• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Experimental study of steam-air condensation over a vertically longitudinal finned tube
【24h】

Experimental study of steam-air condensation over a vertically longitudinal finned tube

机译：垂直纵向翅片管上蒸汽-空气冷凝的实验研究

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

A set of condensation experiments in the pure steam and steam-air conditions have been conducted to evaluate the heat removal capacity of a vertically longitudinal finned tube in natural convection situation. The bulk temperature, wall temperature and temperature near the tube wall were measured in detail. The result of the temperature measurement demonstrated that there was an air rich region near the longitudinal finned tube while gas stratification phenomenon was not found in the mainstream. Condensation heat transfer coefficient and heat transfer rate have been obtained for air mass fraction ranging from 0.07 to 0.95, total pressure ranging from 0.2 MPa to 0.7 MPa. A smooth tube was also tested under the same condition as a reference. At pure steam case, the longitudinal finned tube played a positive effect on the condensation heat transfer, showing a growth of the condensation heat transfer coefficient by a factor of 3.86-4.89. At the steam-air case, the longitudinal finned tube generated restrictions on the condensation heat transfer process when air mass fraction was below 75%. However, the longitudinal finned tube enhanced the heat transfer process for the air mass fraction in excess of 75%.
机译：已经进行了一系列在纯蒸汽和蒸汽空气条件下的冷凝实验，以评估自然对流情况下垂直纵向翅片管的散热能力。详细测量整体温度，壁温和管壁附近的温度。温度测量结果表明，在纵向翅片管附近有一个富气区域，而主流没有发现气体分层现象。对于0.07至0.95的空气质量分数，0.2MPa至0.7MPa的总压力，已经获得了冷凝传热系数和传热速率。还在与参考相同的条件下测试了光滑管。在纯蒸汽情况下，纵向翅片管对冷凝传热产生积极影响，显示冷凝传热系数增长了3.86-4.89倍。在蒸汽-空气情况下，当空气质量分数低于75％时，纵向翅片管会限制冷凝传热过程。然而，纵向翅片管增强了空气质量分数超过75％的传热过程。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2015年第10期|1230-1238|共9页
  • 作者

    Pan Tong; Guangming Fan; Zhongning Sun; Ming Ding;

  • 作者单位

    National Defense Key Subject Laboratory for Nuclear Safety and Simulation Technology, Harbin Engineering University, No. 145 Nantong Street, Harbin 150001, China;

    National Defense Key Subject Laboratory for Nuclear Safety and Simulation Technology, Harbin Engineering University, No. 145 Nantong Street, Harbin 150001, China;

    National Defense Key Subject Laboratory for Nuclear Safety and Simulation Technology, Harbin Engineering University, No. 145 Nantong Street, Harbin 150001, China;

    National Defense Key Subject Laboratory for Nuclear Safety and Simulation Technology, Harbin Engineering University, No. 145 Nantong Street, Harbin 150001, 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

    Longitudinal finned tube; Condensation; Steam-air; Noncondensable gas;

    机译：纵向翅片管;缩合;蒸汽空气不可凝气体;

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