摘要
热电厂蒸汽管网普遍存在管道阻力件引起的能量损失。为了准确计算蒸汽流经阻力件产生的可用能损耗,提出了蒸汽管网系统能量计量的新观点,即通过IAPWSIF97的蒸汽状态方程,推导出阻力发生过程的熵方程,得到可用能损失计算模型。校验分析结果表明,用该模型计算蒸汽流经阻力件的能量损失,较传统方法方便、准确。
The energy dissipation resulted from restrictive device in pipelines is commonly existing in the steam piping network of a thermal power plant. In order to accurately calculate the available energy dissipation resulted from the steam flowing through a restrictive device, a new view point for measuring energy in steam piping network system has been put forward, i.e. a model for computing the available energy dissipation has been obtained through entropy equation in occurrence process of the resistance, which is deduced from steam condition equation of IAPWS-IF 97. The result of checking analysis shows that the model can be used for calculating the energy dissipation while steam passing through a restrictive device. being more convenient and accurate than using traditional method.
出处
《热力发电》
CAS
北大核心
2006年第8期25-27,共3页
Thermal Power Generation
基金
浙江省自然科学基金资助项目(M603123)
关键词
热电厂
蒸汽管网
可用能损耗
熵方程
管内阻力件
蒸汽状态方程
thermal power plant
steam piping network
available energy dissipation
computing model
entropy equation
restrictive device in pipeline
steam condition equation