因为与高负荷相比，低负荷时热负荷q虽然下降，但蒸汽侧a2大大下降，使q／a2的比值升高，导致管壁温度过高，发生爆管．
Starting from explaining fluid flow and heat transfer behaviors,the paper analyses the reason why boiler tubes get overheated and burst at low loads- The reason lies in the fact that,compared with high load conditions,though the heat load q is less at low load,but a2 on the steam side drops even more drastically,so that the ratio q/a2 increases,causing tube walltemperature to rise and finalize in a tube burst.
出处
《发电设备》
1997年第1期10-13,35,共4页
Power Equipment
