抽蓄电站地下厂房全厂温湿度分布规律的数值计算研究
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摘要
抽蓄电站地下厂房温湿度环境复杂,不同洞室参数相关性大,测量需要消耗大量人力物力。建立了抽水蓄能电站地下主厂房的全厂CFD数值计算模型,同时将现场对应的层间通风口测试数据作为模型的边界条件,对层间通风管道以及轴流风机进行简化,计算不同季节工况下全厂温湿度分布。计算结果与现场试验数据进行对比,验证模型的可靠性。针对水轮机层进风湿度过高的问题,提出在进风口进行冷却除湿的方案,基于建立的模型进行计算分析,论证了方案的可行性。
Because the temperature and humidity environment in the underground powerhouse of pumped-storage power station is complicated, different cavern parameters have high correlation and the measurement of temperature and humidity requires a lot of manpower and material resources, a CFD model for the simulation of temperature and humidity fields in whole powerhouse is established. In this model, the corresponding interlayer ventilation test data is taken as the boundary conditions to simplify the ventilation pipes and axial fans. The temperature and humidity distributions in different seasons are calculated, and compared with monitoring data to validate the model. An optimized scheme is proposed to solve the problem of high humidity in turbine floor and the CFD calculation is carried out to verify its feasibility.
Because the temperature and humidity environment in the underground powerhouse of pumped-storage power station is complicated, different cavern parameters have high correlation and the measurement of temperature and humidity requires a lot of manpower and material resources, a CFD model for the simulation of temperature and humidity fields in whole powerhouse is established. In this model, the corresponding interlayer ventilation test data is taken as the boundary conditions to simplify the ventilation pipes and axial fans. The temperature and humidity distributions in different seasons are calculated, and compared with monitoring data to validate the model. An optimized scheme is proposed to solve the problem of high humidity in turbine floor and the CFD calculation is carried out to verify its feasibility.
引文
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[12]中国顾问集团华东勘测设计研究院.华东某抽水蓄能电站通风空调系统设计专题报告[R].杭州:中国顾问集团华东勘测设计研究院,2003.
[13]江乐新,钟杰.多功能热泵空调与热水负荷调节的理论分析与试验研究[J].制冷学报,2011,32(4):39-42.
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[15]孙贺江,冯连元,何卫兵,张杰,龙正伟.飞机后设备舱自然对流换热的实验与模拟[J].天津大学学报:自然科学与工程技术版,2016,49(8):863-868.
[2]杨述仁,周文铎.地下水电站厂房设计[M].北京:水利电力出版社,1991.
[3]刘琳.白鹤滩水电站地下厂房进风网络计算及风机匹配[D].重庆:重庆大学,2015.
[4] TUVE G L. Air velocities in ventilating jets[J]. ASHVE Transac-tions,1959(2):261-282.
[5]何喆.琅琊山水电站地下厂房发电机层通风模型试验与研究[D].重庆:重庆大学,2005.
[6] NIELSEN P V, RESTIVO A, WHITELAW J H. Buoyancy-affectedflows in ventilated rooms[J]. Numerical Heat Transfer Applications,1979(1):115-127.
[7]董蕾.厄瓜多尔CCS水电站发电机层气流组织及特殊运行工况模拟[D].西安:西安建筑科技大学,2014.
[8]孙斌.大跨屋盖建筑开孔风致平均内压的数值模拟研究[D].杭州:浙江大学,2006.
[9]陈谭.长直尾水洞内热质交换的数值模拟初探[D].西安:西安建筑科技大学,2005.
[10]张淑佳,李贤华,朱保林,胡清波. k-ε涡粘湍流模型用于离心泵数值模拟的适用性[J].机械工程学报,2009(4):238-242.
[11] CRAFT T J, IACOVIDES H, MOSTAFA N A. Modelling of three-dimensional jet array impingement and heat transfer on a concave sur-face[J]. International Journal of Heat and Fluid Flow,2008,29(3):687-702.
[12]中国顾问集团华东勘测设计研究院.华东某抽水蓄能电站通风空调系统设计专题报告[R].杭州:中国顾问集团华东勘测设计研究院,2003.
[13]江乐新,钟杰.多功能热泵空调与热水负荷调节的理论分析与试验研究[J].制冷学报,2011,32(4):39-42.
[14] MURAKAMI S, KATO S, KIM T. Indoor climate design based onCFD coupled simulation of convection, radiation, and HVAC controlfor attaining a given PMV value[J]. Building and Environment,2001,36(6):701-709.
[15]孙贺江,冯连元,何卫兵,张杰,龙正伟.飞机后设备舱自然对流换热的实验与模拟[J].天津大学学报:自然科学与工程技术版,2016,49(8):863-868.