...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy Conversion & Management >Economic comparison between sCO_2 power cycle and water-steam Rankine cycle for coal-fired power generation system
【24h】

Economic comparison between sCO_2 power cycle and water-steam Rankine cycle for coal-fired power generation system

机译：燃煤发电系统SCO_2电力循环与水蒸线循环的经济比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The supercritical carbon dioxide (sCO2) coal-fired power generation system has received great attention, but its economic characteristic is not well understood. Here, we present an economic comparison when using the sCO2 power cycle and the water-steam Rankine cycle. The triple-compression sCO2 cycle is adopted, incorporating overlap energy utilization over entire flue gas temperature range, intercooling and double reheating techniques. The heat-resistant steel materials of boiler are carefully selected to ensure its safe operation. The cost models of sCO2 boiler and recuperator are paid more attention. We show that the sCO2 power system attains the net power generation efficiency of 49.01%, which is higher than 48.12% for the advanced water-steam Rankine cycle system. Compared with water-steam system, the cost of sCO2 turbine decreases by 30.0%, but the cost of sCO2 recuperator seems to be one magnitude larger than that of USC heater, the cost of sCO2 boiler increase by 36.3%. Hence, the whole sCO2 power system increases the specific cost by 29.0%. Over an entire 30 years lifetime of the power plant, the levelized cost of electricity (LCOE) is 60.56 $/MWh for sCO2 power system, which decreases by 1.32% compared to water-steam system. Therefore, we declare that even though the fabrication cost increases, the sCO2 power system is preferable to the water-steam system. The specific cost of the sCO2 power system can be further decreased by optimization of the recuperator, which is a key component in the system.
机译：超临界二氧化碳（SCO2）燃煤发电系统得到了极大的关注，但其经济特点并不充分了解。在这里，我们在使用SCO2功率循环和水蒸腾兰峰循环时提供经济比较。采用三重压缩SCO2循环，在整个烟道气温度范围，中间冷却和双重再加热技术上结合重叠能量利用。仔细选择耐热钢材材料以确保其安全操作。 SCO2锅炉和恢复器的成本模型得到更多关注。我们表明SCO2电力系统达到49.01％的净发电效率，高级水蒸腾QUAN循环系统的净发电效率为49.01％，高于48.12％。与水蒸气系统相比，SCO2涡轮机的成本降低了30.0％，但SCO2恢复器的成本似乎比USC加热器的成本大，SCO2锅炉的成本增加了36.3％。因此，整个SCO2电力系统将特定成本增加29.0％。在整个30年的电厂寿命中，SCO2电力系统的电力（LCoE）的稳定成本为60.56美元，与水蒸气系统相比减少了1.32％。因此，我们声明即使制造成本增加，SCO2电力系统对于水蒸气系统而言是优选的。通过优化恢复器的优化，可以进一步降低SCO2电力系统的具体成本，这是系统中的关键部件。

著录项

  • 来源
    《Energy Conversion & Management》 |2021年第6期|114150.1-114150.13|共13页
  • 作者

    Xu Jinliang; Wang Xue; Sun Enhui; Li Mingjia;

  • 作者单位

    North China Elect Power Univ Minist Educ Key Lab Power Stn Energy Transfer Convers & Syst Beijing 102206 Peoples R China|North China Elect Power Univ Beijing Key Lab Multiphase Flow & Heat Transfer L Beijing 102206 Peoples R China;

    North China Elect Power Univ Beijing Key Lab Multiphase Flow & Heat Transfer L Beijing 102206 Peoples R China;

    North China Elect Power Univ Minist Educ Key Lab Power Stn Energy Transfer Convers & Syst Beijing 102206 Peoples R China|North China Elect Power Univ Beijing Key Lab Multiphase Flow & Heat Transfer L Beijing 102206 Peoples R China;

    Xi An Jiao Tong Univ Key Lab Thermofluid Sci & Engn Minist Educ Sch Energy & Power Engn Xian 710049 Shaanxi Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Supercritical carbon dioxide; Coal-fired power generation system; Boiler; Recuperator; Economic analysis;

    机译：超临界二氧化碳;燃煤发电系统;锅炉;恢复器;经济分析;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号