Effect of the ambient conditions on gas turbine combined cycle power plants with post-combustion CO2 capture
Effect of the ambient conditions on gas turbine combined cycle power plants with post-combustion CO2 capture
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DOI：
10.1016/j.energy.2017.05.020
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发表时间：
2017-09
期刊：
影响因子：
9
通讯作者：
A. González-Díaz;A. M. Alcaráz-Calderón;M. González-Díaz;Ángel Méndez-Aranda;M. Lucquiaud;J. M. González-Santaló
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文献类型：
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作者：
A. González-Díaz;A. M. Alcaráz-Calderón;M. González-Díaz;Ángel Méndez-Aranda;M. Lucquiaud;J. M. González-Santaló
本文评估了环境条件对具有CO2捕集的天然气联合循环电厂（NGCC）的影响，并提出了有效集成和非设计运行的设计方案。特别是，该研究评估了环境温度对墨西哥电力系统的影响，并建议在热回收蒸汽发生器中进行补充燃烧，以减轻功率输出的减少。对于环境温度从−5 °C变化到45 °C，这是墨西哥北部的典型温度变化，当温度从15 °C（ISO设计条件）增加到45 °C时，具有CO2捕获的NGCC的效率从50.95%降低到48.01%，并且当温度从15 °C降低到−5 °C时，从50.95%降低到50.78%。发电量从15 °C时的676.3 MW降至45 °C时的530 MW。为了补偿由环境温度的季节性变化引起的输出损失，热回收蒸汽发生器中的补充燃烧可以用于产生额外的功率，并在45 °C下将功率输出恢复到640 MW，代价是燃料成本增加，效率从50.95%下降到43.46%，分别没有和有补充燃烧。
This paper evaluates the effect of ambient conditions on a natural gas combined cycle power plant (NGCC) with CO2capture and proposes design options for effective integration and off-design operation. In particular, the study assesses the effect of ambient temperature in the context of the electricity system in Mexico and proposes supplementary firing in the heat recovery steam generator to mitigate reduction in power output. For ambient temperature varying from −5 °C to 45 °C, a typical temperature variation in the north of Mexico, the efficiency of the NGCC with CO2capture reduces from 50.95% to 48.01% when the temperature increased from 15 °C (ISO design condition) to 45 °C, and reduces from 50.95% to 50.78% when the temperature decreased from 15 °C to −5 °C. The power generated decreases from 676.3 MW at 15 °C to 530 MW at 45 °C. In order to compensate for the loss of output caused by seasonal changes in ambient temperature, supplementary firing in the heat recovery steam generator can be used to generate additional power and return the power output to 640 MW at 45 °C, at the expense of an increase in fuel costs and a drop in efficiency from 50.95% to 43.46%, without and with supplementary firing respectively.