摘要
对于已设计投运的低压省煤器系统(LPES),存在一个使整个回热加热系统达到最高经济性的LPES通水流量。本文以某电厂137MW发电机组LPES为典型,全面分析了LPES系统的变流量特性,导出系统参数及等效焓降变化的计算关系式,并进而建立了确定LPES最佳流量的数学模型。经试验验证,本模型可用于指导低压省煤器的最优运行。
For a low pressure economizer system (LPES) which has been in operation, there exists a optimum flow that will make the thermal unit operate under the highest efficiency. This paper, by taking a 137MW thermal unit LPES as example, analyzed the flow characteristic for a LPES, derived the formulas for the calculation of parameters and equivalent enthalpy drop deviation. Further, a mathematical model for determining the optimum flow is established. Special test on the LPES shows that the model is useful to guide the optimized operation of LPES.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2003年第5期526-531,共6页
Chinese Journal of Hydrodynamics
