• 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 >Effect of buoyancy and flow acceleration on heat transfer of supercritical CO_2 in natural circulation loop
【24h】

Effect of buoyancy and flow acceleration on heat transfer of supercritical CO_2 in natural circulation loop

机译：浮力和流速对自然循环中超临界CO_2传热的影响

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

In this paper, an experimental study was carried out to investigate the effect of buoyancy and flow acceleration on the heat transfer behavior of supercritical CO_2 in the heating section in a natural circulation loop. The experiments were performed for pressure from 7.45 to 10.19 MPa, mass flux from 235 to 480 kg/m~2/s, bulk fluid temperature from 21 to 205 ℃, and heat flux from 10.5 to 96 kW/m~2. Noticeable heat transfer deterioration was found in the test section and the heat transfer deterioration point gradually moved close to the inlet section with the increase of power. Results indicated that heat transfer characteristics of supercritical CO_2 in present experiments were affected by both buoyancy and flow acceleration. The flow acceleration effect was less pronounced than buoyancy. The point of heat transfer deterioration corresponded with the maximum value of buoyancy parameter (Bu), while no heat transfer deterioration was found when Bu was less than 2.0 × 10~(-5). By comparing with experimental data from literature, 94.3% of the new correlation predictions were within ±30% error range.
机译：本文通过实验研究浮力和流动加速度对自然循环回路加热段中超临界CO_2传热行为的影响。实验的压力为7.45至10.19 MPa，质量通量为235至480 kg / m〜2 / s，散装流体温度为21至205℃，热通量为10.5至96 kW / m〜2。在测试部分发现明显的传热恶化，并且随着功率的增加，传热恶化点逐渐靠近入口部分。结果表明，当前实验中超临界CO_2的传热特性受浮力和流动加速度的影响。流动加速效果没有​​浮力明显。传热劣化点与浮力参数（Bu）的最大值相对应，而当Bu小于2.0×10〜（-5）时，没有传热劣化。通过与文献中的实验数据进行比较，新的相关预测的94.3％在±30％的误差范围内。

著录项

  • 来源
  • 作者

    Guangxu Liu; Yanping Huang; Junfeng Wang; Fa Lv;

  • 作者单位

    CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, China;

    CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, China;

    CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, China;

    CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, 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 CO_2; Natural circulation; Heat transfer; Buoyancy; Flow acceleration;

    机译：超临界CO_2;自然循环;传播热量;浮力;流动加速;

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