考虑凝结水的蒸汽管网稳态水力热力耦合分析  

Steady state hydrothermal coupling analysis of steam pipeline networks considering condensation

作　　者：丛博睿 张翼鹏 王馥尧 齐智猛 范巍 章雨然 CONG Borui;ZHANG Yipeng;WANG Fuyao;QI Zhimeng;FAN Wei;ZHANG Yuran(Tianjin Cheng'an Thermal Power Co.,Ltd,Tianjin 300202,China;School of Environmental Science and Engineering,Tianjin University,Tianjin 300350,China)

机构地区：[1]天津市城安热电有限公司,天津300202 [2]天津大学环境科学与工程学院,天津300350

出　　处：《区域供热》2023年第5期36-45,共10页District Heating

摘　　要：为了指导蒸汽管网的设计与高效运行,提高热能利用效率,助力节能减排,建立了考虑凝结水的蒸汽管网稳态水力热力耦合计算模型,通过SIMPLE算法实现了模型求解,并基于天津某蒸汽管网实测数据验证了模型的准确性。对蒸汽管网中产生凝结的影响因素及凝结水对蒸汽管网特性的影响进行了分析。结果表明:相较于摩阻系数,蒸汽管网的热损系数对凝结水的产生具有更显著的影响;是否考虑凝结水,对蒸汽管道水力特性计算结果的影响很小,但对其热力特性计算结果的影响较大,忽略凝结水导致管道内蒸汽温度最大计算误差为16.2℃。In order to guide the design and efficient operation of steam pipeline networks,improve thermal energy utilization efficiency,and assist in energy conservation and emission reduction,this study establishes a steady-state hydraulic thermal coupling calculation model for steam pipeline networks considering condensate.The model is solved using the SIMPLE algorithm,and the accuracy of the model is verified based on measured data from a steam pipeline network in Tianjin.An analysis is conducted on the influencing factors of condensation in the steam pipeline network and the impact of condensed water on the characteristics of the steam pipeline network.The results show that compared to the friction coefficient,the heat loss coefficient of the steam pipeline network has a more significant impact on the generation of condensate.Whether to consider the impact of condensate on the hydraulic characteristics calculation results of steam pipelines is minimal,but it has a significant impact on the thermal characteristics calculation results.Ignoring condensate results in a maximum calculation error of 16.2℃for the steam temperature inside the pipeline.

关 键 词：蒸汽管网 耦合仿真 凝结水 管道摩阻系数 管道热损系数 

分 类 号：TU995.3[建筑科学—供热、供燃气、通风及空调工程]