• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nae more, journal of marine sciences >Exergy Analysis of Steam Pressure Reduction Valve in Marine Propulsion Plant on Conventional LNG Carrier
【24h】

Exergy Analysis of Steam Pressure Reduction Valve in Marine Propulsion Plant on Conventional LNG Carrier

机译：常规LNG船用船舶推进装置蒸汽减压阀的火用分析。

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Paper has presented an exergy analysis of steam pressure reduction valve, unavoidable element in the steam propulsion plant on LNG carrier. The steam pressure reduction valve was analyzed in a wide range of steam system loads. Along with pressure decrease, through the valve also occur decrease in steam temperature and increase in steam specific entropy. The pressure decrease of the analyzed valve ranges from 4.846 MPa up to 5.027 MPa while the average steam temperature decrease for the whole observed operating range amounts 74.8 °C. At the ambient temperature of 25 °C, valve exergy destruction ranges from 121.72 kW up to 180.64 kW, while exergy efficiency amounts from 80.28 % up to 80.54 %. Variation in the ambient temperature, for the expected engine room temperature range, showed that the exergy destruction of pressure reduction valve increases and exergy efficiency decreases during the increase in the ambient temperature. The lowest average value of pressure reduction valve exergy destruction was obtained at the ambient temperature of 10 °C and amounts 152.03 kW, while at the same ambient temperature was obtained the highest average exergy efficiency of 82.77 %. The highest valve exergy destruction and the lowest exergy efficiency were obtained at the highest observed ambient temperature of 40 °C.
机译：论文介绍了蒸汽减压阀的火用分析，这是液化天然气运输船上蒸汽推进装置中不可避免的要素。在广泛的蒸汽系统负载中分析了蒸汽减压阀。随着压力的降低，通过阀门还发生蒸汽温度降低和蒸汽比熵升高。分析阀的压力下降范围为4.846 MPa至5.027 MPa，而整个观察到的工作范围内的平均蒸汽温度下降为74.8°C。在25°C的环境温度下，阀的火用能级破坏范围为121.72 kW至180.64 kW，而火用效率为80.28％至80.54％。对于预期的发动机室温度范围，环境温度的变化表明，在环境温度升高期间，减压阀的火用破坏增加，火用效率降低。在10°C的环境温度下获得最低的减压阀火用破坏平均值，为152.03 kW，而在相同的环境温度下，最高平均火用效率为82.77％。在最高的观察到的环境温度40°C下，获得了最高的阀门火用能级破坏和最低的火用效率。

著录项

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