四种不同火电厂主汽轮机的分析与比较

IF 0.5 Q4 TRANSPORTATION
V. Mrzljak, Maro Jelić, I. Poljak, J. Prpić-Oršić
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引用次数: 0

摘要

本文对四种不同发电厂(船用、常规、超超临界和核电站)的四台汽轮机及其汽缸进行了分析和比较。主要目标是找出哪台汽轮机及其汽缸表现出最佳性能、最高效率、最低的比蒸汽消耗量,以及哪台汽轮机受环境温度变化的影响最小。超超临界发电厂的汽轮机及其汽缸的等熵和火用效率最高(超超临界电厂的整个汽轮机的等熵效率为88.36%,火用效率为91.05%),该涡轮机具有最低的比蒸汽消耗(7.32kg/kWh),并且该涡轮机的火用参数受环境温度变化的影响最小。最差的性能(最低的效率、高比蒸汽消耗和对环境温度变化的最高灵敏度)显示了船用推进发电厂的汽缸和整个涡轮机。对上述四个电厂的其他几台汽轮机也进行了同样的分析和比较,因此所提出的关系式和主要结论具有普遍的有效性。可以得出的结论是,与任何其他发电厂的蒸汽轮机相比,超超临界发电厂的汽轮机表现出最好的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis and Comparison of Main Steam Turbines from Four Different Thermal Power Plants
This paper presents an analysis and comparison of four steam turbines and their cylinders from four different power plants (marine, conventional, ultra-supercritical and nuclear power plants). The main goal was to find which steam turbine and their cylinders show the best performances, the highest efficiencies, the lowest specific steam consumption and which turbine is the lowest influenced by the ambient temperature change. The highest efficiencies, both isentropic and exergy, are observed in the steam turbine and their cylinders from the ultra-supercritical power plant (whole turbine from ultra-supercritical power plant has an isentropic efficiency equal to 88.36% and exergy efficiency equal to 91.05%). Also, this turbine has the lowest specific steam consumption (7.32 kg/kWh) and exergy parameters of this turbine are the lowest influenced by the ambient temperature change. The worst performance (the lowest efficiencies, high specific steam consumption and the highest sensitivity to the ambient temperature change) show the cylinders and whole turbine from marine propulsion power plant. The same analysis and comparison are also performed for several other steam turbines from four mentioned power plants, so the presented relations and dominant conclusions have general validity. It can be concluded that steam turbines in ultra-supercritical power plants show the best performances in comparison to steam turbines from any other power plant.
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来源期刊
CiteScore
1.50
自引率
0.00%
发文量
19
审稿时长
8 weeks
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