| 超(超)临界锅炉大比热区的确定及安全运行措施 |
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| 引用本文： | 潘诚,徐立海.超(超)临界锅炉大比热区的确定及安全运行措施[J].锅炉技术,2011,42(4):5-7. |
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| 作者姓名： | 潘诚 徐立海 |
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| 作者单位： | 1. 河南省电力勘测设计院,河南,郑州,450007
2. 北京福泰克环保科技有限公司,北京,100101 |
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| 摘 要： | 超(超)临界机组中,水在拟临界温度处会出现比热容极大、水动力不稳定等问题,给机组的安全运行带来了一定的影响.基于水和水蒸气热力性质的科学标准IAPWS 95公式,计算了22.064～31 MPa压力下的拟临界温度,给出了大比热区定压比热容的变化趋势.并关联了拟临界温度与压力的关系式,计算精度高,平均相对偏差只有0.00...
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| 关 键 词： | 超临界机组 大比热区 拟临界温度 安全运行 |
Determination of large Specific Heat Region and the Safe Operation Measures for Supercritical Power Unit |
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| PAN Cheng,XU Li-hai.Determination of large Specific Heat Region and the Safe Operation Measures for Supercritical Power Unit[J].Boiler Technology,2011,42(4):5-7. |
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| Authors: | PAN Cheng XU Li-hai |
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| Affiliation: | PAN Cheng1,XU Li-hai21.Henan Electric Power Survey and Design Institute,Zhengzhou 450007,China,2.Beijing Fuel Tech Environmental Technologies Co.Ltd.,Beijing 100101 |
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| Abstract: | In supercritical power units,there will be emerging questions,for example anormal high heat capacity and hydraulic dynamic unstability,when water is at pseudocritical temperature.Therefore,it is very important to determine the pseudocritical temperature for power unit design and performance.Based on the IAPWS 95 formulas,the pseudocritical temperatures were calculated from 22.064 MPa to 31 MPa.Moreover,a simple calculating formula for the pseudocritical temperature was presented.The results show that the av... |
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| Keywords: | supercritical power unit large specific heat region pseudocritical temperature safe operation |
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